iatt: changes across the codebase

- libglusterfs
  -- call-stub
  -- inode
  -- protocol
- libglusterfsclient
- cluster/replicate
- cluster/{dht,nufa,switch}
- cluster/unify
- cluster/HA
- cluster/map
- cluster/stripe
- debug/error-gen
- debug/trace
- debug/io-stats
- encryption/rot-13
- features/filter
- features/locks
- features/path-converter
- features/quota
- features/trash
- mount/fuse
- performance/io-threads
- performance/io-cache
- performance/quick-read
- performance/read-ahead
- performance/stat-prefetch
- performance/symlink-cache
- performance/write-behind
- protocol/client
- protocol/server
- storage-posix

Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 361 (GlusterFS 3.0 should work on Mac OS/X)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=361

32 files changed, 1015 insertions, 1028 deletions

diff --git a/xlators/cluster/afr/src/afr-dir-read.c b/xlators/cluster/afr/src/afr-dir-read.c
index 98cda1e80..065221e1d 100644
--- a/xlators/cluster/afr/src/afr-dir-read.c
+++ b/xlators/cluster/afr/src/afr-dir-read.c
@@ -153,7 +153,7 @@ out:
 
                                 sh->need_entry_self_heal  = _gf_true;
                                 sh->forced_merge          = _gf_true;
-                                sh->mode                  = local->fd->inode->st_mode;
+                                sh->type                  = local->fd->inode->ia_type;
                                 sh->background            = _gf_false;
                                 sh->unwind                = afr_examine_dir_sh_unwind;
 
@@ -560,9 +560,9 @@ afr_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 inum = afr_itransform (entry->d_ino, priv->child_count,
                                        child_index);
                 entry->d_ino = inum;
-                inum  = afr_itransform (entry->d_stat.st_ino,
+                inum  = afr_itransform (entry->d_stat.ia_ino,
                                         priv->child_count, child_index);
-                entry->d_stat.st_ino = inum;
+                entry->d_stat.ia_ino = inum;
 
                 if ((local->fd->inode == local->fd->inode->table->root)
                     && !strcmp (entry->d_name, GF_REPLICATE_TRASH_DIR)) {
diff --git a/xlators/cluster/afr/src/afr-dir-write.c b/xlators/cluster/afr/src/afr-dir-write.c
index 8a6529bfb..14d3e28c4 100644
--- a/xlators/cluster/afr/src/afr-dir-write.c
+++ b/xlators/cluster/afr/src/afr-dir-write.c
@@ -79,7 +79,7 @@ afr_create_unwind (call_frame_t *frame, xlator_t *this)
 	call_frame_t *main_frame = NULL;
         afr_private_t * priv     = NULL;
 	afr_local_t  *local = NULL;
-        struct stat  *unwind_buf = NULL;
+        struct iatt  *unwind_buf = NULL;
 
         priv  = this->private;
 	local = frame->local;
@@ -94,17 +94,17 @@ afr_create_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                if (local->cont.create.read_child_buf.st_ino) {
+                if (local->cont.create.read_child_buf.ia_ino) {
                         unwind_buf = &local->cont.create.read_child_buf;
                 } else {
                         unwind_buf = &local->cont.create.buf;
                 }
 
-                unwind_buf->st_ino = local->cont.create.ino;
-                unwind_buf->st_dev = local->cont.create.gen;
+                unwind_buf->ia_ino = local->cont.create.ino;
+                unwind_buf->ia_gen = local->cont.create.gen;
 
-                local->cont.create.preparent.st_ino  = local->cont.create.parent_ino;
-                local->cont.create.postparent.st_ino = local->cont.create.parent_ino;
+                local->cont.create.preparent.ia_ino  = local->cont.create.parent_ino;
+                local->cont.create.postparent.ia_ino = local->cont.create.parent_ino;
 
 		AFR_STACK_UNWIND (create, main_frame,
                                   local->op_ret, local->op_errno,
@@ -121,8 +121,8 @@ afr_create_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
 		     int32_t op_ret, int32_t op_errno, 
-		     fd_t *fd, inode_t *inode, struct stat *buf,
-                     struct stat *preparent, struct stat *postparent)
+		     fd_t *fd, inode_t *inode, struct iatt *buf,
+                     struct iatt *preparent, struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -176,10 +176,10 @@ afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 				local->cont.create.buf        = *buf;
 
                                 local->cont.create.ino =
-                                        afr_itransform (buf->st_ino,
+                                        afr_itransform (buf->ia_ino,
                                                         priv->child_count,
                                                         child_index);
-                                local->cont.create.gen = buf->st_dev;
+                                local->cont.create.gen = buf->ia_gen;
 
                                 if (priv->read_child >= 0) {
                                         afr_set_read_child (this, inode, 
@@ -192,10 +192,10 @@ afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         
                         if (child_index == local->first_up_child) {
                                 local->cont.create.ino =
-                                        afr_itransform (buf->st_ino,
+                                        afr_itransform (buf->ia_ino,
                                                         priv->child_count,
                                                         local->first_up_child);
-                                local->cont.create.gen = buf->st_dev;
+                                local->cont.create.gen = buf->ia_gen;
                         }
                         
                         if (child_index == local->read_child_index) {
@@ -365,7 +365,7 @@ afr_mknod_unwind (call_frame_t *frame, xlator_t *this)
 	call_frame_t *main_frame = NULL;
 	afr_local_t  *local = NULL;
 
-        struct stat *unwind_buf = NULL;
+        struct iatt *unwind_buf = NULL;
 
 	local = frame->local;
 
@@ -379,17 +379,17 @@ afr_mknod_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                if (local->cont.mknod.read_child_buf.st_ino) {
+                if (local->cont.mknod.read_child_buf.ia_ino) {
                         unwind_buf = &local->cont.mknod.read_child_buf;
                 } else {
                         unwind_buf = &local->cont.mknod.buf;
                 }
 
-                unwind_buf->st_ino = local->cont.mknod.ino;
-                unwind_buf->st_dev = local->cont.mknod.gen;
+                unwind_buf->ia_ino = local->cont.mknod.ino;
+                unwind_buf->ia_gen = local->cont.mknod.gen;
 
-                local->cont.mknod.preparent.st_ino  = local->cont.mknod.parent_ino;
-                local->cont.mknod.postparent.st_ino = local->cont.mknod.parent_ino;
+                local->cont.mknod.preparent.ia_ino  = local->cont.mknod.parent_ino;
+                local->cont.mknod.postparent.ia_ino = local->cont.mknod.parent_ino;
 
 		AFR_STACK_UNWIND (mknod, main_frame,
                                   local->op_ret, local->op_errno,
@@ -405,8 +405,8 @@ afr_mknod_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                     int32_t op_ret, int32_t op_errno, inode_t *inode,
-                    struct stat *buf, struct stat *preparent,
-                    struct stat *postparent)
+                    struct iatt *buf, struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -430,10 +430,10 @@ afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			if (local->success_count == 0){
 				local->cont.mknod.buf   = *buf;
 				local->cont.mknod.ino   = 
-					afr_itransform (buf->st_ino,
+					afr_itransform (buf->ia_ino,
 							priv->child_count,
 							child_index);
-                                local->cont.mknod.gen   = buf->st_dev;
+                                local->cont.mknod.gen   = buf->ia_gen;
 
                                 if (priv->read_child >= 0) {
                                         afr_set_read_child (this, inode,
@@ -446,10 +446,10 @@ afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
                         if (child_index == local->first_up_child) {
                                 local->cont.mknod.ino =
-                                        afr_itransform (buf->st_ino,
+                                        afr_itransform (buf->ia_ino,
                                                         priv->child_count,
                                                         local->first_up_child);
-                                local->cont.mknod.gen = buf->st_dev;
+                                local->cont.mknod.gen = buf->ia_gen;
                         }
 
                         if (child_index == local->read_child_index) {
@@ -615,7 +615,7 @@ afr_mkdir_unwind (call_frame_t *frame, xlator_t *this)
 	call_frame_t *main_frame = NULL;
 	afr_local_t  *local = NULL;
 
-        struct stat *unwind_buf = NULL;
+        struct iatt *unwind_buf = NULL;
         
 	local = frame->local;
 
@@ -629,17 +629,17 @@ afr_mkdir_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                if (local->cont.mkdir.read_child_buf.st_ino) {
+                if (local->cont.mkdir.read_child_buf.ia_ino) {
                         unwind_buf = &local->cont.mkdir.read_child_buf;
                 } else {
                         unwind_buf = &local->cont.mkdir.buf;
                 }
 
-                unwind_buf->st_ino = local->cont.mkdir.ino;
-                unwind_buf->st_dev = local->cont.mkdir.gen;
+                unwind_buf->ia_ino = local->cont.mkdir.ino;
+                unwind_buf->ia_gen = local->cont.mkdir.gen;
 
-                local->cont.mkdir.preparent.st_ino  = local->cont.mkdir.parent_ino;
-                local->cont.mkdir.postparent.st_ino = local->cont.mkdir.parent_ino;
+                local->cont.mkdir.preparent.ia_ino  = local->cont.mkdir.parent_ino;
+                local->cont.mkdir.postparent.ia_ino = local->cont.mkdir.parent_ino;
 
 		AFR_STACK_UNWIND (mkdir, main_frame,
                                   local->op_ret, local->op_errno,
@@ -655,8 +655,8 @@ afr_mkdir_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                     int32_t op_ret, int32_t op_errno, inode_t *inode,
-                    struct stat *buf, struct stat *preparent,
-                    struct stat *postparent)
+                    struct iatt *buf, struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -681,10 +681,10 @@ afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 				local->cont.mkdir.buf   = *buf;
 
                                 local->cont.mkdir.ino =
-                                        afr_itransform (buf->st_ino,
+                                        afr_itransform (buf->ia_ino,
                                                         priv->child_count,
                                                         child_index);
-                                local->cont.mkdir.gen = buf->st_dev;
+                                local->cont.mkdir.gen = buf->ia_gen;
 
                                 if (priv->read_child >= 0) {
                                         afr_set_read_child (this, inode,
@@ -697,10 +697,10 @@ afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
                         if (child_index == local->first_up_child) {
                                 local->cont.mkdir.ino =
-                                        afr_itransform (buf->st_ino,
+                                        afr_itransform (buf->ia_ino,
                                                         priv->child_count,
                                                         local->first_up_child);
-                                local->cont.mkdir.gen = buf->st_dev;
+                                local->cont.mkdir.gen = buf->ia_gen;
                         }
                         
                         if (child_index == local->read_child_index) {
@@ -867,7 +867,7 @@ afr_link_unwind (call_frame_t *frame, xlator_t *this)
 	call_frame_t *main_frame = NULL;
 	afr_local_t  *local = NULL;
 
-        struct stat *unwind_buf = NULL;
+        struct iatt *unwind_buf = NULL;
 
 	local = frame->local;
 
@@ -881,16 +881,16 @@ afr_link_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                if (local->cont.link.read_child_buf.st_ino) {
+                if (local->cont.link.read_child_buf.ia_ino) {
                         unwind_buf = &local->cont.link.read_child_buf;
                 } else {
                         unwind_buf = &local->cont.link.buf;
                 }
 
-		unwind_buf->st_ino = local->cont.link.ino;
+		unwind_buf->ia_ino = local->cont.link.ino;
 
-                local->cont.link.preparent.st_ino  = local->cont.link.parent_ino;
-                local->cont.link.postparent.st_ino = local->cont.link.parent_ino;
+                local->cont.link.preparent.ia_ino  = local->cont.link.parent_ino;
+                local->cont.link.postparent.ia_ino = local->cont.link.parent_ino;
 
 		AFR_STACK_UNWIND (link, main_frame,
                                   local->op_ret, local->op_errno, 
@@ -906,8 +906,8 @@ afr_link_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_link_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
 		   int32_t op_ret, int32_t op_errno, inode_t *inode,
-                   struct stat *buf, struct stat *preparent,
-                   struct stat *postparent)
+                   struct iatt *buf, struct iatt *preparent,
+                   struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -1104,7 +1104,7 @@ afr_symlink_unwind (call_frame_t *frame, xlator_t *this)
 	call_frame_t *main_frame = NULL;
 	afr_local_t  *local = NULL;
         
-        struct stat *unwind_buf = NULL;
+        struct iatt *unwind_buf = NULL;
         
 	local = frame->local;
 
@@ -1118,17 +1118,17 @@ afr_symlink_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                if (local->cont.symlink.read_child_buf.st_ino) {
+                if (local->cont.symlink.read_child_buf.ia_ino) {
                         unwind_buf = &local->cont.symlink.read_child_buf;
                 } else {
                         unwind_buf = &local->cont.symlink.buf;
                 }
 
-                unwind_buf->st_ino = local->cont.symlink.ino;
-                unwind_buf->st_dev = local->cont.symlink.gen;
+                unwind_buf->ia_ino = local->cont.symlink.ino;
+                unwind_buf->ia_gen = local->cont.symlink.gen;
 
-                local->cont.symlink.preparent.st_ino  = local->cont.symlink.parent_ino;
-                local->cont.symlink.postparent.st_ino = local->cont.symlink.parent_ino;
+                local->cont.symlink.preparent.ia_ino  = local->cont.symlink.parent_ino;
+                local->cont.symlink.postparent.ia_ino = local->cont.symlink.parent_ino;
 
 		AFR_STACK_UNWIND (symlink, main_frame,
                                   local->op_ret, local->op_errno,
@@ -1144,8 +1144,8 @@ afr_symlink_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
 		      int32_t op_ret, int32_t op_errno, inode_t *inode,
-                      struct stat *buf, struct stat *preparent,
-                      struct stat *postparent)
+                      struct iatt *buf, struct iatt *preparent,
+                      struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -1169,9 +1169,9 @@ afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			if (local->success_count == 0) {
 				local->cont.symlink.buf        = *buf;
 				local->cont.symlink.ino = 
-					afr_itransform (buf->st_ino, priv->child_count,
+					afr_itransform (buf->ia_ino, priv->child_count,
 							child_index);
-                                local->cont.symlink.gen = buf->st_dev;
+                                local->cont.symlink.gen = buf->ia_gen;
 
                                 if (priv->read_child >= 0) {
                                         afr_set_read_child (this, inode,
@@ -1184,10 +1184,10 @@ afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
                         if (child_index == local->first_up_child) {
                                 local->cont.symlink.ino =
-                                        afr_itransform (buf->st_ino,
+                                        afr_itransform (buf->ia_ino,
                                                         priv->child_count,
                                                         local->first_up_child);
-                                local->cont.symlink.gen = buf->st_dev;
+                                local->cont.symlink.gen = buf->ia_gen;
                         }
 
                         if (child_index == local->read_child_index) {
@@ -1353,7 +1353,7 @@ afr_rename_unwind (call_frame_t *frame, xlator_t *this)
 	call_frame_t *main_frame = NULL;
 	afr_local_t  *local = NULL;
 
-        struct stat *unwind_buf = NULL;
+        struct iatt *unwind_buf = NULL;
 
 	local = frame->local;
 
@@ -1367,18 +1367,18 @@ afr_rename_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                if (local->cont.rename.read_child_buf.st_ino) {
+                if (local->cont.rename.read_child_buf.ia_ino) {
                         unwind_buf = &local->cont.rename.read_child_buf;
                 } else {
                         unwind_buf = &local->cont.rename.buf;
                 }
 
-		unwind_buf->st_ino = local->cont.rename.ino;
+		unwind_buf->ia_ino = local->cont.rename.ino;
 
-                local->cont.rename.preoldparent.st_ino  = local->cont.rename.oldparent_ino;
-                local->cont.rename.postoldparent.st_ino = local->cont.rename.oldparent_ino;
-                local->cont.rename.prenewparent.st_ino  = local->cont.rename.newparent_ino;
-                local->cont.rename.postnewparent.st_ino = local->cont.rename.newparent_ino;
+                local->cont.rename.preoldparent.ia_ino  = local->cont.rename.oldparent_ino;
+                local->cont.rename.postoldparent.ia_ino = local->cont.rename.oldparent_ino;
+                local->cont.rename.prenewparent.ia_ino  = local->cont.rename.newparent_ino;
+                local->cont.rename.postnewparent.ia_ino = local->cont.rename.newparent_ino;
 
 		AFR_STACK_UNWIND (rename, main_frame,
                                   local->op_ret, local->op_errno, 
@@ -1395,9 +1395,9 @@ afr_rename_unwind (call_frame_t *frame, xlator_t *this)
 
 int
 afr_rename_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-		     int32_t op_ret, int32_t op_errno, struct stat *buf,
-                     struct stat *preoldparent, struct stat *postoldparent,
-                     struct stat *prenewparent, struct stat *postnewparent)
+		     int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                     struct iatt *preoldparent, struct iatt *postoldparent,
+                     struct iatt *prenewparent, struct iatt *postnewparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -1599,8 +1599,8 @@ afr_unlink_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.unlink.preparent.st_ino  = local->cont.unlink.parent_ino;
-                local->cont.unlink.postparent.st_ino = local->cont.unlink.parent_ino;
+                local->cont.unlink.preparent.ia_ino  = local->cont.unlink.parent_ino;
+                local->cont.unlink.postparent.ia_ino = local->cont.unlink.parent_ino;
 
 		AFR_STACK_UNWIND (unlink, main_frame,
                                   local->op_ret, local->op_errno,
@@ -1614,8 +1614,8 @@ afr_unlink_unwind (call_frame_t *frame, xlator_t *this)
 
 int
 afr_unlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-		     int32_t op_ret, int32_t op_errno, struct stat *preparent,
-                     struct stat *postparent)
+		     int32_t op_ret, int32_t op_errno, struct iatt *preparent,
+                     struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -1814,8 +1814,8 @@ afr_rmdir_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.rmdir.preparent.st_ino  = local->cont.rmdir.parent_ino;
-                local->cont.rmdir.postparent.st_ino = local->cont.rmdir.parent_ino;
+                local->cont.rmdir.preparent.ia_ino  = local->cont.rmdir.parent_ino;
+                local->cont.rmdir.postparent.ia_ino = local->cont.rmdir.parent_ino;
 
 		AFR_STACK_UNWIND (rmdir, main_frame,
                                   local->op_ret, local->op_errno,
@@ -1829,8 +1829,8 @@ afr_rmdir_unwind (call_frame_t *frame, xlator_t *this)
 
 int
 afr_rmdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-		    int32_t op_ret, int32_t op_errno, struct stat *preparent,
-                    struct stat *postparent)
+		    int32_t op_ret, int32_t op_errno, struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
diff --git a/xlators/cluster/afr/src/afr-inode-read.c b/xlators/cluster/afr/src/afr-inode-read.c
index 3b89da9ab..9ce103675 100644
--- a/xlators/cluster/afr/src/afr-inode-read.c
+++ b/xlators/cluster/afr/src/afr-inode-read.c
@@ -179,7 +179,7 @@ out:
 int32_t
 afr_stat_cbk (call_frame_t *frame, void *cookie,
 	      xlator_t *this, int32_t op_ret, int32_t op_errno,
-	      struct stat *buf)
+	      struct iatt *buf)
 {
 	afr_private_t * priv     = NULL;
 	afr_local_t *   local    = NULL;
@@ -222,7 +222,7 @@ afr_stat_cbk (call_frame_t *frame, void *cookie,
 out:
 	if (unwind) {
 		if (buf)
-			buf->st_ino = local->cont.stat.ino;
+			buf->ia_ino = local->cont.stat.ino;
 
 		AFR_STACK_UNWIND (stat, frame, op_ret, op_errno, buf);
 	}
@@ -303,7 +303,7 @@ out:
 int32_t
 afr_fstat_cbk (call_frame_t *frame, void *cookie,
 	       xlator_t *this, int32_t op_ret, int32_t op_errno,
-	       struct stat *buf)
+	       struct iatt *buf)
 {
 	afr_private_t * priv     = NULL;
 	afr_local_t *   local    = NULL;
@@ -346,7 +346,7 @@ afr_fstat_cbk (call_frame_t *frame, void *cookie,
 out:
 	if (unwind) {
 		if (buf)
-			buf->st_ino = local->cont.fstat.ino;
+			buf->ia_ino = local->cont.fstat.ino;
 
 		AFR_STACK_UNWIND (fstat, frame, op_ret, op_errno, buf);
 	}
@@ -428,7 +428,7 @@ out:
 int32_t
 afr_readlink_cbk (call_frame_t *frame, void *cookie,
 		  xlator_t *this, int32_t op_ret, int32_t op_errno,
-		  const char *buf, struct stat *sbuf)
+		  const char *buf, struct iatt *sbuf)
 {
 	afr_private_t * priv     = NULL;
 	afr_local_t *   local    = NULL;
@@ -471,7 +471,7 @@ afr_readlink_cbk (call_frame_t *frame, void *cookie,
 out:
 	if (unwind) {
                 if (sbuf)
-                        sbuf->st_ino = local->cont.readlink.ino;
+                        sbuf->ia_ino = local->cont.readlink.ino;
 
 		AFR_STACK_UNWIND (readlink, frame, op_ret, op_errno, buf, sbuf);
 	}
@@ -748,7 +748,7 @@ out:
 int32_t
 afr_readv_cbk (call_frame_t *frame, void *cookie,
 	       xlator_t *this, int32_t op_ret, int32_t op_errno,
-	       struct iovec *vector, int32_t count, struct stat *buf,
+	       struct iovec *vector, int32_t count, struct iatt *buf,
                struct iobref *iobref)
 {
 	afr_private_t * priv     = NULL;
@@ -803,7 +803,7 @@ afr_readv_cbk (call_frame_t *frame, void *cookie,
 out:
 	if (unwind) {
                 if (buf)
-                        buf->st_ino = local->cont.readv.ino;
+                        buf->ia_ino = local->cont.readv.ino;
 
 		AFR_STACK_UNWIND (readv, frame, op_ret, op_errno,
                                   vector, count, buf, iobref);
diff --git a/xlators/cluster/afr/src/afr-inode-write.c b/xlators/cluster/afr/src/afr-inode-write.c
index 32e93e6e2..7b7408bbc 100644
--- a/xlators/cluster/afr/src/afr-inode-write.c
+++ b/xlators/cluster/afr/src/afr-inode-write.c
@@ -69,8 +69,8 @@ afr_writev_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.writev.prebuf.st_ino  = local->cont.writev.ino;
-                local->cont.writev.postbuf.st_ino = local->cont.writev.ino;
+                local->cont.writev.prebuf.ia_ino  = local->cont.writev.ino;
+                local->cont.writev.postbuf.ia_ino = local->cont.writev.ino;
 
 		AFR_STACK_UNWIND (writev, main_frame,
                                   local->op_ret, local->op_errno,
@@ -83,8 +83,8 @@ afr_writev_unwind (call_frame_t *frame, xlator_t *this)
 
 int
 afr_writev_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-		     int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                     struct stat *postbuf)
+		     int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                     struct iatt *postbuf)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -350,8 +350,8 @@ afr_truncate_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.truncate.prebuf.st_ino  = local->cont.truncate.ino;
-                local->cont.truncate.postbuf.st_ino = local->cont.truncate.ino;
+                local->cont.truncate.prebuf.ia_ino  = local->cont.truncate.ino;
+                local->cont.truncate.postbuf.ia_ino = local->cont.truncate.ino;
 
                 AFR_STACK_UNWIND (truncate, main_frame, local->op_ret,
                                   local->op_errno,
@@ -365,8 +365,8 @@ afr_truncate_unwind (call_frame_t *frame, xlator_t *this)
 
 int
 afr_truncate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-		       int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                       struct stat *postbuf)
+		       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                       struct iatt *postbuf)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -569,8 +569,8 @@ afr_ftruncate_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.ftruncate.prebuf.st_ino  = local->cont.ftruncate.ino;
-                local->cont.ftruncate.postbuf.st_ino = local->cont.ftruncate.ino;
+                local->cont.ftruncate.prebuf.ia_ino  = local->cont.ftruncate.ino;
+                local->cont.ftruncate.postbuf.ia_ino = local->cont.ftruncate.ino;
 
 		AFR_STACK_UNWIND (ftruncate, main_frame, local->op_ret,
                                   local->op_errno,
@@ -583,8 +583,8 @@ afr_ftruncate_unwind (call_frame_t *frame, xlator_t *this)
 
 int
 afr_ftruncate_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-			int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                        struct stat *postbuf)
+			int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                        struct iatt *postbuf)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -828,8 +828,8 @@ afr_setattr_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.setattr.preop_buf.st_ino  = local->cont.setattr.ino;
-                local->cont.setattr.postop_buf.st_ino = local->cont.setattr.ino;
+                local->cont.setattr.preop_buf.ia_ino  = local->cont.setattr.ino;
+                local->cont.setattr.postop_buf.ia_ino = local->cont.setattr.ino;
 
                 AFR_STACK_UNWIND (setattr, main_frame, local->op_ret,
                                   local->op_errno,
@@ -844,7 +844,7 @@ afr_setattr_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_setattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                       int32_t op_ret, int32_t op_errno,
-                      struct stat *preop, struct stat *postop)
+                      struct iatt *preop, struct iatt *postop)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -961,7 +961,7 @@ afr_setattr_done (call_frame_t *frame, xlator_t *this)
 
 int
 afr_setattr (call_frame_t *frame, xlator_t *this,
-             loc_t *loc, struct stat *buf, int32_t valid)
+             loc_t *loc, struct iatt *buf, int32_t valid)
 {
 	afr_private_t * priv  = NULL;
 	afr_local_t   * local = NULL;
@@ -1046,9 +1046,9 @@ afr_fsetattr_unwind (call_frame_t *frame, xlator_t *this)
 	UNLOCK (&frame->lock);
 
 	if (main_frame) {
-                local->cont.fsetattr.preop_buf.st_ino  =
+                local->cont.fsetattr.preop_buf.ia_ino  =
                         local->cont.fsetattr.ino;
-                local->cont.fsetattr.postop_buf.st_ino =
+                local->cont.fsetattr.postop_buf.ia_ino =
                         local->cont.fsetattr.ino;
 
                 AFR_STACK_UNWIND (fsetattr, main_frame, local->op_ret,
@@ -1064,7 +1064,7 @@ afr_fsetattr_unwind (call_frame_t *frame, xlator_t *this)
 int
 afr_fsetattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                       int32_t op_ret, int32_t op_errno,
-                      struct stat *preop, struct stat *postop)
+                      struct iatt *preop, struct iatt *postop)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
@@ -1181,7 +1181,7 @@ afr_fsetattr_done (call_frame_t *frame, xlator_t *this)
 
 int
 afr_fsetattr (call_frame_t *frame, xlator_t *this,
-              fd_t *fd, struct stat *buf, int32_t valid)
+              fd_t *fd, struct iatt *buf, int32_t valid)
 {
 	afr_private_t * priv  = NULL;
 	afr_local_t   * local = NULL;
diff --git a/xlators/cluster/afr/src/afr-inode-write.h b/xlators/cluster/afr/src/afr-inode-write.h
index 66da777b6..f0c2fbe00 100644
--- a/xlators/cluster/afr/src/afr-inode-write.h
+++ b/xlators/cluster/afr/src/afr-inode-write.h
@@ -55,11 +55,11 @@ afr_utimens (call_frame_t *frame, xlator_t *this,
 
 int
 afr_setattr (call_frame_t *frame, xlator_t *this,
-             loc_t *loc, struct stat *buf, int32_t valid);
+             loc_t *loc, struct iatt *buf, int32_t valid);
 
 int
 afr_fsetattr (call_frame_t *frame, xlator_t *this,
-              fd_t *fd, struct stat *buf, int32_t valid);
+              fd_t *fd, struct iatt *buf, int32_t valid);
 
 int32_t
 afr_setxattr (call_frame_t *frame, xlator_t *this,
diff --git a/xlators/cluster/afr/src/afr-open.c b/xlators/cluster/afr/src/afr-open.c
index ae58eef06..1bfeb9cdf 100644
--- a/xlators/cluster/afr/src/afr-open.c
+++ b/xlators/cluster/afr/src/afr-open.c
@@ -58,8 +58,8 @@
 
 int
 afr_open_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
-			int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                        struct stat *postbuf)
+			int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                        struct iatt *postbuf)
 {
 	afr_local_t * local = frame->local;
 
@@ -370,7 +370,7 @@ afr_up_down_flush_post_post_op (call_frame_t *frame, xlator_t *this)
 
         sh->data_lock_held      = _gf_true;
         sh->need_data_self_heal = _gf_true;
-        sh->mode                = local->fd->inode->st_mode;
+        sh->type                = local->fd->inode->ia_type;
         sh->background          = _gf_false;
         sh->unwind              = afr_up_down_flush_sh_unwind;
 
diff --git a/xlators/cluster/afr/src/afr-self-heal-algorithm.c b/xlators/cluster/afr/src/afr-self-heal-algorithm.c
index eefd1ff7b..f840c1bbe 100644
--- a/xlators/cluster/afr/src/afr-self-heal-algorithm.c
+++ b/xlators/cluster/afr/src/afr-self-heal-algorithm.c
@@ -114,8 +114,8 @@ sh_full_loop_return (call_frame_t *rw_frame, xlator_t *this, off_t offset)
 
 static int
 sh_full_write_cbk (call_frame_t *rw_frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                   struct stat *postbuf)
+                   int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                   struct iatt *postbuf)
 {
 	afr_private_t * priv    = NULL;
 	afr_local_t * rw_local  = NULL;
@@ -169,7 +169,7 @@ sh_full_write_cbk (call_frame_t *rw_frame, void *cookie, xlator_t *this,
 static int
 sh_full_read_cbk (call_frame_t *rw_frame, void *cookie,
                   xlator_t *this, int32_t op_ret, int32_t op_errno,
-                  struct iovec *vector, int32_t count, struct stat *buf,
+                  struct iovec *vector, int32_t count, struct iatt *buf,
                   struct iobref *iobref)
 {
 	afr_private_t * priv    = NULL;
@@ -538,8 +538,8 @@ sh_diff_loop_return (call_frame_t *rw_frame, xlator_t *this,
 
 static int
 sh_diff_write_cbk (call_frame_t *rw_frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct stat *buf,
-                   struct stat *postbuf)
+                   int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                   struct iatt *postbuf)
 {
 	afr_private_t *   priv     = NULL;
 	afr_local_t *     rw_local = NULL;
@@ -601,7 +601,7 @@ sh_diff_write_cbk (call_frame_t *rw_frame, void *cookie, xlator_t *this,
 static int
 sh_diff_read_cbk (call_frame_t *rw_frame, void *cookie,
                   xlator_t *this, int32_t op_ret, int32_t op_errno,
-                  struct iovec *vector, int32_t count, struct stat *buf,
+                  struct iovec *vector, int32_t count, struct iatt *buf,
                   struct iobref *iobref)
 {
 	afr_private_t *   priv     = NULL;
diff --git a/xlators/cluster/afr/src/afr-self-heal-common.c b/xlators/cluster/afr/src/afr-self-heal-common.c
index fbd13e47a..dead7a323 100644
--- a/xlators/cluster/afr/src/afr-self-heal-common.c
+++ b/xlators/cluster/afr/src/afr-self-heal-common.c
@@ -441,7 +441,7 @@ afr_sh_mark_biggest_as_source (afr_self_heal_t *sh, int child_count)
 
 
 static int
-afr_sh_mark_lowest_uid_as_source (afr_self_heal_t *sh, int child_count)
+afr_sh_mark_loweia_uid_as_source (afr_self_heal_t *sh, int child_count)
 {
         uid_t smallest = 0;
         int i;
@@ -450,7 +450,7 @@ afr_sh_mark_lowest_uid_as_source (afr_self_heal_t *sh, int child_count)
                 if (!sh->buf)
                         break;
 
-                if (sh->buf[i].st_uid < sh->buf[smallest].st_uid) {
+                if (sh->buf[i].ia_uid < sh->buf[smallest].ia_uid) {
                         smallest = i;
                 }
         }
@@ -513,7 +513,7 @@ afr_sh_mark_sources (afr_self_heal_t *sh, int child_count,
         if ((type == AFR_SELF_HEAL_METADATA)
             && afr_sh_all_nodes_innocent (characters, child_count)) {
 
-                nsources = afr_sh_mark_lowest_uid_as_source (sh, child_count);
+                nsources = afr_sh_mark_loweia_uid_as_source (sh, child_count);
                 goto out;
         }
 
@@ -864,7 +864,7 @@ sh_missing_entries_finish (call_frame_t *frame, xlator_t *this)
 static int
 sh_destroy_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		int32_t op_ret, int op_errno,
-                struct stat *preop, struct stat *postop)
+                struct iatt *preop, struct iatt *postop)
 {
         afr_local_t *local = NULL;
 
@@ -899,9 +899,9 @@ static int
 sh_missing_entries_newentry_cbk (call_frame_t *frame, void *cookie,
 				 xlator_t *this,
 				 int32_t op_ret, int32_t op_errno,
-				 inode_t *inode, struct stat *buf,
-                                 struct stat *preparent,
-                                 struct stat *postparent)
+				 inode_t *inode, struct iatt *buf,
+                                 struct iatt *preparent,
+                                 struct iatt *postparent)
 {
 	afr_local_t     *local = NULL;
 	afr_self_heal_t *sh = NULL;
@@ -912,7 +912,7 @@ sh_missing_entries_newentry_cbk (call_frame_t *frame, void *cookie,
 
         loc_t *parent_loc = NULL;
 
-	struct stat     stbuf;
+	struct iatt     stbuf;
         int32_t valid;
 
 	local = frame->local;
@@ -921,20 +921,13 @@ sh_missing_entries_newentry_cbk (call_frame_t *frame, void *cookie,
 
 	child_index = (long) cookie;
 
-#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
-	stbuf.st_atim = sh->buf[sh->source].st_atim;
-	stbuf.st_mtim = sh->buf[sh->source].st_mtim;
-        
-#elif HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
-	stbuf.st_atimespec = sh->buf[sh->source].st_atimespec;
-	stbuf.st_mtimespec = sh->buf[sh->source].st_mtimespec;
-#else
-	stbuf.st_atime = sh->buf[sh->source].st_atime;
-	stbuf.st_mtime = sh->buf[sh->source].st_mtime;
-#endif
-
-        stbuf.st_uid = sh->buf[sh->source].st_uid;
-        stbuf.st_gid = sh->buf[sh->source].st_gid;
+	stbuf.ia_atime = sh->buf[sh->source].ia_atime;
+	stbuf.ia_atime_nsec = sh->buf[sh->source].ia_atime_nsec;
+	stbuf.ia_mtime = sh->buf[sh->source].ia_mtime;
+	stbuf.ia_mtime_nsec = sh->buf[sh->source].ia_mtime_nsec;
+
+        stbuf.ia_uid = sh->buf[sh->source].ia_uid;
+        stbuf.ia_gid = sh->buf[sh->source].ia_gid;
         
         valid = GF_SET_ATTR_UID   | GF_SET_ATTR_GID |
                 GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME;
@@ -987,7 +980,7 @@ sh_missing_entries_mknod (call_frame_t *frame, xlator_t *this)
 	int              enoent_count = 0;
 	int              call_count = 0;
 	mode_t           st_mode = 0;
-	dev_t            st_dev = 0;
+	dev_t            ia_gen = 0;
 
 
 	local = frame->local;
@@ -1001,8 +994,9 @@ sh_missing_entries_mknod (call_frame_t *frame, xlator_t *this)
 	call_count = enoent_count;
 	local->call_count = call_count;
 
-	st_mode = sh->buf[sh->source].st_mode;
-	st_dev  = sh->buf[sh->source].st_dev;
+	st_mode = st_mode_from_ia (sh->buf[sh->source].ia_prot,
+                                   sh->buf[sh->source].ia_type);
+	ia_gen  = sh->buf[sh->source].ia_gen;
 
 	gf_log (this->name, GF_LOG_TRACE,
 		"mknod %s mode 0%o on %d subvolumes",
@@ -1015,7 +1009,7 @@ sh_missing_entries_mknod (call_frame_t *frame, xlator_t *this)
 					   (void *) (long) i,
 					   priv->children[i],
 					   priv->children[i]->fops->mknod,
-					   &local->loc, st_mode, st_dev);
+					   &local->loc, st_mode, ia_gen);
 			if (!--call_count)
 				break;
 		}
@@ -1048,7 +1042,8 @@ sh_missing_entries_mkdir (call_frame_t *frame, xlator_t *this)
 	call_count = enoent_count;
 	local->call_count = call_count;
 
-	st_mode = sh->buf[sh->source].st_mode;
+	st_mode = st_mode_from_ia (sh->buf[sh->source].ia_prot,
+                                   sh->buf[sh->source].ia_type);
 
 	gf_log (this->name, GF_LOG_TRACE,
 		"mkdir %s mode 0%o on %d subvolumes",
@@ -1127,7 +1122,7 @@ static int
 sh_missing_entries_readlink_cbk (call_frame_t *frame, void *cookie,
 				 xlator_t *this,
 				 int32_t op_ret, int32_t op_errno,
-				 const char *link, struct stat *sbuf)
+				 const char *link, struct iatt *sbuf)
 {
 	if (op_ret > 0)
 		sh_missing_entries_symlink (frame, this, link);
@@ -1181,7 +1176,7 @@ sh_missing_entries_create (call_frame_t *frame, xlator_t *this)
 				enoent_count++;
 		} else {
 			if (type) {
-				if (type != (sh->buf[i].st_mode & S_IFMT)) {
+				if (type != sh->buf[i].ia_type) {
                                         gf_log (this->name, GF_LOG_TRACE,
                                                 "file %s is govinda!",
                                                 local->loc.path);
@@ -1190,7 +1185,7 @@ sh_missing_entries_create (call_frame_t *frame, xlator_t *this)
                                 }
 			} else {
 				sh->source = i;
-				type = sh->buf[i].st_mode & S_IFMT;
+				type = sh->buf[i].ia_type;
 			}
 		}
 	}
@@ -1252,8 +1247,8 @@ static int
 sh_missing_entries_lookup_cbk (call_frame_t *frame, void *cookie,
 			       xlator_t *this,
 			       int32_t op_ret, int32_t op_errno,
-                               inode_t *inode, struct stat *buf, dict_t *xattr,
-                               struct stat *postparent)
+                               inode_t *inode, struct iatt *buf, dict_t *xattr,
+                               struct iatt *postparent)
 {
 	int              child_index = 0;
 	afr_local_t     *local = NULL;
@@ -1275,7 +1270,7 @@ sh_missing_entries_lookup_cbk (call_frame_t *frame, void *cookie,
 				"path %s on subvolume %s is of mode 0%o",
 				local->loc.path,
 				priv->children[child_index]->name,
-				buf->st_mode);
+				buf->ia_type);
 
 			local->self_heal.buf[child_index] = *buf;
                         local->self_heal.parentbuf        = *postparent;
@@ -1472,7 +1467,7 @@ afr_local_t *afr_local_copy (afr_local_t *l, xlator_t *this)
         else
                 shc->healing_fd = sh->healing_fd;
         shc->background = sh->background;
-        shc->mode = sh->mode;
+        shc->type = sh->type;
 
         if (l->loc.path)
                 loc_copy (&lc->loc, &l->loc);
diff --git a/xlators/cluster/afr/src/afr-self-heal-common.h b/xlators/cluster/afr/src/afr-self-heal-common.h
index be556a3c7..298ac022a 100644
--- a/xlators/cluster/afr/src/afr-self-heal-common.h
+++ b/xlators/cluster/afr/src/afr-self-heal-common.h
@@ -20,7 +20,7 @@
 #ifndef __AFR_SELF_HEAL_COMMON_H__
 #define __AFR_SELF_HEAL_COMMON_H__
 
-#define FILE_HAS_HOLES(buf) (((buf)->st_size) > ((buf)->st_blocks * 512))
+#define FILE_HAS_HOLES(buf) (((buf)->ia_size) > ((buf)->ia_blocks * 512))
 
 typedef enum {
         AFR_SELF_HEAL_ENTRY,
diff --git a/xlators/cluster/afr/src/afr-self-heal-data.c b/xlators/cluster/afr/src/afr-self-heal-data.c
index 75090ad79..5711c89cf 100644
--- a/xlators/cluster/afr/src/afr-self-heal-data.c
+++ b/xlators/cluster/afr/src/afr-self-heal-data.c
@@ -124,7 +124,7 @@ afr_sh_data_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int
 afr_sh_data_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                        int32_t op_ret, int32_t op_errno, struct stat *statpre, struct stat *statpost)
+                        int32_t op_ret, int32_t op_errno, struct iatt *statpre, struct iatt *statpost)
 {
         afr_sh_data_flush_cbk (frame, cookie, this, op_ret, op_errno);
 
@@ -145,7 +145,7 @@ afr_sh_data_close (call_frame_t *frame, xlator_t *this)
         int  active_sinks = 0;
         int32_t valid     = 0;
 
-        struct stat stbuf = {0,};
+        struct iatt stbuf = {0,};
         
         local = frame->local;
         sh    = &local->self_heal;
@@ -156,17 +156,10 @@ afr_sh_data_close (call_frame_t *frame, xlator_t *this)
 
         valid |= (GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME);
 
-#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
-	stbuf.st_atim = sh->buf[source].st_atim;
-	stbuf.st_mtim = sh->buf[source].st_mtim;
-        
-#elif HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
-	stbuf.st_atimespec = sh->buf[source].st_atimespec;
-	stbuf.st_mtimespec = sh->buf[source].st_mtimespec;
-#else
-	stbuf.st_atime = sh->buf[source].st_atime;
-	stbuf.st_mtime = sh->buf[source].st_mtime;
-#endif
+	stbuf.ia_atime = sh->buf[source].ia_atime;
+	stbuf.ia_atime_nsec = sh->buf[source].ia_atime_nsec;
+	stbuf.ia_mtime = sh->buf[source].ia_mtime;
+	stbuf.ia_mtime_nsec = sh->buf[source].ia_mtime_nsec;
 
         if (sh->healing_fd_opened) {
                 /* not our job to close the fd */
@@ -440,8 +433,8 @@ afr_sh_data_erase_pending (call_frame_t *frame, xlator_t *this)
 
 int
 afr_sh_data_trim_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		      int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                      struct stat *postbuf)
+		      int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                      struct iatt *postbuf)
 {
 	afr_private_t * priv = NULL;
 	afr_local_t * local  = NULL;
@@ -543,7 +536,7 @@ sh_zero_byte_files_exist (afr_self_heal_t *sh, int child_count)
         int ret = 0;
 
         for (i = 0; i < child_count; i++) {
-                if (sh->buf[i].st_size == 0) {
+                if (sh->buf[i].ia_size == 0) {
                         ret = 1;
                         break;
                 }
@@ -722,13 +715,13 @@ afr_sh_data_fix (call_frame_t *frame, xlator_t *this)
 
 	sh->source     = source;
 	sh->block_size = 65536;
-	sh->file_size  = sh->buf[source].st_size;
+	sh->file_size  = sh->buf[source].ia_size;
 
 	if (FILE_HAS_HOLES (&sh->buf[source]))
 		sh->file_has_holes = 1;
 
         orig_local = sh->orig_frame->local;
-        orig_local->cont.lookup.buf.st_size = sh->buf[source].st_size;
+        orig_local->cont.lookup.buf.ia_size = sh->buf[source].ia_size;
 
 	/* detect changes not visible through pending flags -- JIC */
 	for (i = 0; i < priv->child_count; i++) {
@@ -788,7 +781,7 @@ afr_self_heal_get_source (xlator_t *this, afr_local_t *local, dict_t **xattr)
 int
 afr_sh_data_fstat_cbk (call_frame_t *frame, void *cookie,
                        xlator_t *this, int32_t op_ret, int32_t op_errno,
-                       struct stat *buf)
+                       struct iatt *buf)
 {
 	afr_private_t   *priv  = NULL;
 	afr_local_t     *local = NULL;
diff --git a/xlators/cluster/afr/src/afr-self-heal-entry.c b/xlators/cluster/afr/src/afr-self-heal-entry.c
index 17c82d565..ef8de1987 100644
--- a/xlators/cluster/afr/src/afr-self-heal-entry.c
+++ b/xlators/cluster/afr/src/afr-self-heal-entry.c
@@ -448,7 +448,7 @@ int
 afr_sh_entry_expunge_parent_setattr_cbk (call_frame_t *expunge_frame,
                                          void *cookie, xlator_t *this,
                                          int32_t op_ret, int32_t op_errno,
-                                         struct stat *preop, struct stat *postop)
+                                         struct iatt *preop, struct iatt *postop)
 {
 	afr_private_t   *priv          = NULL;
 	afr_local_t     *expunge_local = NULL;
@@ -480,11 +480,11 @@ int
 afr_sh_entry_expunge_rename_cbk (call_frame_t *expunge_frame, void *cookie,
 				 xlator_t *this,
 				 int32_t op_ret, int32_t op_errno,
-                                 struct stat *buf,
-                                 struct stat *preoldparent,
-                                 struct stat *postoldparent,
-                                 struct stat *prenewparent,
-                                 struct stat *postnewparent)
+                                 struct iatt *buf,
+                                 struct iatt *preoldparent,
+                                 struct iatt *postoldparent,
+                                 struct iatt *prenewparent,
+                                 struct iatt *postnewparent)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *expunge_local = NULL;
@@ -596,8 +596,8 @@ afr_sh_entry_expunge_rename (call_frame_t *expunge_frame, xlator_t *this,
 int
 afr_sh_entry_expunge_mkdir_cbk (call_frame_t *expunge_frame, void *cookie, xlator_t *this,
                                 int32_t op_ret, int32_t op_errno, inode_t *inode,
-                                struct stat *buf, struct stat *preparent,
-                                struct stat *postparent)
+                                struct iatt *buf, struct iatt *preparent,
+                                struct iatt *postparent)
 {
         afr_private_t *priv            = NULL;
         afr_local_t     *expunge_local = NULL;
@@ -640,8 +640,8 @@ int
 afr_sh_entry_expunge_lookup_trash_cbk (call_frame_t *expunge_frame, void *cookie,
                                        xlator_t *this,
                                        int32_t op_ret, int32_t op_errno,
-                                       inode_t *inode, struct stat *buf,
-                                       dict_t *xattr, struct stat *postparent)
+                                       inode_t *inode, struct iatt *buf,
+                                       dict_t *xattr, struct iatt *postparent)
 {
         afr_private_t *priv            = NULL;
         afr_local_t     *expunge_local = NULL;
@@ -745,7 +745,7 @@ afr_sh_entry_expunge_lookup_trash (call_frame_t *expunge_frame, xlator_t *this,
 
 int
 afr_sh_entry_expunge_remove (call_frame_t *expunge_frame, xlator_t *this,
-			     int active_src, struct stat *buf)
+			     int active_src, struct iatt *buf)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *expunge_local = NULL;
@@ -760,7 +760,7 @@ afr_sh_entry_expunge_remove (call_frame_t *expunge_frame, xlator_t *this,
 	frame = expunge_sh->sh_frame;
 	source = expunge_sh->source;
 
-	type = (buf->st_mode & S_IFMT);
+	type = buf->ia_type;
 
 	switch (type) {
 	case S_IFSOCK:
@@ -794,8 +794,8 @@ int
 afr_sh_entry_expunge_lookup_cbk (call_frame_t *expunge_frame, void *cookie,
 				xlator_t *this,
 				int32_t op_ret,	int32_t op_errno,
-                                inode_t *inode, struct stat *buf, dict_t *x,
-                                struct stat *postparent)
+                                inode_t *inode, struct iatt *buf, dict_t *x,
+                                struct iatt *postparent)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *expunge_local = NULL;
@@ -857,8 +857,8 @@ int
 afr_sh_entry_expunge_entry_cbk (call_frame_t *expunge_frame, void *cookie,
 				xlator_t *this,
 				int32_t op_ret,	int32_t op_errno,
-                                inode_t *inode, struct stat *buf, dict_t *x,
-                                struct stat *postparent)
+                                inode_t *inode, struct iatt *buf, dict_t *x,
+                                struct iatt *postparent)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *expunge_local = NULL;
@@ -1148,7 +1148,7 @@ int
 afr_sh_entry_impunge_setattr_cbk (call_frame_t *impunge_frame, void *cookie,
 				  xlator_t *this,
                                   int32_t op_ret, int32_t op_errno,
-                                  struct stat *preop, struct stat *postop)
+                                  struct iatt *preop, struct iatt *postop)
 {
 	int              call_count = 0;
 	afr_private_t   *priv = NULL;
@@ -1209,7 +1209,7 @@ afr_sh_entry_impunge_xattrop_cbk (call_frame_t *impunge_frame, void *cookie,
 	call_frame_t    *frame = NULL;
 	int              child_index = 0;
 
-        struct stat stbuf;
+        struct iatt stbuf;
         int32_t     valid = 0;
 
 	priv          = this->private;
@@ -1223,23 +1223,16 @@ afr_sh_entry_impunge_xattrop_cbk (call_frame_t *impunge_frame, void *cookie,
 		"setting ownership of %s on %s to %d/%d",
 		impunge_local->loc.path,
 		priv->children[child_index]->name,
-		impunge_local->cont.lookup.buf.st_uid,
-		impunge_local->cont.lookup.buf.st_gid);
-
-#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
-	stbuf.st_atim = impunge_local->cont.lookup.buf.st_atim;
-	stbuf.st_mtim = impunge_local->cont.lookup.buf.st_mtim;
-
-#elif HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
-	stbuf.st_atimespec = impunge_local->cont.lookup.buf.st_atimespec;
-	stbuf.st_mtimespec = impunge_local->cont.lookup.buf.st_mtimespec;
-#else
-	stbuf.st_atime = impunge_local->cont.lookup.buf.st_atime;
-	stbuf.st_mtime = impunge_local->cont.lookup.buf.st_mtime;
-#endif
+		impunge_local->cont.lookup.buf.ia_uid,
+		impunge_local->cont.lookup.buf.ia_gid);
+
+	stbuf.ia_atime = impunge_local->cont.lookup.buf.ia_atime;
+	stbuf.ia_atime_nsec = impunge_local->cont.lookup.buf.ia_atime_nsec;
+	stbuf.ia_mtime = impunge_local->cont.lookup.buf.ia_mtime;
+	stbuf.ia_mtime_nsec = impunge_local->cont.lookup.buf.ia_mtime_nsec;
 
-        stbuf.st_uid = impunge_local->cont.lookup.buf.st_uid;
-        stbuf.st_gid = impunge_local->cont.lookup.buf.st_gid;
+        stbuf.ia_uid = impunge_local->cont.lookup.buf.ia_uid;
+        stbuf.ia_gid = impunge_local->cont.lookup.buf.ia_gid;
 
         valid = GF_SET_ATTR_UID   | GF_SET_ATTR_GID |
                 GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME;
@@ -1258,7 +1251,7 @@ int
 afr_sh_entry_impunge_parent_setattr_cbk (call_frame_t *setattr_frame,
                                          void *cookie, xlator_t *this,
                                          int32_t op_ret, int32_t op_errno,
-                                         struct stat *preop, struct stat *postop)
+                                         struct iatt *preop, struct iatt *postop)
 {
         loc_t *parent_loc = cookie;
 
@@ -1281,9 +1274,9 @@ int
 afr_sh_entry_impunge_newfile_cbk (call_frame_t *impunge_frame, void *cookie,
 				  xlator_t *this,
 				  int32_t op_ret, int32_t op_errno,
-                                  inode_t *inode, struct stat *stbuf,
-                                  struct stat *preparent,
-                                  struct stat *postparent)
+                                  inode_t *inode, struct iatt *stbuf,
+                                  struct iatt *preparent,
+                                  struct iatt *postparent)
 {
 	int              call_count = 0;
 	afr_private_t   *priv = NULL;
@@ -1302,7 +1295,7 @@ afr_sh_entry_impunge_newfile_cbk (call_frame_t *impunge_frame, void *cookie,
         call_frame_t *setattr_frame = NULL;
         int32_t valid = 0;
         loc_t *parent_loc = NULL;
-        struct stat parentbuf;
+        struct iatt parentbuf;
 
 	priv = this->private;
 	impunge_local = impunge_frame->local;
@@ -1323,14 +1316,14 @@ afr_sh_entry_impunge_newfile_cbk (call_frame_t *impunge_frame, void *cookie,
 		goto out;
 	}
 
-	inode->st_mode = stbuf->st_mode;
+	inode->ia_type = stbuf->ia_type;
 
         xattr = get_new_dict ();
         dict_ref (xattr);
 
         idx = afr_index_for_transaction_type (AFR_METADATA_TRANSACTION);
         pending_array[idx] = hton32 (1);
-        if (S_ISDIR (stbuf->st_mode))
+        if (IA_ISDIR (stbuf->ia_type))
                 idx = afr_index_for_transaction_type (AFR_ENTRY_TRANSACTION);
         else
                 idx = afr_index_for_transaction_type (AFR_DATA_TRANSACTION);
@@ -1380,7 +1373,7 @@ out:
 
 int
 afr_sh_entry_impunge_mknod (call_frame_t *impunge_frame, xlator_t *this,
-			    int child_index, struct stat *stbuf)
+			    int child_index, struct iatt *stbuf)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1401,7 +1394,8 @@ afr_sh_entry_impunge_mknod (call_frame_t *impunge_frame, xlator_t *this,
 			   priv->children[child_index],
 			   priv->children[child_index]->fops->mknod,
 			   &impunge_local->loc,
-			   stbuf->st_mode, stbuf->st_rdev);
+			   st_mode_from_ia (stbuf->ia_prot, stbuf->ia_type),
+                           stbuf->ia_rdev);
 
 	return 0;
 }
@@ -1410,7 +1404,7 @@ afr_sh_entry_impunge_mknod (call_frame_t *impunge_frame, xlator_t *this,
 
 int
 afr_sh_entry_impunge_mkdir (call_frame_t *impunge_frame, xlator_t *this,
-			    int child_index, struct stat *stbuf)
+			    int child_index, struct iatt *stbuf)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1430,7 +1424,8 @@ afr_sh_entry_impunge_mkdir (call_frame_t *impunge_frame, xlator_t *this,
 			   (void *) (long) child_index,
 			   priv->children[child_index],
 			   priv->children[child_index]->fops->mkdir,
-			   &impunge_local->loc, stbuf->st_mode);
+			   &impunge_local->loc,
+                           st_mode_from_ia (stbuf->ia_prot, stbuf->ia_type));
 
 	return 0;
 }
@@ -1468,8 +1463,8 @@ int
 afr_sh_entry_impunge_symlink_unlink_cbk (call_frame_t *impunge_frame,
                                          void *cookie, xlator_t *this,
                                          int32_t op_ret, int32_t op_errno,
-                                         struct stat *preparent,
-                                         struct stat *postparent)
+                                         struct iatt *preparent,
+                                         struct iatt *postparent)
 {
         afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1547,7 +1542,7 @@ int
 afr_sh_entry_impunge_readlink_sink_cbk (call_frame_t *impunge_frame, void *cookie,
                                         xlator_t *this,
                                         int32_t op_ret, int32_t op_errno,
-                                        const char *linkname, struct stat *sbuf)
+                                        const char *linkname, struct iatt *sbuf)
 {
         afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1646,7 +1641,7 @@ int
 afr_sh_entry_impunge_readlink_cbk (call_frame_t *impunge_frame, void *cookie,
 				   xlator_t *this,
 				   int32_t op_ret, int32_t op_errno,
-				   const char *linkname, struct stat *sbuf)
+				   const char *linkname, struct iatt *sbuf)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1697,7 +1692,7 @@ out:
 
 int
 afr_sh_entry_impunge_readlink (call_frame_t *impunge_frame, xlator_t *this,
-			       int child_index, struct stat *stbuf)
+			       int child_index, struct iatt *stbuf)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1723,8 +1718,8 @@ int
 afr_sh_entry_impunge_recreate_lookup_cbk (call_frame_t *impunge_frame,
 					  void *cookie, xlator_t *this,
 					  int32_t op_ret, int32_t op_errno,
-					  inode_t *inode, struct stat *buf,
-					  dict_t *xattr,struct stat *postparent)
+					  inode_t *inode, struct iatt *buf,
+					  dict_t *xattr,struct iatt *postparent)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1757,7 +1752,7 @@ afr_sh_entry_impunge_recreate_lookup_cbk (call_frame_t *impunge_frame,
         impunge_sh->parentbuf = *postparent;
 
 	impunge_local->cont.lookup.buf = *buf;
-	type = (buf->st_mode & S_IFMT);
+	type = buf->ia_type;
 
 	switch (type) {
 	case S_IFSOCK:
@@ -1834,8 +1829,8 @@ int
 afr_sh_entry_impunge_entry_cbk (call_frame_t *impunge_frame, void *cookie,
 				xlator_t *this,
 				int32_t op_ret,	int32_t op_errno,
-                                inode_t *inode, struct stat *buf, dict_t *x,
-                                struct stat *postparent)
+                                inode_t *inode, struct iatt *buf, dict_t *x,
+                                struct iatt *postparent)
 {
 	afr_private_t   *priv = NULL;
 	afr_local_t     *impunge_local = NULL;
@@ -1953,7 +1948,8 @@ afr_sh_entry_impunge_entry (call_frame_t *frame, xlator_t *this,
 	impunge_sh->sh_frame = frame;
 	impunge_sh->active_source = active_src;
 
-        impunge_sh->impunging_entry_mode = entry->d_stat.st_mode;
+        impunge_sh->impunging_entry_mode =
+                st_mode_from_ia (entry->d_stat.ia_prot, entry->d_stat.ia_type);
 
 	ret = build_child_loc (this, &impunge_local->loc, &local->loc, entry->d_name);
 	if (ret != 0) {
@@ -2357,8 +2353,8 @@ heal:
 int
 afr_sh_entry_lookup_cbk (call_frame_t *frame, void *cookie,
 			 xlator_t *this, int32_t op_ret, int32_t op_errno,
-                         inode_t *inode, struct stat *buf, dict_t *xattr,
-                         struct stat *postparent)
+                         inode_t *inode, struct iatt *buf, dict_t *xattr,
+                         struct iatt *postparent)
 {
 	afr_private_t   *priv  = NULL;
 	afr_local_t     *local = NULL;
diff --git a/xlators/cluster/afr/src/afr-self-heal-metadata.c b/xlators/cluster/afr/src/afr-self-heal-metadata.c
index bddccf682..57408cfa6 100644
--- a/xlators/cluster/afr/src/afr-self-heal-metadata.c
+++ b/xlators/cluster/afr/src/afr-self-heal-metadata.c
@@ -81,7 +81,7 @@ afr_sh_metadata_done (call_frame_t *frame, xlator_t *this)
 			local->loc.path);
 		sh->completion_cbk (frame, this);
 	} else {
-		if (S_ISREG (sh->mode)) {
+		if (IA_ISREG (sh->type)) {
 			gf_log (this->name, GF_LOG_TRACE,
 				"proceeding to data check on %s",
 				local->loc.path);
@@ -89,7 +89,7 @@ afr_sh_metadata_done (call_frame_t *frame, xlator_t *this)
 			return 0;
 		}
 
-		if (S_ISDIR (sh->mode)) {
+		if (IA_ISDIR (sh->type)) {
 			gf_log (this->name, GF_LOG_TRACE,
 				"proceeding to entry check on %s",
 				local->loc.path);
@@ -321,7 +321,7 @@ afr_sh_metadata_sync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 int
 afr_sh_metadata_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                              int32_t op_ret, int32_t op_errno,
-                             struct stat *preop, struct stat *postop)
+                             struct iatt *preop, struct iatt *postop)
 {
 	afr_sh_metadata_sync_cbk (frame, cookie, this, op_ret, op_errno);
 
@@ -350,7 +350,7 @@ afr_sh_metadata_sync (call_frame_t *frame, xlator_t *this, dict_t *xattr)
 	int              call_count = 0;
 	int              i = 0;
 
-        struct stat      stbuf;
+        struct iatt      stbuf;
         int32_t          valid = 0;
 
 	local = frame->local;
@@ -370,22 +370,16 @@ afr_sh_metadata_sync (call_frame_t *frame, xlator_t *this, dict_t *xattr)
 
 	local->call_count = call_count;
 
-#ifdef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
-	stbuf.st_atim = sh->buf[source].st_atim;
-	stbuf.st_mtim = sh->buf[source].st_mtim;
-        
-#elif HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
-	stbuf.st_atimespec = sh->buf[source].st_atimespec;
-	stbuf.st_mtimespec = sh->buf[source].st_mtimespec;
-#else
-	stbuf.st_atime = sh->buf[source].st_atime;
-	stbuf.st_mtime = sh->buf[source].st_mtime;
-#endif
+	stbuf.ia_atime = sh->buf[source].ia_atime;
+	stbuf.ia_atime_nsec = sh->buf[source].ia_atime_nsec;
+	stbuf.ia_mtime = sh->buf[source].ia_mtime;
+	stbuf.ia_mtime_nsec = sh->buf[source].ia_mtime_nsec;
 
-        stbuf.st_uid = sh->buf[source].st_uid;
-        stbuf.st_gid = sh->buf[source].st_gid;
+        stbuf.ia_uid = sh->buf[source].ia_uid;
+        stbuf.ia_gid = sh->buf[source].ia_gid;
 
-        stbuf.st_mode = sh->buf[source].st_mode;
+        stbuf.ia_type = sh->buf[source].ia_type;
+        stbuf.ia_prot = sh->buf[source].ia_prot;
         
         valid = GF_SET_ATTR_MODE  | 
                 GF_SET_ATTR_UID   | GF_SET_ATTR_GID |
@@ -604,8 +598,8 @@ afr_sh_metadata_fix (call_frame_t *frame, xlator_t *this)
 int
 afr_sh_metadata_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			    int32_t op_ret, int32_t op_errno,
-                            inode_t *inode, struct stat *buf, dict_t *xattr,
-                            struct stat *postparent)
+                            inode_t *inode, struct iatt *buf, dict_t *xattr,
+                            struct iatt *postparent)
 {
 	afr_local_t     *local = NULL;
 	afr_self_heal_t *sh = NULL;
@@ -627,7 +621,7 @@ afr_sh_metadata_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 				"path %s on subvolume %s is of mode 0%o",
 				local->loc.path,
 				priv->children[child_index]->name,
-				buf->st_mode);
+				buf->ia_type);
 
 			sh->buf[child_index] = *buf;
 			if (xattr)
diff --git a/xlators/cluster/afr/src/afr-self-heal.h b/xlators/cluster/afr/src/afr-self-heal.h
index 1c2743a48..c43473a43 100644
--- a/xlators/cluster/afr/src/afr-self-heal.h
+++ b/xlators/cluster/afr/src/afr-self-heal.h
@@ -22,12 +22,12 @@
 
 #include <sys/stat.h>
 
-#define FILETYPE_DIFFERS(buf1,buf2) ((S_IFMT & ((struct stat *)buf1)->st_mode) != (S_IFMT & ((struct stat *)buf2)->st_mode))
-#define PERMISSION_DIFFERS(buf1,buf2) ((((struct stat *)buf1)->st_mode) != (((struct stat *)buf2)->st_mode))
-#define OWNERSHIP_DIFFERS(buf1,buf2) ((((struct stat *)buf1)->st_uid) != (((struct stat *)buf2)->st_uid) || (((struct stat *)buf1)->st_gid != (((struct stat *)buf2)->st_gid)))
-#define SIZE_DIFFERS(buf1,buf2) ((((struct stat *)buf1)->st_size) != (((struct stat *)buf2)->st_size))
+#define FILETYPE_DIFFERS(buf1,buf2) ((buf1)->ia_type != (buf2)->ia_type)
+#define PERMISSION_DIFFERS(buf1,buf2) (st_mode_from_ia ((buf1)->ia_prot, (buf1)->ia_type) != st_mode_from_ia ((buf2)->ia_prot, (buf2)->ia_type))
+#define OWNERSHIP_DIFFERS(buf1,buf2) (((buf1)->ia_uid != (buf2)->ia_uid) || ((buf1)->ia_gid != (buf2)->ia_gid))
+#define SIZE_DIFFERS(buf1,buf2) ((buf1)->ia_size != (buf2)->ia_size)
 
-#define SIZE_GREATER(buf1,buf2) ((((struct stat *)buf1)->st_size > (((struct stat *)buf2)->st_size)))
+#define SIZE_GREATER(buf1,buf2) ((buf1)->ia_size > (buf2)->ia_size)
 
 int
 afr_sh_has_metadata_pending (dict_t *xattr, int child_count, xlator_t *this);
diff --git a/xlators/cluster/afr/src/afr.c b/xlators/cluster/afr/src/afr.c
index f4917929c..b7fbbd09c 100644
--- a/xlators/cluster/afr/src/afr.c
+++ b/xlators/cluster/afr/src/afr.c
@@ -551,8 +551,8 @@ afr_lookup_collect_xattr (afr_local_t *local, xlator_t *this,
 
 
 static void
-afr_lookup_self_heal_check (afr_local_t *local, struct stat *buf,
-                            struct stat *lookup_buf)
+afr_lookup_self_heal_check (afr_local_t *local, struct iatt *buf,
+                            struct iatt *lookup_buf)
 {
         if (FILETYPE_DIFFERS (buf, lookup_buf)) {
                 /* mismatching filetypes with same name
@@ -576,7 +576,7 @@ afr_lookup_self_heal_check (afr_local_t *local, struct stat *buf,
         }
 
         if (SIZE_DIFFERS (buf, lookup_buf)
-            && S_ISREG (buf->st_mode)) {
+            && IA_ISREG (buf->ia_type)) {
                 local->self_heal.need_data_self_heal = _gf_true;
         }
 
@@ -584,7 +584,7 @@ afr_lookup_self_heal_check (afr_local_t *local, struct stat *buf,
 
 
 static void
-afr_lookup_done (call_frame_t *frame, xlator_t *this, struct stat *lookup_buf)
+afr_lookup_done (call_frame_t *frame, xlator_t *this, struct iatt *lookup_buf)
 {
         int unwind = 1;
         int source = -1;
@@ -593,20 +593,20 @@ afr_lookup_done (call_frame_t *frame, xlator_t *this, struct stat *lookup_buf)
 
         local = frame->local;
 
-        local->cont.lookup.postparent.st_ino  = local->cont.lookup.parent_ino;
+        local->cont.lookup.postparent.ia_ino  = local->cont.lookup.parent_ino;
 
         if (local->cont.lookup.ino) {
-                local->cont.lookup.buf.st_ino = local->cont.lookup.ino;
-                local->cont.lookup.buf.st_dev = local->cont.lookup.gen;
+                local->cont.lookup.buf.ia_ino = local->cont.lookup.ino;
+                local->cont.lookup.buf.ia_gen = local->cont.lookup.gen;
         }
 
         if (local->op_ret == 0) {
                 /* KLUDGE: assuming DHT will not itransform in 
                    revalidate */
                 if (local->cont.lookup.inode->ino) {
-                        local->cont.lookup.buf.st_ino = 
+                        local->cont.lookup.buf.ia_ino = 
                                 local->cont.lookup.inode->ino;
-                        local->cont.lookup.buf.st_dev =
+                        local->cont.lookup.buf.ia_gen =
                                 local->cont.lookup.inode->generation;
                 }
         }
@@ -638,7 +638,7 @@ afr_lookup_done (call_frame_t *frame, xlator_t *this, struct stat *lookup_buf)
                            So just make a best effort to set the read-subvolume
                            and return */
 
-                        if (S_ISREG (local->cont.lookup.inode->st_mode)) {
+                        if (IA_ISREG (local->cont.lookup.inode->ia_type)) {
                                 source = afr_self_heal_get_source (this, local, local->cont.lookup.xattrs);
 
                                 if (source >= 0) {
@@ -648,14 +648,14 @@ afr_lookup_done (call_frame_t *frame, xlator_t *this, struct stat *lookup_buf)
                                 }
                         }
                 } else {
-                        if (!local->cont.lookup.inode->st_mode) {
+                        if (!local->cont.lookup.inode->ia_type) {
                                 /* fix for RT #602 */
-                                local->cont.lookup.inode->st_mode =
-                                        lookup_buf->st_mode;
+                                local->cont.lookup.inode->ia_type =
+                                        lookup_buf->ia_type;
                         }
 
                         local->self_heal.background = _gf_true;
-                        local->self_heal.mode       = local->cont.lookup.buf.st_mode;
+                        local->self_heal.type       = local->cont.lookup.buf.ia_type;
                         local->self_heal.unwind     = afr_self_heal_lookup_unwind;
 
                         unwind = 0;
@@ -704,12 +704,12 @@ __error_more_important (int32_t old_errno, int32_t new_errno)
 int
 afr_fresh_lookup_cbk (call_frame_t *frame, void *cookie,
                       xlator_t *this,  int32_t op_ret,	int32_t op_errno,
-                      inode_t *inode,	struct stat *buf, dict_t *xattr,
-                      struct stat *postparent)
+                      inode_t *inode,	struct iatt *buf, dict_t *xattr,
+                      struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
-	struct stat *   lookup_buf = NULL;
+	struct iatt *   lookup_buf = NULL;
 
 	int             call_count      = -1;
 	int             child_index     = -1;
@@ -744,10 +744,10 @@ afr_fresh_lookup_cbk (call_frame_t *frame, void *cookie,
 
                 if (child_index == first_up_child) {
                         local->cont.lookup.ino = 
-                                afr_itransform (buf->st_ino,
+                                afr_itransform (buf->ia_ino,
                                                 priv->child_count,
                                                 first_up_child);
-                        local->cont.lookup.gen = buf->st_dev;
+                        local->cont.lookup.gen = buf->ia_gen;
                 }
 
 		if (local->success_count == 0) {
@@ -761,7 +761,7 @@ afr_fresh_lookup_cbk (call_frame_t *frame, void *cookie,
 
                         *lookup_buf = *buf;
 
-                        lookup_buf->st_ino = afr_itransform (buf->st_ino,
+                        lookup_buf->ia_ino = afr_itransform (buf->ia_ino,
                                                              priv->child_count,
                                                              child_index);
                         if (priv->read_child >= 0) {
@@ -824,12 +824,12 @@ unlock:
 int
 afr_revalidate_lookup_cbk (call_frame_t *frame, void *cookie,
                            xlator_t *this, int32_t op_ret, int32_t op_errno,
-                           inode_t *inode, struct stat *buf, dict_t *xattr,
-                           struct stat *postparent)
+                           inode_t *inode, struct iatt *buf, dict_t *xattr,
+                           struct iatt *postparent)
 {
 	afr_local_t *   local = NULL;
 	afr_private_t * priv  = NULL;
-	struct stat *   lookup_buf = NULL;
+	struct iatt *   lookup_buf = NULL;
         
 	int             call_count      = -1;
 	int             child_index     = -1;
@@ -864,10 +864,10 @@ afr_revalidate_lookup_cbk (call_frame_t *frame, void *cookie,
 
                 if (child_index == first_up_child) {
                         local->cont.lookup.ino = 
-                                afr_itransform (buf->st_ino,
+                                afr_itransform (buf->ia_ino,
                                                 priv->child_count,
                                                 first_up_child);
-                        local->cont.lookup.gen = buf->st_dev;
+                        local->cont.lookup.gen = buf->ia_gen;
                 }
 
 		/* in case of revalidate, we need to send stat of the
@@ -889,7 +889,7 @@ afr_revalidate_lookup_cbk (call_frame_t *frame, void *cookie,
 
 			*lookup_buf = *buf;
 
-                        lookup_buf->st_ino = afr_itransform (buf->st_ino,
+                        lookup_buf->ia_ino = afr_itransform (buf->ia_ino,
                                                              priv->child_count,
                                                              child_index);
 
@@ -1460,8 +1460,8 @@ out:
 
 int
 afr_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-               int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-               struct stat *postbuf)
+               int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+               struct iatt *postbuf)
 {
 	afr_local_t *local = NULL;
 	
@@ -1503,8 +1503,8 @@ afr_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	call_count = afr_frame_return (frame);
 
 	if (call_count == 0) {
-                local->cont.fsync.prebuf.st_ino  = local->cont.fsync.ino;
-                local->cont.fsync.postbuf.st_ino = local->cont.fsync.ino;
+                local->cont.fsync.prebuf.ia_ino  = local->cont.fsync.ino;
+                local->cont.fsync.postbuf.ia_ino = local->cont.fsync.ino;
 
 		AFR_STACK_UNWIND (fsync, frame, local->op_ret, local->op_errno,
                                   &local->cont.fsync.prebuf,
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index a5c75add7..589d5dffc 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -97,7 +97,7 @@ typedef struct {
         gf_boolean_t background;          /* do self-heal in background
                                              if possible */
 
-        mode_t mode;                      /* st_mode of the entry we're doing
+        ia_type_t type;                   /* st_mode of the entry we're doing
                                              self-heal on */
 
         /* Function to call to unwind. If self-heal is being done in the
@@ -109,8 +109,8 @@ typedef struct {
 
 
 	/* array of stat's, one for each child */
-	struct stat *buf;
-        struct stat parentbuf;
+	struct iatt *buf;
+        struct iatt parentbuf;
 
 	/* array of xattr's, one for each child */
 	dict_t **xattr;
@@ -251,9 +251,9 @@ typedef struct _afr_local {
 
 		struct {
 			inode_t *inode;
-			struct stat buf;
-                        struct stat read_child_buf;
-                        struct stat postparent;
+			struct iatt buf;
+                        struct iatt read_child_buf;
+                        struct iatt postparent;
                         ino_t ino;
                         uint64_t gen;
                         ino_t parent_ino;
@@ -348,8 +348,8 @@ typedef struct _afr_local {
 
 		struct {
 			ino_t ino;
-			struct stat prebuf;
-			struct stat postbuf;
+			struct iatt prebuf;
+			struct iatt postbuf;
 
 			int32_t op_ret;
 
@@ -361,38 +361,38 @@ typedef struct _afr_local {
 
                 struct {
                         ino_t ino;
-                        struct stat prebuf;
-                        struct stat postbuf;
+                        struct iatt prebuf;
+                        struct iatt postbuf;
                 } fsync;
 
 		struct {
 			ino_t ino;
 			off_t offset;
-			struct stat prebuf;
-                        struct stat postbuf;
+			struct iatt prebuf;
+                        struct iatt postbuf;
 		} truncate;
 
 		struct {
 			ino_t ino;
 			off_t offset;
-			struct stat prebuf;
-                        struct stat postbuf;
+			struct iatt prebuf;
+                        struct iatt postbuf;
 		} ftruncate;
 
 		struct {
 			ino_t ino;
-			struct stat in_buf;
+			struct iatt in_buf;
                         int32_t valid;
-                        struct stat preop_buf;
-                        struct stat postop_buf;
+                        struct iatt preop_buf;
+                        struct iatt postop_buf;
 		} setattr;
 
 		struct {
 			ino_t ino;
-			struct stat in_buf;
+			struct iatt in_buf;
                         int32_t valid;
-                        struct stat preop_buf;
-                        struct stat postop_buf;
+                        struct iatt preop_buf;
+                        struct iatt postop_buf;
 		} fsetattr;
 
 		struct {
@@ -414,10 +414,10 @@ typedef struct _afr_local {
 			int32_t flags;
 			mode_t mode;
 			inode_t *inode;
-			struct stat buf;
-                        struct stat preparent;
-                        struct stat postparent;
-                        struct stat read_child_buf;
+			struct iatt buf;
+                        struct iatt preparent;
+                        struct iatt postparent;
+                        struct iatt read_child_buf;
 		} create;
 
 		struct {
@@ -427,10 +427,10 @@ typedef struct _afr_local {
 			dev_t dev;
 			mode_t mode;
 			inode_t *inode;
-			struct stat buf;
-                        struct stat preparent;
-                        struct stat postparent;
-                        struct stat read_child_buf;
+			struct iatt buf;
+                        struct iatt preparent;
+                        struct iatt postparent;
+                        struct iatt read_child_buf;
 		} mknod;
 
 		struct {
@@ -439,38 +439,38 @@ typedef struct _afr_local {
                         ino_t parent_ino;
 			int32_t mode;
 			inode_t *inode;
-			struct stat buf;
-                        struct stat read_child_buf;
-                        struct stat preparent;
-                        struct stat postparent;
+			struct iatt buf;
+                        struct iatt read_child_buf;
+                        struct iatt preparent;
+                        struct iatt postparent;
 		} mkdir;
 
 		struct {
                         ino_t parent_ino;
 			int32_t op_ret;
 			int32_t op_errno;
-                        struct stat preparent;
-                        struct stat postparent;
+                        struct iatt preparent;
+                        struct iatt postparent;
 		} unlink;
 
 		struct {
                         ino_t parent_ino;
 			int32_t op_ret;
 			int32_t op_errno;
-                        struct stat preparent;
-                        struct stat postparent;
+                        struct iatt preparent;
+                        struct iatt postparent;
 		} rmdir;
 
 		struct {
                         ino_t oldparent_ino;
                         ino_t newparent_ino;
 			ino_t ino;
-			struct stat buf;
-                        struct stat read_child_buf;
-                        struct stat preoldparent;
-                        struct stat prenewparent;
-                        struct stat postoldparent;
-                        struct stat postnewparent;
+			struct iatt buf;
+                        struct iatt read_child_buf;
+                        struct iatt preoldparent;
+                        struct iatt prenewparent;
+                        struct iatt postoldparent;
+                        struct iatt postnewparent;
 		} rename;
 
 		struct {
@@ -478,10 +478,10 @@ typedef struct _afr_local {
                         uint64_t gen;
                         ino_t parent_ino;
 			inode_t *inode;
-			struct stat buf;
-                        struct stat read_child_buf;
-                        struct stat preparent;
-                        struct stat postparent;
+			struct iatt buf;
+                        struct iatt read_child_buf;
+                        struct iatt preparent;
+                        struct iatt postparent;
 		} link;
 
 		struct {
@@ -489,11 +489,11 @@ typedef struct _afr_local {
                         uint64_t gen;
                         ino_t parent_ino;
 			inode_t *inode;
-			struct stat buf;
-                        struct stat read_child_buf;
+			struct iatt buf;
+                        struct iatt read_child_buf;
 			char *linkpath;
-                        struct stat preparent;
-                        struct stat postparent;
+                        struct iatt preparent;
+                        struct iatt postparent;
 		} symlink;
 
 		struct {
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 6f0ab4ae5..1ee723d9c 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -59,8 +59,8 @@ dht_lookup_selfheal_cbk (call_frame_t *frame, void *cookie,
 		layout = local->selfheal.layout;
 		ret = dht_layout_set (this, local->inode, layout);
 
-		if (local->st_ino) {
-			local->stbuf.st_ino = local->st_ino;
+		if (local->ia_ino) {
+			local->stbuf.ia_ino = local->ia_ino;
 		} else {
 			gf_log (this->name, GF_LOG_DEBUG,
 				"could not find hashed subvolume for %s",
@@ -68,7 +68,7 @@ dht_lookup_selfheal_cbk (call_frame_t *frame, void *cookie,
 		}
 
                 if (local->loc.parent)
-                        local->postparent.st_ino = local->loc.parent->ino;
+                        local->postparent.ia_ino = local->loc.parent->ino;
 	}
 
         WIPE (&local->postparent);
@@ -83,8 +83,8 @@ dht_lookup_selfheal_cbk (call_frame_t *frame, void *cookie,
 int
 dht_lookup_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                     int op_ret, int op_errno,
-                    inode_t *inode, struct stat *stbuf, dict_t *xattr,
-                    struct stat *postparent)
+                    inode_t *inode, struct iatt *stbuf, dict_t *xattr,
+                    struct iatt *postparent)
 {
 	dht_conf_t   *conf                    = NULL;
         dht_local_t  *local                   = NULL;
@@ -125,7 +125,7 @@ dht_lookup_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         gf_log (this->name, GF_LOG_DEBUG,
                                 "lookup of %s on %s returned non dir 0%o",
                                 local->loc.path, prev->this->name,
-                                stbuf->st_mode);
+                                stbuf->ia_type);
                         local->need_selfheal = 1;
  			goto unlock;
                 }
@@ -136,13 +136,13 @@ dht_lookup_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
  		if (local->inode == NULL)
  			local->inode = inode_ref (inode);
 
-		dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
-                dht_stat_merge (this, &local->postparent, postparent,
+		dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
+                dht_iatt_merge (this, &local->postparent, postparent,
                                 prev->this);
 
                 if (prev->this == dht_first_up_subvol (this)) {
-			local->st_ino = local->stbuf.st_ino;
-                        local->st_dev = local->stbuf.st_dev;
+			local->ia_ino = local->stbuf.ia_ino;
+                        local->ia_gen = local->stbuf.ia_gen;
                 }
 
         }
@@ -171,9 +171,9 @@ unlock:
 			
 			dht_layout_set (this, local->inode, layout);
 			
-			if (local->st_ino) {
-				local->stbuf.st_ino = local->st_ino;
-                                local->stbuf.st_dev = local->st_dev;
+			if (local->ia_ino) {
+				local->stbuf.ia_ino = local->ia_ino;
+                                local->stbuf.ia_gen = local->ia_gen;
 			} else {
 				gf_log (this->name, GF_LOG_DEBUG,
 					"could not find hashed subvol for %s",
@@ -181,7 +181,7 @@ unlock:
 			}
 
                         if (local->loc.parent)
-                                local->postparent.st_ino =
+                                local->postparent.ia_ino =
                                         local->loc.parent->ino;
 		}
 
@@ -203,8 +203,8 @@ selfheal:
 int
 dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                     int op_ret, int op_errno,
-                    inode_t *inode, struct stat *stbuf, dict_t *xattr,
-                    struct stat *postparent)
+                    inode_t *inode, struct iatt *stbuf, dict_t *xattr,
+                    struct iatt *postparent)
 {
         dht_local_t  *local         = NULL;
         int           this_call_cnt = 0;
@@ -242,11 +242,10 @@ dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			goto unlock;
 		}
 
-		if (S_IFMT & (stbuf->st_mode ^ local->inode->st_mode)) {
+		if (stbuf->ia_type != local->inode->ia_type) {
 			gf_log (this->name, GF_LOG_DEBUG,
 				"mismatching filetypes 0%o v/s 0%o for %s",
-				(stbuf->st_mode & S_IFMT),
-				(local->inode->st_mode & S_IFMT),
+				(stbuf->ia_type), (local->inode->ia_type),
 				local->loc.path);
 
 			local->op_ret = -1;
@@ -284,16 +283,16 @@ dht_revalidate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			}
 		} 
 		
-		dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
-                dht_stat_merge (this, &local->postparent, postparent,
+		dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
+                dht_iatt_merge (this, &local->postparent, postparent,
                                 prev->this);
 		
 		local->op_ret = 0;
-		local->stbuf.st_ino = local->st_ino;
-                local->stbuf.st_dev = local->loc.inode->generation;
+		local->stbuf.ia_ino = local->ia_ino;
+                local->stbuf.ia_gen = local->loc.inode->generation;
 
                 if (local->loc.parent)
-                        local->postparent.st_ino = local->loc.parent->ino;
+                        local->postparent.ia_ino = local->loc.parent->ino;
 
 		if (!local->xattr)
 			local->xattr = dict_ref (xattr);
@@ -304,11 +303,11 @@ unlock:
         this_call_cnt = dht_frame_return (frame);
 
         if (is_last_call (this_call_cnt)) {
-		if (!S_ISDIR (local->stbuf.st_mode)
+		if (!IA_ISDIR (local->stbuf.ia_type)
 		    && (local->hashed_subvol != local->cached_subvol)
-		    && (local->stbuf.st_nlink == 1)
+		    && (local->stbuf.ia_nlink == 1)
 		    && (conf->unhashed_sticky_bit)) {
-			local->stbuf.st_mode |= S_ISVTX;
+			local->stbuf.ia_prot.sticky = 1;
 		}
 
 		if (local->layout_mismatch) {
@@ -331,8 +330,8 @@ int
 dht_lookup_linkfile_create_cbk (call_frame_t *frame, void *cookie,
 				xlator_t *this,
 				int32_t op_ret, int32_t op_errno,
-                                inode_t *inode, struct stat *stbuf,
-                                struct stat *preparent, struct stat *postparent)
+                                inode_t *inode, struct iatt *stbuf,
+                                struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	xlator_t     *cached_subvol = NULL;
@@ -354,13 +353,13 @@ dht_lookup_linkfile_create_cbk (call_frame_t *frame, void *cookie,
         }
 
 	local->op_ret = 0;
-	if ((local->stbuf.st_nlink == 1)
+	if ((local->stbuf.ia_nlink == 1)
 	    && (conf->unhashed_sticky_bit)) {
-		local->stbuf.st_mode |= S_ISVTX;
+		local->stbuf.ia_prot.sticky = 1;
 	}
 
         if (local->loc.parent)
-                local->postparent.st_ino = local->loc.parent->ino;
+                local->postparent.ia_ino = local->loc.parent->ino;
 
 unwind:
         WIPE (&local->postparent);
@@ -375,8 +374,8 @@ unwind:
 int
 dht_lookup_everywhere_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			   int32_t op_ret, int32_t op_errno,
-                           inode_t *inode, struct stat *buf, dict_t *xattr,
-                           struct stat *postparent)
+                           inode_t *inode, struct iatt *buf, dict_t *xattr,
+                           struct iatt *postparent)
 {
 	dht_conf_t   *conf          = NULL;
         dht_local_t  *local         = NULL;
@@ -431,7 +430,7 @@ dht_lookup_everywhere_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
                         if (!local->cached_subvol) {
                                 /* found one file */
-                                dht_stat_merge (this, &local->stbuf, buf,
+                                dht_iatt_merge (this, &local->stbuf, buf,
                                                 subvol);
                                 local->xattr = dict_ref (xattr);
                                 local->cached_subvol = subvol;
@@ -439,7 +438,7 @@ dht_lookup_everywhere_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                         "found on %s file %s",
                                         subvol->name, loc->path);
                                 
-                                dht_stat_merge (this, &local->postparent,
+                                dht_iatt_merge (this, &local->postparent,
                                                 postparent, subvol);
                         } else {
                                 gf_log (this->name, GF_LOG_DEBUG,
@@ -507,7 +506,7 @@ unlock:
                         }
 
                         if (local->loc.parent)
-                                local->postparent.st_ino =
+                                local->postparent.ia_ino =
                                         local->loc.parent->ino;
 
                         WIPE (&local->postparent);
@@ -564,8 +563,8 @@ dht_lookup_everywhere (call_frame_t *frame, xlator_t *this, loc_t *loc)
 int
 dht_lookup_linkfile_cbk (call_frame_t *frame, void *cookie,
                          xlator_t *this, int op_ret, int op_errno,
-                         inode_t *inode, struct stat *stbuf, dict_t *xattr,
-                         struct stat *postparent)
+                         inode_t *inode, struct iatt *stbuf, dict_t *xattr,
+                         struct iatt *postparent)
 {
         call_frame_t *prev          = NULL;
 	dht_local_t  *local         = NULL;
@@ -601,13 +600,13 @@ dht_lookup_linkfile_cbk (call_frame_t *frame, void *cookie,
                 goto err;
         }
 
-	if ((stbuf->st_nlink == 1)
+	if ((stbuf->ia_nlink == 1)
 	    && (conf->unhashed_sticky_bit)) {
-		stbuf->st_mode |= S_ISVTX;
+		stbuf->ia_prot.sticky = 1;
 	}
-        dht_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino);
+        dht_itransform (this, prev->this, stbuf->ia_ino, &stbuf->ia_ino);
         if (local->loc.parent)
-                postparent->st_ino = local->loc.parent->ino;
+                postparent->ia_ino = local->loc.parent->ino;
         
 	ret = dht_layout_preset (this, prev->this, inode);
 	if (ret < 0) {
@@ -669,8 +668,8 @@ dht_lookup_directory (call_frame_t *frame, xlator_t *this, loc_t *loc)
 int
 dht_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 int op_ret, int op_errno,
-                inode_t *inode, struct stat *stbuf, dict_t *xattr,
-                struct stat *postparent)
+                inode_t *inode, struct iatt *stbuf, dict_t *xattr,
+                struct iatt *postparent)
 {
         char          is_linkfile   = 0;
         char          is_dir        = 0;
@@ -729,10 +728,10 @@ dht_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         if (!is_dir && !is_linkfile) {
                 /* non-directory and not a linkfile */
 
-		dht_itransform (this, prev->this, stbuf->st_ino,
-				&stbuf->st_ino);
+		dht_itransform (this, prev->this, stbuf->ia_ino,
+				&stbuf->ia_ino);
                 if (loc->parent)
-                        postparent->st_ino = loc->parent->ino;
+                        postparent->ia_ino = loc->parent->ino;
 
 		ret = dht_layout_preset (this, prev->this, inode);
 		if (ret < 0) {
@@ -766,10 +765,10 @@ dht_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 out:
         /* 
-         * FIXME: postparent->st_size and postparent->st_blocks do not have 
+         * FIXME: postparent->ia_size and postparent->st_blocks do not have 
          * correct values. since, postparent corresponds to a directory these 
          * two members should have values equal to sum of corresponding values
-         * from each of the subvolume. See dht_stat_merge for reference.
+         * from each of the subvolume. See dht_iatt_merge for reference.
          */
 
         WIPE (postparent);
@@ -855,7 +854,7 @@ dht_lookup (call_frame_t *frame, xlator_t *this,
 		}
 
 		local->inode    = inode_ref (loc->inode);
-		local->st_ino   = loc->inode->ino;
+		local->ia_ino   = loc->inode->ino;
 		
 		local->call_cnt = layout->cnt;
 		call_cnt = local->call_cnt;
@@ -927,8 +926,8 @@ err:
 
 int
 dht_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-	      int op_ret, int op_errno, struct stat *prebuf,
-              struct stat *postbuf)
+	      int op_ret, int op_errno, struct iatt *prebuf,
+              struct iatt *postbuf)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -948,12 +947,12 @@ dht_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			goto unlock;
 		}
 
-                dht_stat_merge (this, &local->prebuf, prebuf, prev->this);
-		dht_stat_merge (this, &local->stbuf, postbuf, prev->this);
+                dht_iatt_merge (this, &local->prebuf, prebuf, prev->this);
+		dht_iatt_merge (this, &local->stbuf, postbuf, prev->this);
 
 		if (local->inode) {
-			local->stbuf.st_ino = local->inode->ino;
-                        local->prebuf.st_ino = local->inode->ino;
+			local->stbuf.ia_ino = local->inode->ino;
+                        local->prebuf.ia_ino = local->inode->ino;
                 }
 
 		local->op_ret = 0;
@@ -973,7 +972,7 @@ unlock:
 
 int
 dht_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-	      int op_ret, int op_errno, struct stat *stbuf)
+	      int op_ret, int op_errno, struct iatt *stbuf)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -993,10 +992,10 @@ dht_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			goto unlock;
 		}
 
-		dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
+		dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
 		
 		if (local->inode)
-			local->stbuf.st_ino = local->inode->ino;
+			local->stbuf.ia_ino = local->inode->ino;
 		local->op_ret = 0;
 	}
 unlock:
@@ -1213,8 +1212,8 @@ err:
 
 int
 dht_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                int op_ret, int op_errno, struct stat *preparent,
-                struct stat *postparent)
+                int op_ret, int op_errno, struct iatt *preparent,
+                struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev  = NULL;
@@ -1233,8 +1232,8 @@ dht_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			goto unlock;
 		}
 
-                preparent->st_ino = local->loc.parent->ino;
-                postparent->st_ino = local->loc.parent->ino;
+                preparent->ia_ino = local->loc.parent->ino;
+                postparent->ia_ino = local->loc.parent->ino;
 		local->op_ret = 0;
 
                 local->postparent = *postparent;
@@ -1255,8 +1254,8 @@ unlock:
 
 int
 dht_unlink_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int op_ret, int op_errno, struct stat *preparent,
-                         struct stat *postparent)
+                         int op_ret, int op_errno, struct iatt *preparent,
+                         struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -1308,7 +1307,7 @@ err:
 
 int
 dht_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret,
-               int op_errno, struct stat *prebuf, struct stat *postbuf)
+               int op_errno, struct iatt *prebuf, struct iatt *postbuf)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -1334,8 +1333,8 @@ unlock:
 	UNLOCK (&frame->lock);
 
         if (local && (op_ret == 0)) {
-                prebuf->st_ino = local->st_ino;
-                postbuf->st_ino = local->st_ino;
+                prebuf->ia_ino = local->ia_ino;
+                postbuf->ia_ino = local->ia_ino;
         }
 
 	this_call_cnt = dht_frame_return (frame);
@@ -1433,7 +1432,7 @@ err:
 
 int
 dht_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		  int op_ret, int op_errno, const char *path, struct stat *sbuf)
+		  int op_ret, int op_errno, const char *path, struct iatt *sbuf)
 {
         dht_local_t *local = NULL;
 
@@ -1442,7 +1441,7 @@ dht_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 goto err;
 
         if (local) {
-                sbuf->st_ino = local->st_ino;
+                sbuf->ia_ino = local->ia_ino;
         } else {
                 op_ret = -1;
                 op_errno = EINVAL;
@@ -1485,7 +1484,7 @@ dht_readlink (call_frame_t *frame, xlator_t *this,
 		goto err;
 	}
 
-        local->st_ino = loc->inode->ino;
+        local->ia_ino = loc->inode->ino;
  
 	STACK_WIND (frame, dht_readlink_cbk,
 		    subvol, subvol->fops->readlink,
@@ -1735,7 +1734,7 @@ err:
 int
 dht_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	       int op_ret, int op_errno,
-	       struct iovec *vector, int count, struct stat *stbuf,
+	       struct iovec *vector, int count, struct iatt *stbuf,
                struct iobref *iobref)
 {
         dht_local_t     *local = frame->local;
@@ -1745,7 +1744,7 @@ dht_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 op_errno = EINVAL;
                 goto out;
         }
-        stbuf->st_ino = local->st_ino;
+        stbuf->ia_ino = local->ia_ino;
 out:
         DHT_STACK_UNWIND (readv, frame, op_ret, op_errno, vector, count, stbuf,
                           iobref);
@@ -1781,7 +1780,7 @@ dht_readv (call_frame_t *frame, xlator_t *this,
                 goto err;
         }
 
-        local->st_ino = fd->inode->ino;
+        local->ia_ino = fd->inode->ino;
 	STACK_WIND (frame, dht_readv_cbk,
 		    subvol, subvol->fops->readv,
 		    fd, size, off);
@@ -1798,8 +1797,8 @@ err:
 
 int
 dht_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		int op_ret, int op_errno, struct stat *prebuf,
-                struct stat *postbuf)
+		int op_ret, int op_errno, struct iatt *prebuf,
+                struct iatt *postbuf)
 {
         dht_local_t *local = NULL;
 
@@ -1814,8 +1813,8 @@ dht_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 goto out;
         } 
         
-        prebuf->st_ino = local->st_ino;
-        postbuf->st_ino = local->st_ino;
+        prebuf->ia_ino = local->ia_ino;
+        postbuf->ia_ino = local->ia_ino;
 
 out:
         DHT_STACK_UNWIND (writev, frame, op_ret, op_errno, prebuf, postbuf);
@@ -1853,7 +1852,7 @@ dht_writev (call_frame_t *frame, xlator_t *this,
                 goto err;
         }
 
-        local->st_ino = fd->inode->ino;
+        local->ia_ino = fd->inode->ino;
 
 	STACK_WIND (frame, dht_writev_cbk,
 		    subvol, subvol->fops->writev,
@@ -1943,7 +1942,7 @@ dht_fsync (call_frame_t *frame, xlator_t *this,
 	}
 	local->call_cnt = 1;
 
-        local->st_ino = fd->inode->ino;
+        local->ia_ino = fd->inode->ino;
 
 	STACK_WIND (frame, dht_fsync_cbk,
 		    subvol, subvol->fops->fsync,
@@ -2199,7 +2198,7 @@ dht_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret,
                 dht_itransform (this, prev->this, orig_entry->d_off,
                                 &entry->d_off);
 
-                entry->d_stat.st_ino = entry->d_ino;
+                entry->d_stat.ia_ino = entry->d_ino;
                 entry->d_type = orig_entry->d_type;
                 entry->d_len  = orig_entry->d_len;
 
@@ -2489,8 +2488,8 @@ err:
 int
 dht_newfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		 int op_ret, int op_errno,
-                 inode_t *inode, struct stat *stbuf, struct stat *preparent,
-                 struct stat *postparent)
+                 inode_t *inode, struct iatt *stbuf, struct iatt *preparent,
+                 struct iatt *postparent)
 {
 	call_frame_t *prev = NULL;
 	int           ret = -1;
@@ -2509,10 +2508,10 @@ dht_newfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 	prev = cookie;
 
-	dht_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino);
+	dht_itransform (this, prev->this, stbuf->ia_ino, &stbuf->ia_ino);
         if (local->loc.parent) {
-                preparent->st_ino = local->loc.parent->ino;
-                postparent->st_ino = local->loc.parent->ino;
+                preparent->ia_ino = local->loc.parent->ino;
+                postparent->ia_ino = local->loc.parent->ino;
 
                 WIPE (preparent);
                 WIPE (postparent);
@@ -2529,11 +2528,11 @@ dht_newfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	}
 out:
         /* 
-         * FIXME: st_size and st_blocks of preparent and postparent do not have 
+         * FIXME: ia_size and st_blocks of preparent and postparent do not have 
          * correct values. since, preparent and postparent buffers correspond
          * to a directory these two members should have values equal to sum of
          * corresponding values from each of the subvolume.
-         * See dht_stat_merge for reference.
+         * See dht_iatt_merge for reference.
          */ 
 
 	DHT_STACK_UNWIND (mknod, frame, op_ret, op_errno, inode, stbuf, preparent,
@@ -2545,8 +2544,8 @@ int
 dht_mknod_linkfile_create_cbk (call_frame_t *frame, void *cookie,
                                xlator_t *this,
                                int32_t op_ret, int32_t op_errno,
-                               inode_t *inode, struct stat *stbuf,
-                               struct stat *preparent, struct stat *postparent)
+                               inode_t *inode, struct iatt *stbuf,
+                               struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	xlator_t     *cached_subvol = NULL;
@@ -2775,8 +2774,8 @@ err:
 int
 dht_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	      int op_ret, int op_errno,
-              inode_t *inode, struct stat *stbuf, struct stat *preparent,
-              struct stat *postparent)
+              inode_t *inode, struct iatt *stbuf, struct iatt *preparent,
+              struct iatt *postparent)
 {
         call_frame_t *prev = NULL;
 	dht_layout_t *layout = NULL;
@@ -2798,10 +2797,10 @@ dht_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		goto out;
 	}
 
-	stbuf->st_ino = local->loc.inode->ino;
+	stbuf->ia_ino = local->loc.inode->ino;
 
-        preparent->st_ino = local->loc2.parent->ino;
-        postparent->st_ino = local->loc2.parent->ino;
+        preparent->ia_ino = local->loc2.parent->ino;
+        postparent->ia_ino = local->loc2.parent->ino;
 
         WIPE (preparent);
         WIPE (postparent);
@@ -2817,8 +2816,8 @@ out:
 int
 dht_link_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		       int op_ret, int op_errno,
-                       inode_t *inode, struct stat *stbuf,
-                       struct stat *preparent, struct stat *postparent)
+                       inode_t *inode, struct iatt *stbuf,
+                       struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	xlator_t     *srcvol = NULL;
@@ -2923,8 +2922,8 @@ err:
 int
 dht_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		 int op_ret, int op_errno,
-		 fd_t *fd, inode_t *inode, struct stat *stbuf,
-                 struct stat *preparent, struct stat *postparent)
+		 fd_t *fd, inode_t *inode, struct iatt *stbuf,
+                 struct iatt *preparent, struct iatt *postparent)
 {
 	call_frame_t *prev = NULL;
 	int           ret = -1;
@@ -2942,10 +2941,10 @@ dht_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 	prev = cookie;
 
-	dht_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino);
+	dht_itransform (this, prev->this, stbuf->ia_ino, &stbuf->ia_ino);
         if (local->loc.parent) {
-                preparent->st_ino = local->loc.parent->ino;
-                postparent->st_ino = local->loc.parent->ino;
+                preparent->ia_ino = local->loc.parent->ino;
+                postparent->ia_ino = local->loc.parent->ino;
 
                 WIPE (preparent);
                 WIPE (postparent);
@@ -2972,8 +2971,8 @@ int
 dht_create_linkfile_create_cbk (call_frame_t *frame, void *cookie,
 				xlator_t *this,
 				int32_t op_ret, int32_t op_errno,
-                                inode_t *inode, struct stat *stbuf,
-                                struct stat *preparent, struct stat *postparent)
+                                inode_t *inode, struct iatt *stbuf,
+                                struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	xlator_t     *cached_subvol = NULL;
@@ -3096,11 +3095,11 @@ dht_mkdir_selfheal_cbk (call_frame_t *frame, void *cookie,
 
 	if (op_ret == 0) {
                 dht_layout_set (this, local->inode, layout);
-		local->stbuf.st_ino = local->st_ino;
-                local->stbuf.st_dev = local->st_dev;
+		local->stbuf.ia_ino = local->ia_ino;
+                local->stbuf.ia_gen = local->ia_gen;
                 if (local->loc.parent) {
-                        local->preparent.st_ino = local->loc.parent->ino;
-                        local->postparent.st_ino = local->loc.parent->ino;
+                        local->preparent.ia_ino = local->loc.parent->ino;
+                        local->postparent.ia_ino = local->loc.parent->ino;
 
                         WIPE (&local->preparent);
                         WIPE (&local->postparent);
@@ -3116,8 +3115,8 @@ dht_mkdir_selfheal_cbk (call_frame_t *frame, void *cookie,
 
 int
 dht_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-               int op_ret, int op_errno, inode_t *inode, struct stat *stbuf,
-               struct stat *preparent, struct stat *postparent)
+               int op_ret, int op_errno, inode_t *inode, struct iatt *stbuf,
+               struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -3148,14 +3147,14 @@ dht_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			local->op_errno = op_errno;
 			goto unlock;
 		}
-		dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
-                dht_stat_merge (this, &local->preparent, preparent, prev->this);
-                dht_stat_merge (this, &local->postparent, postparent,
+		dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
+                dht_iatt_merge (this, &local->preparent, preparent, prev->this);
+                dht_iatt_merge (this, &local->postparent, postparent,
                                 prev->this);
 
                 if (prev->this == dht_first_up_subvol (this)) {
-                        local->st_ino = local->stbuf.st_ino;
-                        local->st_dev = local->stbuf.st_dev;
+                        local->ia_ino = local->stbuf.ia_ino;
+                        local->ia_gen = local->stbuf.ia_gen;
                 }
 
 	}
@@ -3174,8 +3173,8 @@ unlock:
 int
 dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie, 
 		      xlator_t *this, int op_ret, int op_errno,
-                      inode_t *inode, struct stat *stbuf,
-                      struct stat *preparent, struct stat *postparent)
+                      inode_t *inode, struct iatt *stbuf,
+                      struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	int           ret = -1;
@@ -3204,12 +3203,12 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
 	}
 	local->op_ret = 0;
 
-	dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
-        dht_stat_merge (this, &local->preparent, preparent, prev->this);
-        dht_stat_merge (this, &local->postparent, postparent, prev->this);
+	dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
+        dht_iatt_merge (this, &local->preparent, preparent, prev->this);
+        dht_iatt_merge (this, &local->postparent, postparent, prev->this);
 
-	local->st_ino = local->stbuf.st_ino;
-        local->st_dev = local->stbuf.st_dev;
+	local->ia_ino = local->stbuf.ia_ino;
+        local->ia_gen = local->stbuf.ia_gen;
 
 	local->call_cnt = conf->subvolume_cnt - 1;
 	
@@ -3314,8 +3313,8 @@ dht_rmdir_selfheal_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	local = frame->local;
 
         if (local->loc.parent) {
-                local->preparent.st_ino = local->loc.parent->ino;
-                local->postparent.st_ino = local->loc.parent->ino;
+                local->preparent.ia_ino = local->loc.parent->ino;
+                local->postparent.ia_ino = local->loc.parent->ino;
         }
 
 	DHT_STACK_UNWIND (rmdir, frame, local->op_ret, local->op_errno,
@@ -3327,8 +3326,8 @@ dht_rmdir_selfheal_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int
 dht_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-	       int op_ret, int op_errno, struct stat *preparent,
-               struct stat *postparent)
+	       int op_ret, int op_errno, struct iatt *preparent,
+               struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -3353,8 +3352,8 @@ dht_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			goto unlock;
 		}
 
-                dht_stat_merge (this, &local->preparent, preparent, prev->this);
-                dht_stat_merge (this, &local->postparent, postparent,
+                dht_iatt_merge (this, &local->preparent, preparent, prev->this);
+                dht_iatt_merge (this, &local->postparent, postparent,
                                 prev->this);
 	}
 unlock:
@@ -3368,15 +3367,15 @@ unlock:
                                 dht_layout_get (this, local->loc.inode);
 
 			/* TODO: neater interface needed below */
-			local->stbuf.st_mode = local->loc.inode->st_mode;
+			local->stbuf.ia_type = local->loc.inode->ia_type;
 
 			dht_selfheal_restore (frame, dht_rmdir_selfheal_cbk,
 					      &local->loc, local->layout);
 		} else {
                         if (local->loc.parent) {
-                                local->preparent.st_ino =
+                                local->preparent.ia_ino =
                                         local->loc.parent->ino;
-                                local->postparent.st_ino =
+                                local->postparent.ia_ino =
                                         local->loc.parent->ino;
 
                                 WIPE (&local->preparent);
@@ -3426,8 +3425,8 @@ err:
 
 int
 dht_rmdir_linkfile_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                               int op_ret, int op_errno, struct stat *preparent,
-                               struct stat *postparent)
+                               int op_ret, int op_errno, struct iatt *preparent,
+                               struct iatt *postparent)
 {
         dht_local_t    *local = NULL;
         call_frame_t   *prev = NULL;
@@ -3467,7 +3466,7 @@ dht_rmdir_linkfile_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this
 int
 dht_rmdir_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                       int op_ret, int op_errno, inode_t *inode,
-                      struct stat *stbuf, dict_t *xattr, struct stat *parent)
+                      struct iatt *stbuf, dict_t *xattr, struct iatt *parent)
 {
         dht_local_t    *local = NULL;
         call_frame_t   *prev = NULL;
@@ -3491,8 +3490,8 @@ dht_rmdir_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 main_local->op_errno = ENOTEMPTY;
 
                 gf_log (this->name, GF_LOG_WARNING,
-                        "%s on %s found to be not a linkfile (mode=0%o)",
-                        local->loc.path, src->name, stbuf->st_mode);
+                        "%s on %s found to be not a linkfile (type=0%o)",
+                        local->loc.path, src->name, stbuf->ia_type);
                 goto err;
         }
 
@@ -4048,8 +4047,8 @@ err:
 
 int
 dht_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                 int op_ret, int op_errno, struct stat *statpre,
-                 struct stat *statpost)
+                 int op_ret, int op_errno, struct iatt *statpre,
+                 struct iatt *statpost)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -4069,12 +4068,12 @@ dht_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			goto unlock;
 		}
 
-		dht_stat_merge (this, &local->prebuf, statpre, prev->this);
-                dht_stat_merge (this, &local->stbuf, statpost, prev->this);
+		dht_iatt_merge (this, &local->prebuf, statpre, prev->this);
+                dht_iatt_merge (this, &local->stbuf, statpost, prev->this);
 		
 		if (local->inode) {
-			local->prebuf.st_ino = local->inode->ino;
-                        local->stbuf.st_ino = local->inode->ino;
+			local->prebuf.ia_ino = local->inode->ino;
+                        local->stbuf.ia_ino = local->inode->ino;
                 }
 
 		local->op_ret = 0;
@@ -4093,7 +4092,7 @@ unlock:
 
 int
 dht_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
-             struct stat *stbuf, int32_t valid)
+             struct iatt *stbuf, int32_t valid)
 {
 	dht_layout_t *layout = NULL;
 	dht_local_t  *local  = NULL;
@@ -4151,7 +4150,7 @@ err:
 
 
 int
-dht_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct stat *stbuf,
+dht_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iatt *stbuf,
               int32_t valid)
 {
 	dht_layout_t *layout = NULL;
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index 9b978155e..e6e1e8181 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -67,12 +67,12 @@ struct dht_local {
 	int                      layout_mismatch;
         /* Use stbuf as the postbuf, when we require both
          * pre and post attrs */
-	struct stat              stbuf;
-        struct stat              prebuf;
-        struct stat              preoldparent;
-        struct stat              postoldparent;
-        struct stat              preparent;
-        struct stat              postparent;
+	struct iatt              stbuf;
+        struct iatt              prebuf;
+        struct iatt              preoldparent;
+        struct iatt              postoldparent;
+        struct iatt              preparent;
+        struct iatt              postparent;
 	struct statvfs           statvfs;
 	fd_t                    *fd;
 	inode_t                 *inode;
@@ -80,8 +80,8 @@ struct dht_local {
 	dict_t                  *xattr_req;
 	dht_layout_t            *layout;
 	size_t                   size;
-	ino_t                    st_ino;
-        ino_t                    st_dev;
+	ino_t                    ia_ino;
+        ino_t                    ia_gen;
 	xlator_t                *src_hashed, *src_cached;
 	xlator_t                *dst_hashed, *dst_cached;
 	xlator_t                *cached_subvol;
@@ -92,7 +92,7 @@ struct dht_local {
         call_frame_t            *main_frame;
 	struct {
 		fop_mknod_cbk_t  linkfile_cbk;
-		struct stat      stbuf;
+		struct iatt      stbuf;
 		loc_t            loc;
 		inode_t         *inode;
 		dict_t          *xattr;
@@ -169,11 +169,12 @@ typedef struct dht_disk_layout dht_disk_layout_t;
 #define is_last_call(cnt) (cnt == 0)
 
 #define DHT_LINKFILE_MODE (S_ISVTX)
-#define check_is_linkfile(i,s,x) (                              \
-                ((s->st_mode & ~S_IFMT) == DHT_LINKFILE_MODE) && \
-                (s->st_size == 0))
+#define check_is_linkfile(i,s,x) (                                      \
+                ((st_mode_from_ia (s->ia_prot, s->ia_type) & ~S_IFMT)   \
+                 == DHT_LINKFILE_MODE) &&                               \
+                (s->ia_size == 0))
 
-#define check_is_dir(i,s,x) (S_ISDIR(s->st_mode))
+#define check_is_dir(i,s,x) (IA_ISDIR(s->ia_type))
 
 #define layout_is_sane(layout) ((layout) && (layout->cnt > 0))
 
@@ -211,7 +212,7 @@ int dht_layout_dir_mismatch (xlator_t *this, dht_layout_t *layout,
 			     xlator_t *subvol, loc_t *loc, dict_t *xattr);
 
 xlator_t *dht_linkfile_subvol (xlator_t *this, inode_t *inode,
-			       struct stat *buf, dict_t *xattr);
+			       struct iatt *buf, dict_t *xattr);
 int dht_linkfile_unlink (call_frame_t *frame, xlator_t *this,
 			 xlator_t *subvol, loc_t *loc);
 
@@ -233,7 +234,7 @@ int dht_deitransform (xlator_t *this, uint64_t y, xlator_t **subvol,
 
 void dht_local_wipe (xlator_t *this, dht_local_t *local);
 dht_local_t *dht_local_init (call_frame_t *frame);
-int dht_stat_merge (xlator_t *this, struct stat *to, struct stat *from,
+int dht_iatt_merge (xlator_t *this, struct iatt *to, struct iatt *from,
 		    xlator_t *subvol);
 
 xlator_t *dht_subvol_get_hashed (xlator_t *this, loc_t *loc);
diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c
index fc7f7a4bf..f2e1a182a 100644
--- a/xlators/cluster/dht/src/dht-helper.c
+++ b/xlators/cluster/dht/src/dht-helper.c
@@ -340,29 +340,31 @@ dht_subvol_cnt (xlator_t *this, xlator_t *subvol)
 	} while (0)
 
 int
-dht_stat_merge (xlator_t *this, struct stat *to,
-		struct stat *from, xlator_t *subvol)
+dht_iatt_merge (xlator_t *this, struct iatt *to,
+		struct iatt *from, xlator_t *subvol)
 {
         if (!from || !to)
                 return 0;
 
-	to->st_dev      = from->st_dev;
+	to->ia_dev      = from->ia_dev;
 
-	dht_itransform (this, subvol, from->st_ino, &to->st_ino);
+	dht_itransform (this, subvol, from->ia_ino, &to->ia_ino);
+        to->ia_gen      = from->ia_gen;
 
-	to->st_mode     = from->st_mode;
-	to->st_nlink    = from->st_nlink;
-	to->st_rdev     = from->st_rdev;
-	to->st_size    += from->st_size;
-	to->st_blksize  = from->st_blksize;
-	to->st_blocks  += from->st_blocks;
+	to->ia_prot     = from->ia_prot;
+	to->ia_type     = from->ia_type;
+	to->ia_nlink    = from->ia_nlink;
+	to->ia_rdev     = from->ia_rdev;
+	to->ia_size    += from->ia_size;
+	to->ia_blksize  = from->ia_blksize;
+	to->ia_blocks  += from->ia_blocks;
 
-	set_if_greater (to->st_uid, from->st_uid);
-	set_if_greater (to->st_gid, from->st_gid);
+	set_if_greater (to->ia_uid, from->ia_uid);
+	set_if_greater (to->ia_gid, from->ia_gid);
 
-	set_if_greater (to->st_atime, from->st_atime);
-	set_if_greater (to->st_mtime, from->st_mtime);
-	set_if_greater (to->st_ctime, from->st_ctime);
+	set_if_greater (to->ia_atime, from->ia_atime);
+	set_if_greater (to->ia_mtime, from->ia_mtime);
+	set_if_greater (to->ia_ctime, from->ia_ctime);
 
 	return 0;
 }
diff --git a/xlators/cluster/dht/src/dht-linkfile.c b/xlators/cluster/dht/src/dht-linkfile.c
index 77e7818ef..3f4630cf4 100644
--- a/xlators/cluster/dht/src/dht-linkfile.c
+++ b/xlators/cluster/dht/src/dht-linkfile.c
@@ -49,8 +49,8 @@ dht_linkfile_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 int
 dht_linkfile_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int op_ret, int op_errno, inode_t *inode,
-                         struct stat *stbuf, struct stat *preparent,
-                         struct stat *postparent)
+                         struct iatt *stbuf, struct iatt *preparent,
+                         struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -134,7 +134,7 @@ dht_linkfile_create (call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk,
 int
 dht_linkfile_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			 int32_t op_ret, int32_t op_errno,
-                         struct stat *preparent, struct stat *postparent)
+                         struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t   *local = NULL;
 	call_frame_t  *prev = NULL;
@@ -193,7 +193,7 @@ err:
 
 
 xlator_t *
-dht_linkfile_subvol (xlator_t *this, inode_t *inode, struct stat *stbuf,
+dht_linkfile_subvol (xlator_t *this, inode_t *inode, struct iatt *stbuf,
 		     dict_t *xattr)
 {
 	dht_conf_t *conf = NULL;
diff --git a/xlators/cluster/dht/src/dht-rename.c b/xlators/cluster/dht/src/dht-rename.c
index b0356da87..54c41120c 100644
--- a/xlators/cluster/dht/src/dht-rename.c
+++ b/xlators/cluster/dht/src/dht-rename.c
@@ -33,9 +33,9 @@
 
 int
 dht_rename_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		    int32_t op_ret, int32_t op_errno, struct stat *stbuf,
-                    struct stat *preoldparent, struct stat *postoldparent,
-                    struct stat *prenewparent, struct stat *postnewparent)
+		    int32_t op_ret, int32_t op_errno, struct iatt *stbuf,
+                    struct iatt *preoldparent, struct iatt *postoldparent,
+                    struct iatt *prenewparent, struct iatt *postnewparent)
 {
 	dht_local_t  *local = NULL;
 	int           this_call_cnt = 0;
@@ -61,26 +61,26 @@ dht_rename_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                  * FIXME: is this the correct way to build stbuf and
                  * parent bufs?
                 */
-                dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
-                dht_stat_merge (this, &local->preoldparent, preoldparent,
+                dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
+                dht_iatt_merge (this, &local->preoldparent, preoldparent,
                                 prev->this);
-                dht_stat_merge (this, &local->postoldparent, postoldparent,
+                dht_iatt_merge (this, &local->postoldparent, postoldparent,
                                 prev->this);
-                dht_stat_merge (this, &local->preparent, prenewparent,
+                dht_iatt_merge (this, &local->preparent, prenewparent,
                                 prev->this);
-                dht_stat_merge (this, &local->postparent, postnewparent,
+                dht_iatt_merge (this, &local->postparent, postnewparent,
                                 prev->this);
 	}
 
 	this_call_cnt = dht_frame_return (frame);
 	if (is_last_call (this_call_cnt)) {
-                local->stbuf.st_ino = local->loc.inode->ino;
+                local->stbuf.ia_ino = local->loc.inode->ino;
 
-                local->preoldparent.st_ino = local->loc.parent->ino;
-                local->postoldparent.st_ino = local->loc.parent->ino;
+                local->preoldparent.ia_ino = local->loc.parent->ino;
+                local->postoldparent.ia_ino = local->loc.parent->ino;
 
-                local->preparent.st_ino = local->loc2.parent->ino;
-                local->postparent.st_ino = local->loc2.parent->ino;
+                local->preparent.ia_ino = local->loc2.parent->ino;
+                local->postparent.ia_ino = local->loc2.parent->ino;
 
                 WIPE (&local->preoldparent);
                 WIPE (&local->postoldparent);
@@ -243,8 +243,8 @@ err:
 
 int
 dht_rename_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		       int32_t op_ret, int32_t op_errno, struct stat *preparent,
-                       struct stat *postparent)
+		       int32_t op_ret, int32_t op_errno, struct iatt *preparent,
+                       struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -347,9 +347,9 @@ nolinks:
 
 int
 dht_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		int32_t op_ret, int32_t op_errno, struct stat *stbuf,
-                struct stat *preoldparent, struct stat *postoldparent,
-                struct stat *prenewparent, struct stat *postnewparent)
+		int32_t op_ret, int32_t op_errno, struct iatt *stbuf,
+                struct iatt *preoldparent, struct iatt *postoldparent,
+                struct iatt *prenewparent, struct iatt *postnewparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -376,19 +376,19 @@ dht_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		goto cleanup;
 	}
 
-        dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
-        dht_stat_merge (this, &local->preoldparent, preoldparent, prev->this);
-        dht_stat_merge (this, &local->postoldparent, postoldparent, prev->this);
-        dht_stat_merge (this, &local->preparent, prenewparent, prev->this);
-        dht_stat_merge (this, &local->postparent, postnewparent, prev->this);
+        dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
+        dht_iatt_merge (this, &local->preoldparent, preoldparent, prev->this);
+        dht_iatt_merge (this, &local->postoldparent, postoldparent, prev->this);
+        dht_iatt_merge (this, &local->preparent, prenewparent, prev->this);
+        dht_iatt_merge (this, &local->postparent, postnewparent, prev->this);
 
-        local->stbuf.st_ino = local->loc.inode->ino;
+        local->stbuf.ia_ino = local->loc.inode->ino;
 
-        local->preoldparent.st_ino = local->loc.parent->ino;
-        local->postoldparent.st_ino = local->loc.parent->ino;
+        local->preoldparent.ia_ino = local->loc.parent->ino;
+        local->postoldparent.ia_ino = local->loc.parent->ino;
 
-        local->preparent.st_ino = local->loc2.parent->ino;
-        local->postparent.st_ino = local->loc2.parent->ino;
+        local->preparent.ia_ino = local->loc2.parent->ino;
+        local->postparent.ia_ino = local->loc2.parent->ino;
 	
 	/* NOTE: rename_subvol is the same subvolume from which dht_rename_cbk
 	 *       is called. since rename has already happened on rename_subvol,
@@ -504,8 +504,8 @@ dht_do_rename (call_frame_t *frame)
 int
 dht_rename_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		      int32_t op_ret, int32_t op_errno,
-                      inode_t *inode, struct stat *stbuf,
-                      struct stat *preparent, struct stat *postparent)
+                      inode_t *inode, struct iatt *stbuf,
+                      struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -680,7 +680,7 @@ dht_rename (call_frame_t *frame, xlator_t *this,
 		newloc->path, dst_hashed->name,
 		dst_cached ? dst_cached->name : "<nul>");
 
-	if (S_ISDIR (oldloc->inode->st_mode)) {
+	if (IA_ISDIR (oldloc->inode->ia_type)) {
 		dht_rename_dir (frame, this);
 	} else {
 		local->op_ret = 0;
diff --git a/xlators/cluster/dht/src/dht-selfheal.c b/xlators/cluster/dht/src/dht-selfheal.c
index a254b0ddc..8a4d3a6f5 100644
--- a/xlators/cluster/dht/src/dht-selfheal.c
+++ b/xlators/cluster/dht/src/dht-selfheal.c
@@ -196,8 +196,8 @@ dht_selfheal_dir_xattr (call_frame_t *frame, loc_t *loc, dht_layout_t *layout)
 int
 dht_selfheal_dir_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			    int op_ret, int op_errno,
-                            inode_t *inode, struct stat *stbuf,
-                            struct stat *preparent, struct stat *postparent)
+                            inode_t *inode, struct iatt *stbuf,
+                            struct iatt *preparent, struct iatt *postparent)
 {
 	dht_local_t   *local = NULL;
 	dht_layout_t  *layout = NULL;
@@ -212,12 +212,12 @@ dht_selfheal_dir_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	prev   = cookie;
 	subvol = prev->this;
 
-        dht_stat_merge (this, &local->stbuf, stbuf, prev->this);
+        dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
         if (prev->this == local->hashed_subvol)
-                local->st_ino = local->stbuf.st_ino;
+                local->ia_ino = local->stbuf.ia_ino;
 
-        dht_stat_merge (this, &local->preparent, preparent, prev->this);
-        dht_stat_merge (this, &local->postparent, postparent, prev->this);
+        dht_iatt_merge (this, &local->preparent, preparent, prev->this);
+        dht_iatt_merge (this, &local->postparent, postparent, prev->this);
 
 	if ((op_ret == 0) || (op_errno == EEXIST)) {
 		for (i = 0; i < layout->cnt; i++) {
@@ -271,7 +271,9 @@ dht_selfheal_dir_mkdir (call_frame_t *frame, loc_t *loc,
 			STACK_WIND (frame, dht_selfheal_dir_mkdir_cbk,
 				    layout->list[i].xlator,
 				    layout->list[i].xlator->fops->mkdir,
-				    loc, local->stbuf.st_mode);
+				    loc,
+                                    st_mode_from_ia (local->stbuf.ia_prot,
+                                                     local->stbuf.ia_type));
 		}
 	}
 
diff --git a/xlators/cluster/dht/src/nufa.c b/xlators/cluster/dht/src/nufa.c
index a4a4a2568..edb900f76 100644
--- a/xlators/cluster/dht/src/nufa.c
+++ b/xlators/cluster/dht/src/nufa.c
@@ -30,8 +30,8 @@
 int
 nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		       int op_ret, int op_errno,
-                       inode_t *inode, struct stat *stbuf, dict_t *xattr,
-                       struct stat *postparent)
+                       inode_t *inode, struct iatt *stbuf, dict_t *xattr,
+                       struct iatt *postparent)
 {
         xlator_t     *subvol      = NULL;
         char          is_linkfile = 0;
@@ -68,8 +68,8 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         if (!is_dir && !is_linkfile) {
                 /* non-directory and not a linkfile */
 
-		dht_itransform (this, prev->this, stbuf->st_ino,
-				&stbuf->st_ino);
+		dht_itransform (this, prev->this, stbuf->ia_ino,
+				&stbuf->ia_ino);
 
 		ret = dht_layout_preset (this, prev->this, inode);
 		if (ret < 0) {
@@ -224,7 +224,7 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
 		}
 
 		local->inode    = inode_ref (loc->inode);
-		local->st_ino   = loc->inode->ino;
+		local->ia_ino   = loc->inode->ino;
 
 		local->call_cnt = layout->cnt;
 		call_cnt = local->call_cnt;
@@ -271,9 +271,9 @@ err:
 int
 nufa_create_linkfile_create_cbk (call_frame_t *frame, void *cookie,
 				 xlator_t *this, int op_ret, int op_errno,
-                                 inode_t *inode, struct stat *stbuf,
-                                 struct stat *preparent,
-                                 struct stat *postparent)
+                                 inode_t *inode, struct iatt *stbuf,
+                                 struct iatt *preparent,
+                                 struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -382,8 +382,8 @@ err:
 int
 nufa_mknod_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int op_ret, int op_errno, inode_t *inode,
-                         struct stat *stbuf, struct stat *preparent,
-                         struct stat *postparent)
+                         struct iatt *stbuf, struct iatt *preparent,
+                         struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
diff --git a/xlators/cluster/dht/src/switch.c b/xlators/cluster/dht/src/switch.c
index 766bd31ff..680ce8d6f 100644
--- a/xlators/cluster/dht/src/switch.c
+++ b/xlators/cluster/dht/src/switch.c
@@ -104,8 +104,8 @@ get_switch_matching_subvol (const char *path, dht_conf_t *conf,
 int
 switch_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int op_ret, int op_errno,
-                         inode_t *inode, struct stat *stbuf, dict_t *xattr,
-                         struct stat *postparent)
+                         inode_t *inode, struct iatt *stbuf, dict_t *xattr,
+                         struct iatt *postparent)
 {
         xlator_t     *subvol      = NULL;
         char          is_linkfile = 0;
@@ -141,8 +141,8 @@ switch_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         if (!is_dir && !is_linkfile) {
                 /* non-directory and not a linkfile */
 
-		dht_itransform (this, prev->this, stbuf->st_ino,
-				&stbuf->st_ino);
+		dht_itransform (this, prev->this, stbuf->ia_ino,
+				&stbuf->ia_ino);
 
 		ret = dht_layout_preset (this, prev->this, inode);
 		if (ret < 0) {
@@ -297,7 +297,7 @@ switch_lookup (call_frame_t *frame, xlator_t *this,
 		}
 
 		local->inode    = inode_ref (loc->inode);
-		local->st_ino   = loc->inode->ino;
+		local->ia_ino   = loc->inode->ino;
 
 		local->call_cnt = layout->cnt;
 		call_cnt = local->call_cnt;
@@ -379,9 +379,9 @@ err:
 int
 switch_create_linkfile_create_cbk (call_frame_t *frame, void *cookie,
 				 xlator_t *this, int op_ret, int op_errno,
-                                 inode_t *inode, struct stat *stbuf,
-                                 struct stat *preparent,
-                                 struct stat *postparent)
+                                 inode_t *inode, struct iatt *stbuf,
+                                 struct iatt *preparent,
+                                 struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
@@ -489,8 +489,8 @@ err:
 int
 switch_mknod_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int op_ret, int op_errno, inode_t *inode,
-                         struct stat *stbuf, struct stat *preparent,
-                         struct stat *postparent)
+                         struct iatt *stbuf, struct iatt *preparent,
+                         struct iatt *postparent)
 {
 	dht_local_t  *local = NULL;
 	call_frame_t *prev = NULL;
diff --git a/xlators/cluster/ha/src/ha.c b/xlators/cluster/ha/src/ha.c
index 442de21df..3317ae783 100644
--- a/xlators/cluster/ha/src/ha.c
+++ b/xlators/cluster/ha/src/ha.c
@@ -98,9 +98,9 @@ ha_lookup_cbk (call_frame_t *frame,
 	       int32_t op_ret,
 	       int32_t op_errno,
 	       inode_t *inode,
-	       struct stat *buf,
+	       struct iatt *buf,
                dict_t *dict,
-               struct stat *postparent)
+               struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -245,7 +245,7 @@ ha_stat_cbk (call_frame_t *frame,
 	     xlator_t *this,
 	     int32_t op_ret,
 	     int32_t op_errno,
-	     struct stat *buf)
+	     struct iatt *buf)
 {
 	int ret = -1;
 
@@ -290,8 +290,8 @@ err:
 
 int32_t
 ha_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                int32_t op_ret, int32_t op_errno, struct stat *statpre,
-                struct stat *statpost)
+                int32_t op_ret, int32_t op_errno, struct iatt *statpre,
+                struct iatt *statpost)
 {
 	int ret = -1;
 
@@ -305,7 +305,7 @@ ha_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 
 int32_t
-ha_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, struct stat *stbuf,
+ha_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, struct iatt *stbuf,
             int32_t valid)
 {
 	ha_local_t *local = NULL;
@@ -333,7 +333,7 @@ err:
 
 
 int32_t
-ha_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct stat *stbuf,
+ha_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iatt *stbuf,
              int32_t valid)
 {
 	ha_local_t *local = NULL;
@@ -366,8 +366,8 @@ ha_truncate_cbk (call_frame_t *frame,
 		 xlator_t *this,
 		 int32_t op_ret,
 		 int32_t op_errno,
-		 struct stat *prebuf,
-                 struct stat *postbuf)
+		 struct iatt *prebuf,
+                 struct iatt *postbuf)
 {
 	int ret = -1;
 
@@ -423,8 +423,8 @@ ha_ftruncate_cbk (call_frame_t *frame,
 		  xlator_t *this,
 		  int32_t op_ret,
 		  int32_t op_errno,
-		  struct stat *prebuf,
-                  struct stat *postbuf)
+		  struct iatt *prebuf,
+                  struct iatt *postbuf)
 {
 	int ret = -1;
 
@@ -546,7 +546,7 @@ ha_readlink_cbk (call_frame_t *frame,
 		 int32_t op_ret,
 		 int32_t op_errno,
 		 const char *path,
-                 struct stat *sbuf)
+                 struct iatt *sbuf)
 {
 	int ret = -1;
 
@@ -599,9 +599,9 @@ ha_mknod_lookup_cbk (call_frame_t *frame,
 		     int32_t op_ret,
 		     int32_t op_errno,
 		     inode_t *inode,
-		     struct stat *buf,
+		     struct iatt *buf,
                      dict_t *dict,
-                     struct stat *postparent)
+                     struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -664,9 +664,9 @@ ha_mknod_cbk (call_frame_t *frame,
 	      int32_t op_ret,
 	      int32_t op_errno,
 	      inode_t *inode,
-              struct stat *buf,
-              struct stat *preparent,
-              struct stat *postparent)
+              struct iatt *buf,
+              struct iatt *preparent,
+              struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -837,9 +837,9 @@ ha_mkdir_lookup_cbk (call_frame_t *frame,
 		     int32_t op_ret,
 		     int32_t op_errno,
 		     inode_t *inode,
-		     struct stat *buf,
+		     struct iatt *buf,
                      dict_t *dict,
-                     struct stat *postparent)
+                     struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -893,9 +893,9 @@ ha_mkdir_cbk (call_frame_t *frame,
 	      int32_t op_ret,
 	      int32_t op_errno,
 	      inode_t *inode,
-              struct stat *buf,
-              struct stat *preparent,
-              struct stat *postparent)
+              struct iatt *buf,
+              struct iatt *preparent,
+              struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -1056,8 +1056,8 @@ ha_unlink_cbk (call_frame_t *frame,
 	       xlator_t *this,
 	       int32_t op_ret,
 	       int32_t op_errno,
-               struct stat *preparent,
-               struct stat *postparent)
+               struct iatt *preparent,
+               struct iatt *postparent)
 {
 	int ret = -1;
 
@@ -1108,8 +1108,8 @@ ha_rmdir_cbk (call_frame_t *frame,
 	      xlator_t *this,
 	      int32_t op_ret,
 	      int32_t op_errno,
-              struct stat *preparent,
-              struct stat *postparent)
+              struct iatt *preparent,
+              struct iatt *postparent)
 {
 	int ret = -1;
 
@@ -1166,9 +1166,9 @@ ha_symlink_lookup_cbk (call_frame_t *frame,
 		       int32_t op_ret,
 		       int32_t op_errno,
 		       inode_t *inode,
-		       struct stat *buf,
+		       struct iatt *buf,
                        dict_t *dict,
-                       struct stat *postparent)
+                       struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -1222,9 +1222,9 @@ ha_symlink_cbk (call_frame_t *frame,
 		int32_t op_ret,
 		int32_t op_errno,
 		inode_t *inode,
-                struct stat *buf,
-                struct stat *preparent,
-                struct stat *postparent)
+                struct iatt *buf,
+                struct iatt *preparent,
+                struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -1385,11 +1385,11 @@ ha_rename_cbk (call_frame_t *frame,
 	       xlator_t *this,
 	       int32_t op_ret,
 	       int32_t op_errno,
-	       struct stat *buf,
-               struct stat *preoldparent,
-               struct stat *postoldparent,
-               struct stat *prenewparent,
-               struct stat *postnewparent)
+	       struct iatt *buf,
+               struct iatt *preoldparent,
+               struct iatt *postoldparent,
+               struct iatt *prenewparent,
+               struct iatt *postnewparent)
 {
 	int ret = -1;
 
@@ -1443,9 +1443,9 @@ ha_link_lookup_cbk (call_frame_t *frame,
 		    int32_t op_ret,
 		    int32_t op_errno,
 		    inode_t *inode,
-		    struct stat *buf,
+		    struct iatt *buf,
                     dict_t *dict,
-                    struct stat *postparent)
+                    struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -1499,9 +1499,9 @@ ha_link_cbk (call_frame_t *frame,
 	     int32_t op_ret,
 	     int32_t op_errno,
 	     inode_t *inode,
-             struct stat *buf,
-             struct stat *preparent,
-             struct stat *postparent)
+             struct iatt *buf,
+             struct iatt *preparent,
+             struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -1669,9 +1669,9 @@ ha_create_cbk (call_frame_t *frame,
 	       int32_t op_errno,
 	       fd_t *fd,
 	       inode_t *inode,
-	       struct stat *buf,
-               struct stat *preparent,
-               struct stat *postparent)
+	       struct iatt *buf,
+               struct iatt *preparent,
+               struct iatt *postparent)
 {
 	ha_local_t *local = NULL;
 	ha_private_t *pvt = NULL;
@@ -2044,7 +2044,7 @@ ha_readv_cbk (call_frame_t *frame,
 	      int32_t op_errno,
 	      struct iovec *vector,
 	      int32_t count,
-	      struct stat *stbuf,
+	      struct iatt *stbuf,
               struct iobref *iobref)
 {
 	int ret = 0;
@@ -2111,8 +2111,8 @@ ha_writev_cbk (call_frame_t *frame,
 	       xlator_t *this,
 	       int32_t op_ret,
 	       int32_t op_errno,
-               struct stat *prebuf,
-	       struct stat *postbuf)
+               struct iatt *prebuf,
+	       struct iatt *postbuf)
 {
 	int ret = 0;
 	ret = ha_handle_cbk (frame, cookie, op_ret, op_errno);
@@ -2237,8 +2237,8 @@ ha_fsync_cbk (call_frame_t *frame,
 	      xlator_t *this,
 	      int32_t op_ret,
 	      int32_t op_errno,
-              struct stat *prebuf,
-              struct stat *postbuf)
+              struct iatt *prebuf,
+              struct iatt *postbuf)
 {
 	int ret = 0;
 	ret = ha_handle_cbk (frame, cookie, op_ret, op_errno);
@@ -2297,7 +2297,7 @@ ha_fstat_cbk (call_frame_t *frame,
 	      xlator_t *this,
 	      int32_t op_ret,
 	      int32_t op_errno,
-	      struct stat *buf)
+	      struct iatt *buf)
 {
 	int ret = 0;
 
diff --git a/xlators/cluster/ha/src/ha.h b/xlators/cluster/ha/src/ha.h
index 0da31850c..e5c9541db 100644
--- a/xlators/cluster/ha/src/ha.h
+++ b/xlators/cluster/ha/src/ha.h
@@ -28,9 +28,9 @@ typedef struct {
 	char *state, *pattern;
 	dict_t *dict;
 	loc_t loc;
-	struct stat buf;
-        struct stat postparent;
-        struct stat preparent;
+	struct iatt buf;
+        struct iatt postparent;
+        struct iatt preparent;
 	fd_t *fd;
 	inode_t *inode;
 	int32_t flags;
diff --git a/xlators/cluster/map/src/map.c b/xlators/cluster/map/src/map.c
index 72464fc82..17de0c095 100644
--- a/xlators/cluster/map/src/map.c
+++ b/xlators/cluster/map/src/map.c
@@ -36,13 +36,13 @@ map_stat_cbk (call_frame_t *frame,
 		  xlator_t *this,
 		  int32_t op_ret,
 		  int32_t op_errno,
-		  struct stat *buf)
+		  struct iatt *buf)
 
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, buf);
 	return 0;
@@ -54,14 +54,14 @@ map_setattr_cbk (call_frame_t *frame,
                  xlator_t *this,
                  int32_t op_ret,
                  int32_t op_errno,
-                 struct stat *statpre,
-                 struct stat *statpost)
+                 struct iatt *statpre,
+                 struct iatt *statpost)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 
-	map_itransform (this, prev->this, statpre->st_ino, &statpre->st_ino);
-	map_itransform (this, prev->this, statpost->st_ino, &statpost->st_ino);
+	map_itransform (this, prev->this, statpre->ia_ino, &statpre->ia_ino);
+	map_itransform (this, prev->this, statpost->ia_ino, &statpost->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost);
 	return 0;
@@ -73,14 +73,14 @@ map_fsetattr_cbk (call_frame_t *frame,
                   xlator_t *this,
                   int32_t op_ret,
                   int32_t op_errno,
-                  struct stat *statpre,
-                  struct stat *statpost)
+                  struct iatt *statpre,
+                  struct iatt *statpost)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 
-	map_itransform (this, prev->this, statpre->st_ino, &statpre->st_ino);
-	map_itransform (this, prev->this, statpost->st_ino, &statpost->st_ino);
+	map_itransform (this, prev->this, statpre->ia_ino, &statpre->ia_ino);
+	map_itransform (this, prev->this, statpost->ia_ino, &statpost->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, statpre, statpost);
 	return 0;
@@ -92,13 +92,13 @@ map_truncate_cbk (call_frame_t *frame,
 		      xlator_t *this,
 		      int32_t op_ret,
 		      int32_t op_errno,
-		      struct stat *prebuf,
-                      struct stat *postbuf)
+		      struct iatt *prebuf,
+                      struct iatt *postbuf)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, postbuf->st_ino, &postbuf->st_ino);
+	map_itransform (this, prev->this, postbuf->ia_ino, &postbuf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf);
 	return 0;
@@ -110,13 +110,13 @@ map_ftruncate_cbk (call_frame_t *frame,
 		       xlator_t *this,
 		       int32_t op_ret,
 		       int32_t op_errno,
-		       struct stat *prebuf,
-                       struct stat *postbuf)
+		       struct iatt *prebuf,
+                       struct iatt *postbuf)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, postbuf->st_ino, &postbuf->st_ino);
+	map_itransform (this, prev->this, postbuf->ia_ino, &postbuf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf);
 	return 0;
@@ -141,7 +141,7 @@ map_readlink_cbk (call_frame_t *frame,
 		      int32_t op_ret,
 		      int32_t op_errno,
 		      const char *path,
-                      struct stat *sbuf)
+                      struct iatt *sbuf)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, path, sbuf);
 	return 0;
@@ -153,8 +153,8 @@ map_unlink_cbk (call_frame_t *frame,
 		    xlator_t *this,
 		    int32_t op_ret,
 		    int32_t op_errno,
-                    struct stat *preparent,
-                    struct stat *postparent)
+                    struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent);
 	return 0;
@@ -166,8 +166,8 @@ map_rmdir_cbk (call_frame_t *frame,
 		   xlator_t *this,
 		   int32_t op_ret,
 		   int32_t op_errno,
-                   struct stat *preparent,
-                   struct stat *postparent)
+                   struct iatt *preparent,
+                   struct iatt *postparent)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent);
 	return 0;
@@ -180,16 +180,16 @@ map_rename_cbk (call_frame_t *frame,
 		    xlator_t *this,
 		    int32_t op_ret,
 		    int32_t op_errno,
-		    struct stat *buf,
-                    struct stat *preoldparent,
-                    struct stat *postoldparent,
-                    struct stat *prenewparent,
-                    struct stat *postnewparent)
+		    struct iatt *buf,
+                    struct iatt *preoldparent,
+                    struct iatt *postoldparent,
+                    struct iatt *prenewparent,
+                    struct iatt *postnewparent)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, buf);
 	return 0;
@@ -202,14 +202,14 @@ map_link_cbk (call_frame_t *frame,
 		  int32_t op_ret,
 		  int32_t op_errno,
 		  inode_t *inode,
-                  struct stat *buf,
-                  struct stat *preparent,
-                  struct stat *postparent)
+                  struct iatt *buf,
+                  struct iatt *preparent,
+                  struct iatt *postparent)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, inode,	buf);
 	return 0;
@@ -235,13 +235,13 @@ map_readv_cbk (call_frame_t *frame,
                int32_t op_errno,
                struct iovec *vector,
                int32_t count,
-               struct stat *stbuf,
+               struct iatt *stbuf,
                struct iobref *iobref)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, stbuf->st_ino, &stbuf->st_ino);
+	map_itransform (this, prev->this, stbuf->ia_ino, &stbuf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref);
 	return 0;
@@ -253,13 +253,13 @@ map_writev_cbk (call_frame_t *frame,
 		    xlator_t *this,
 		    int32_t op_ret,
 		    int32_t op_errno,
-                    struct stat *prebuf,
-		    struct stat *postbuf)
+                    struct iatt *prebuf,
+		    struct iatt *postbuf)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, postbuf->st_ino, &postbuf->st_ino);
+	map_itransform (this, prev->this, postbuf->ia_ino, &postbuf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf);
 	return 0;
@@ -283,8 +283,8 @@ map_fsync_cbk (call_frame_t *frame,
 		   xlator_t *this,
 		   int32_t op_ret,
 		   int32_t op_errno,
-                   struct stat *prebuf,
-                   struct stat *postbuf)
+                   struct iatt *prebuf,
+                   struct iatt *postbuf)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf);
 	return 0;
@@ -297,12 +297,12 @@ map_fstat_cbk (call_frame_t *frame,
 		   xlator_t *this,
 		   int32_t op_ret,
 		   int32_t op_errno,
-		   struct stat *buf)
+		   struct iatt *buf)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, buf);
 	return 0;
@@ -492,14 +492,14 @@ map_newentry_cbk (call_frame_t *frame,
 		  int32_t op_ret,
 		  int32_t op_errno,
 		  inode_t *inode,
-                  struct stat *buf,
-                  struct stat *preparent,
-                  struct stat *postparent)
+                  struct iatt *buf,
+                  struct iatt *preparent,
+                  struct iatt *postparent)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
 	return 0;
@@ -515,14 +515,14 @@ map_create_cbk (call_frame_t *frame,
 		int32_t op_errno,
 		fd_t *fd,
 		inode_t *inode,
-		struct stat *buf,
-                struct stat *preparent,
-                struct stat *postparent)
+		struct iatt *buf,
+                struct iatt *preparent,
+                struct iatt *postparent)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf);
 	return 0;
@@ -624,14 +624,14 @@ map_single_lookup_cbk (call_frame_t *frame,
 		       int32_t op_ret,
 		       int32_t op_errno,
 		       inode_t *inode,
-		       struct stat *buf,
+		       struct iatt *buf,
                        dict_t *dict,
-                       struct stat *postparent)
+                       struct iatt *postparent)
 {
         call_frame_t *prev = NULL;
         prev  = cookie;
 	
-	map_itransform (this, prev->this, buf->st_ino, &buf->st_ino);
+	map_itransform (this, prev->this, buf->ia_ino, &buf->ia_ino);
 
 	STACK_UNWIND (frame, op_ret, op_errno, inode, buf, dict);
 
@@ -645,9 +645,9 @@ map_root_lookup_cbk (call_frame_t *frame,
                      int32_t op_ret,
                      int32_t op_errno,
                      inode_t *inode,
-                     struct stat *buf,
+                     struct iatt *buf,
                      dict_t *dict,
-                     struct stat *postparent)
+                     struct iatt *postparent)
 {
 	int          callcnt = 0;
 	map_local_t *local = NULL;
@@ -762,7 +762,7 @@ map_single_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	list_for_each_entry (orig_entry, &entries->list, list) {
 		map_itransform (this, prev->this, orig_entry->d_ino,
 				&orig_entry->d_ino);
-                orig_entry->d_stat.st_ino = orig_entry->d_ino;
+                orig_entry->d_stat.ia_ino = orig_entry->d_ino;
 	}
 	STACK_UNWIND (frame, op_ret, op_errno, entries);
 	return 0;
@@ -815,7 +815,7 @@ map_generic_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 				&entry->d_off);
 		
                 if (whichop == GF_FOP_READDIRP)
-                        entry->d_stat.st_ino = entry->d_ino;
+                        entry->d_stat.ia_ino = entry->d_ino;
 		entry->d_type = orig_entry->d_type;
 		entry->d_len  = orig_entry->d_len;
 		
@@ -957,7 +957,7 @@ int32_t
 map_setattr (call_frame_t *frame,
              xlator_t *this,
              loc_t *loc,
-             struct stat *stbuf,
+             struct iatt *stbuf,
              int32_t valid)
 {
 	int32_t op_errno = 1;
@@ -989,7 +989,7 @@ int32_t
 map_fsetattr (call_frame_t *frame,
               xlator_t *this,
               fd_t *fd,
-              struct stat *stbuf,
+              struct iatt *stbuf,
               int32_t valid)
 {
 	int32_t op_errno = 1;
diff --git a/xlators/cluster/map/src/map.h b/xlators/cluster/map/src/map.h
index b5f57518b..b423642cc 100644
--- a/xlators/cluster/map/src/map.h
+++ b/xlators/cluster/map/src/map.h
@@ -46,7 +46,7 @@ typedef struct {
 	int32_t        op_errno;
 	int            call_count;
 	struct statvfs statvfs;
-	struct stat    stbuf;
+	struct iatt    stbuf;
 	inode_t       *inode;
 	dict_t        *dict;
 	fd_t          *fd;
diff --git a/xlators/cluster/stripe/src/stripe.c b/xlators/cluster/stripe/src/stripe.c
index 21f1d0d03..420f43e20 100644
--- a/xlators/cluster/stripe/src/stripe.c
+++ b/xlators/cluster/stripe/src/stripe.c
@@ -75,7 +75,7 @@ stripe_get_matching_bs (const char *path, struct stripe_options *opts,
 int32_t
 stripe_common_remove_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                           int32_t op_ret, int32_t op_errno,
-                          struct stat *preparent, struct stat *postparent)
+                          struct iatt *preparent, struct iatt *postparent)
 {
         STACK_UNWIND (frame, op_ret, op_errno, preparent, postparent);
         return 0;
@@ -135,8 +135,8 @@ stripe_common_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int32_t
 stripe_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                  int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                  struct stat *postbuf)
+                  int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                  struct iatt *postbuf)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local   = NULL;
@@ -164,14 +164,14 @@ stripe_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->pre_buf  = *prebuf;
                                 local->post_buf = *postbuf;
                         }
-                        local->prebuf_blocks  += prebuf->st_blocks;
-                        local->postbuf_blocks += postbuf->st_blocks;
+                        local->prebuf_blocks  += prebuf->ia_blocks;
+                        local->postbuf_blocks += postbuf->ia_blocks;
 
-                        if (local->prebuf_size < prebuf->st_size)
-                                local->prebuf_size = prebuf->st_size;
+                        if (local->prebuf_size < prebuf->ia_size)
+                                local->prebuf_size = prebuf->ia_size;
 
-                        if (local->postbuf_size < postbuf->st_size)
-                                local->postbuf_size = postbuf->st_size;
+                        if (local->postbuf_size < postbuf->ia_size)
+                                local->postbuf_size = postbuf->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -186,10 +186,10 @@ stripe_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         loc_wipe (&local->loc2);
 
                 if (local->op_ret != -1) {
-                        local->pre_buf.st_blocks  = local->prebuf_blocks;
-                        local->pre_buf.st_size    = local->prebuf_size;
-                        local->post_buf.st_blocks = local->postbuf_blocks;
-                        local->post_buf.st_size   = local->postbuf_size;
+                        local->pre_buf.ia_blocks  = local->prebuf_blocks;
+                        local->pre_buf.ia_size    = local->prebuf_size;
+                        local->post_buf.ia_blocks = local->postbuf_blocks;
+                        local->post_buf.ia_size   = local->postbuf_size;
                 }
                 STACK_UNWIND (frame, local->op_ret, local->op_errno,
                               &local->pre_buf, &local->post_buf);
@@ -205,8 +205,8 @@ stripe_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
  */
 int32_t
 stripe_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct stat *preparent,
-                   struct stat *postparent)
+                   int32_t op_ret, int32_t op_errno, struct iatt *preparent,
+                   struct iatt *postparent)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local   = NULL;
@@ -235,14 +235,14 @@ stripe_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->preparent  = *preparent;
                                 local->postparent = *postparent;
                         }
-                        local->preparent_blocks  += preparent->st_blocks;
-                        local->postparent_blocks += postparent->st_blocks;
+                        local->preparent_blocks  += preparent->ia_blocks;
+                        local->postparent_blocks += postparent->ia_blocks;
 
-                        if (local->preparent_size < preparent->st_size)
-                                local->preparent_size = preparent->st_size;
+                        if (local->preparent_size < preparent->ia_size)
+                                local->preparent_size = preparent->ia_size;
 
-                        if (local->postparent_size < postparent->st_size)
-                                local->postparent_size = postparent->st_size;
+                        if (local->postparent_size < postparent->ia_size)
+                                local->postparent_size = postparent->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -257,10 +257,10 @@ stripe_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         loc_wipe (&local->loc2);
 
                 if (local->op_ret != -1) {
-                        local->preparent.st_blocks  = local->preparent_blocks;
-                        local->preparent.st_size    = local->preparent_size;
-                        local->postparent.st_blocks = local->postparent_blocks;
-                        local->postparent.st_size   = local->postparent_size;
+                        local->preparent.ia_blocks  = local->preparent_blocks;
+                        local->preparent.ia_size    = local->preparent_size;
+                        local->postparent.ia_blocks = local->postparent_blocks;
+                        local->postparent.ia_size   = local->postparent_size;
                 }
                 STACK_UNWIND (frame, local->op_ret, local->op_errno,
                               &local->preparent, &local->postparent);
@@ -270,8 +270,8 @@ stripe_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int32_t
 stripe_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                     struct stat *postbuf)
+                     int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                     struct iatt *postbuf)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local = NULL;
@@ -301,14 +301,14 @@ stripe_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->post_buf = *postbuf;
                         }
 
-                        local->prebuf_blocks  += prebuf->st_blocks;
-                        local->postbuf_blocks += postbuf->st_blocks;
+                        local->prebuf_blocks  += prebuf->ia_blocks;
+                        local->postbuf_blocks += postbuf->ia_blocks;
 
-                        if (local->prebuf_size < prebuf->st_size)
-                                local->prebuf_size = prebuf->st_size;
+                        if (local->prebuf_size < prebuf->ia_size)
+                                local->prebuf_size = prebuf->ia_size;
 
-                        if (local->postbuf_size < postbuf->st_size)
-                                local->postbuf_size = postbuf->st_size;
+                        if (local->postbuf_size < postbuf->ia_size)
+                                local->postbuf_size = postbuf->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -323,10 +323,10 @@ stripe_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         loc_wipe (&local->loc2);
 
                 if (local->op_ret != -1) {
-                        local->pre_buf.st_blocks  = local->prebuf_blocks;
-                        local->pre_buf.st_size    = local->prebuf_size;
-                        local->post_buf.st_blocks = local->postbuf_blocks;
-                        local->post_buf.st_size   = local->postbuf_size;
+                        local->pre_buf.ia_blocks  = local->prebuf_blocks;
+                        local->pre_buf.ia_size    = local->prebuf_size;
+                        local->post_buf.ia_blocks = local->postbuf_blocks;
+                        local->post_buf.ia_size   = local->postbuf_size;
                 }
 
                 STACK_UNWIND (frame, local->op_ret, local->op_errno,
@@ -339,7 +339,7 @@ stripe_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int32_t
 stripe_common_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno, struct stat *buf)
+                       int32_t op_ret, int32_t op_errno, struct iatt *buf)
 {
         STACK_UNWIND (frame, op_ret, op_errno, buf);
         return 0;
@@ -347,15 +347,16 @@ stripe_common_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 /**
  * stripe_buf_cbk -  This function is used for all the _cbk with
- *    'struct stat *buf' as extra argument (other than minimum)
+ *    'struct iatt *buf' as extra argument (other than minimum)
  * This is called from functions like, chmod, fchmod, chown, fchown,
  * truncate, ftruncate, utimens etc.
  *
  * @cookie - this argument should be always 'xlator_t *' of child node
  */
+
 int32_t
 stripe_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                int32_t op_ret, int32_t op_errno, struct stat *buf)
+                int32_t op_ret, int32_t op_errno, struct iatt *buf)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local = NULL;
@@ -385,9 +386,9 @@ stripe_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->stbuf = *buf;
                         }
 
-                        local->stbuf_blocks += buf->st_blocks;
-                        if (local->stbuf_size < buf->st_size)
-                                local->stbuf_size = buf->st_size;
+                        local->stbuf_blocks += buf->ia_blocks;
+                        if (local->stbuf_size < buf->ia_size)
+                                local->stbuf_size = buf->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -402,8 +403,8 @@ stripe_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         loc_wipe (&local->loc2);
 
                 if (local->op_ret != -1) {
-                        local->stbuf.st_size   = local->stbuf_size;
-                        local->stbuf.st_blocks = local->stbuf_blocks;
+                        local->stbuf.ia_size   = local->stbuf_size;
+                        local->stbuf.ia_blocks = local->stbuf_blocks;
                 }
 
                 STACK_UNWIND (frame, local->op_ret, local->op_errno,
@@ -417,8 +418,8 @@ stripe_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 int32_t
 stripe_common_inode_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int32_t op_ret, int32_t op_errno, inode_t *inode,
-                         struct stat *buf, struct stat *preparent,
-                         struct stat *postparent)
+                         struct iatt *buf, struct iatt *preparent,
+                         struct iatt *postparent)
 {
         STACK_UNWIND (frame, op_ret, op_errno, inode, buf, preparent,
                       postparent);
@@ -437,8 +438,8 @@ int32_t
 stripe_inode_cbk (call_frame_t *frame, void *cookie,
                   xlator_t *this, int32_t op_ret,
                   int32_t op_errno, inode_t *inode,
-                  struct stat *buf, struct stat *preparent,
-                  struct stat *postparent)
+                  struct iatt *buf, struct iatt *preparent,
+                  struct iatt *postparent)
 {
         int32_t         callcnt = 0;
         stripe_local_t  *local   = NULL;
@@ -471,16 +472,16 @@ stripe_inode_cbk (call_frame_t *frame, void *cookie,
                                 local->postparent = *postparent;
                                 local->preparent  = *preparent;
                         }
-                        local->stbuf_blocks      += buf->st_blocks;
-                        local->preparent_blocks  += preparent->st_blocks;
-                        local->postparent_blocks += postparent->st_blocks;
+                        local->stbuf_blocks      += buf->ia_blocks;
+                        local->preparent_blocks  += preparent->ia_blocks;
+                        local->postparent_blocks += postparent->ia_blocks;
 
-                        if (local->stbuf_size < buf->st_size)
-                                local->stbuf_size = buf->st_size;
-                        if (local->preparent_size < preparent->st_size)
-                                local->preparent_size = preparent->st_size;
-                        if (local->postparent_size < postparent->st_size)
-                                local->postparent_size = postparent->st_size;
+                        if (local->stbuf_size < buf->ia_size)
+                                local->stbuf_size = buf->ia_size;
+                        if (local->preparent_size < preparent->ia_size)
+                                local->preparent_size = preparent->ia_size;
+                        if (local->postparent_size < postparent->ia_size)
+                                local->postparent_size = postparent->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -492,12 +493,12 @@ stripe_inode_cbk (call_frame_t *frame, void *cookie,
                 local_inode = local->inode;
 
                 if (local->op_ret != -1) {
-                        local->preparent.st_blocks  = local->preparent_blocks;
-                        local->preparent.st_size    = local->preparent_size;
-                        local->postparent.st_blocks = local->postparent_blocks;
-                        local->postparent.st_size   = local->postparent_size;
-                        local->stbuf.st_size        = local->stbuf_size;
-                        local->stbuf.st_blocks      = local->stbuf_blocks;
+                        local->preparent.ia_blocks  = local->preparent_blocks;
+                        local->preparent.ia_size    = local->preparent_size;
+                        local->postparent.ia_blocks = local->postparent_blocks;
+                        local->postparent.ia_size   = local->postparent_size;
+                        local->stbuf.ia_size        = local->stbuf_size;
+                        local->stbuf.ia_blocks      = local->stbuf_blocks;
                 }
                 STACK_UNWIND (frame, local->op_ret, local->op_errno,
                               local->inode, &local->stbuf,
@@ -513,7 +514,7 @@ stripe_inode_cbk (call_frame_t *frame, void *cookie,
 int32_t
 stripe_sh_chown_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                      int32_t op_ret, int32_t op_errno,
-                     struct stat *preop, struct stat *postop)
+                     struct iatt *preop, struct iatt *postop)
 {
         int             callcnt = -1;
         stripe_local_t *local   = NULL;
@@ -536,8 +537,8 @@ stripe_sh_chown_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 int32_t
 stripe_sh_make_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                           int32_t op_ret, int32_t op_errno, inode_t *inode,
-                          struct stat *buf, struct stat *preparent,
-                          struct stat *postparent)
+                          struct iatt *buf, struct iatt *preparent,
+                          struct iatt *postparent)
 {
         stripe_local_t *local = NULL;
         call_frame_t    *prev = NULL;
@@ -561,8 +562,8 @@ stripe_entry_self_heal (call_frame_t *frame, xlator_t *this,
         stripe_local_t   *rlocal = NULL;
         stripe_private_t *priv   = NULL;
 
-        if (!(S_ISREG (local->stbuf.st_mode) ||
-              S_ISDIR (local->stbuf.st_mode)))
+        if (!(IA_ISREG (local->stbuf.ia_type) ||
+              IA_ISDIR (local->stbuf.ia_type)))
                 return 0;
 
         priv = this->private;
@@ -581,15 +582,18 @@ stripe_entry_self_heal (call_frame_t *frame, xlator_t *this,
         memcpy (&rlocal->stbuf, &local->stbuf, sizeof (struct stat));
 
         while (trav) {
-                if (S_ISREG (local->stbuf.st_mode)) {
+                if (IA_ISREG (local->stbuf.ia_type)) {
                         STACK_WIND (rframe, stripe_sh_make_entry_cbk,
                                     trav->xlator, trav->xlator->fops->mknod,
-                                    &local->loc, local->stbuf.st_mode, 0);
+                                    &local->loc,
+                                    st_mode_from_ia (local->stbuf.ia_prot,
+                                                     local->stbuf.ia_type), 0);
                 }
-                if (S_ISDIR (local->stbuf.st_mode)) {
+                if (IA_ISREG (local->stbuf.ia_type)) {
                         STACK_WIND (rframe, stripe_sh_make_entry_cbk,
                                     trav->xlator, trav->xlator->fops->mkdir,
-                                    &local->loc, local->stbuf.st_mode);
+                                    &local->loc, st_mode_from_ia (local->stbuf.ia_prot,
+                                                                  local->stbuf.ia_type));
                 }
                 trav = trav->next;
         }
@@ -601,7 +605,7 @@ out:
 int32_t
 stripe_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                    int32_t op_ret, int32_t op_errno, inode_t *inode,
-                   struct stat *buf, dict_t *dict, struct stat *postparent)
+                   struct iatt *buf, dict_t *dict, struct iatt *postparent)
 {
         int32_t         callcnt = 0;
         dict_t         *tmp_dict = NULL;
@@ -640,13 +644,13 @@ stripe_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->inode = inode_ref (inode);
                                 local->dict = dict_ref (dict);
                         }
-                        local->stbuf_blocks      += buf->st_blocks;
-                        local->postparent_blocks += postparent->st_blocks;
+                        local->stbuf_blocks      += buf->ia_blocks;
+                        local->postparent_blocks += postparent->ia_blocks;
 
-                        if (local->stbuf_size < buf->st_size)
-                                local->stbuf_size = buf->st_size;
-                        if (local->postparent_size < postparent->st_size)
-                                local->postparent_size = postparent->st_size;
+                        if (local->stbuf_size < buf->ia_size)
+                                local->stbuf_size = buf->ia_size;
+                        if (local->postparent_size < postparent->ia_size)
+                                local->postparent_size = postparent->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -662,10 +666,10 @@ stripe_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 tmp_inode = local->inode;
 
                 if (local->op_ret != -1) {
-                        local->stbuf.st_blocks      = local->stbuf_blocks;
-                        local->stbuf.st_size        = local->stbuf_size;
-                        local->postparent.st_blocks = local->postparent_blocks;
-                        local->postparent.st_size   = local->postparent_size;
+                        local->stbuf.ia_blocks      = local->stbuf_blocks;
+                        local->stbuf.ia_size        = local->stbuf_size;
+                        local->postparent.ia_blocks = local->postparent_blocks;
+                        local->postparent.ia_size   = local->postparent_size;
                 }
 
                 loc_wipe (&local->loc);
@@ -914,7 +918,7 @@ stripe_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset)
 int32_t
 stripe_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                     int32_t op_ret, int32_t op_errno,
-                    struct stat *preop, struct stat *postop)
+                    struct iatt *preop, struct iatt *postop)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local = NULL;
@@ -945,13 +949,13 @@ stripe_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->post_buf = *postop;
                         }
 
-                        local->prebuf_blocks  += preop->st_blocks;
-                        local->postbuf_blocks += postop->st_blocks;
+                        local->prebuf_blocks  += preop->ia_blocks;
+                        local->postbuf_blocks += postop->ia_blocks;
 
-                        if (local->prebuf_size < preop->st_size)
-                                local->prebuf_size = preop->st_size;
-                        if (local->postbuf_size < postop->st_size)
-                                local->postbuf_size = postop->st_size;
+                        if (local->prebuf_size < preop->ia_size)
+                                local->prebuf_size = preop->ia_size;
+                        if (local->postbuf_size < postop->ia_size)
+                                local->postbuf_size = postop->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -966,10 +970,10 @@ stripe_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         loc_wipe (&local->loc2);
 
                 if (local->op_ret != -1) {
-                        local->pre_buf.st_blocks  = local->prebuf_blocks;
-                        local->pre_buf.st_size    = local->prebuf_size;
-                        local->post_buf.st_blocks = local->postbuf_blocks;
-                        local->post_buf.st_size   = local->postbuf_size;
+                        local->pre_buf.ia_blocks  = local->prebuf_blocks;
+                        local->pre_buf.ia_size    = local->prebuf_size;
+                        local->post_buf.ia_blocks = local->postbuf_blocks;
+                        local->post_buf.ia_size   = local->postbuf_size;
                 }
 
                 STACK_UNWIND (frame, local->op_ret, local->op_errno,
@@ -982,7 +986,7 @@ stripe_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int32_t
 stripe_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                struct stat *stbuf, int32_t valid)
+                struct iatt *stbuf, int32_t valid)
 {
         xlator_list_t    *trav = NULL;
         stripe_local_t   *local = NULL;
@@ -1029,7 +1033,7 @@ stripe_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
 
 int32_t
 stripe_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                 struct stat *stbuf, int32_t valid)
+                 struct iatt *stbuf, int32_t valid)
 {
         stripe_local_t   *local = NULL;
         stripe_private_t *priv = NULL;
@@ -1068,9 +1072,9 @@ stripe_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
 
 int32_t
 stripe_stack_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno, struct stat *buf,
-                         struct stat *preoldparent, struct stat *postoldparent,
-                         struct stat *prenewparent, struct stat *postnewparent)
+                         int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                         struct iatt *preoldparent, struct iatt *postoldparent,
+                         struct iatt *prenewparent, struct iatt *postnewparent)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local = NULL;
@@ -1096,26 +1100,26 @@ stripe_stack_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                 if (op_ret == 0) {
                         local->op_ret = 0;
 
-                        local->stbuf.st_blocks      += buf->st_blocks;
-                        local->preparent.st_blocks  += preoldparent->st_blocks;
-                        local->postparent.st_blocks += postoldparent->st_blocks;
-                        local->pre_buf.st_blocks    += prenewparent->st_blocks;
-                        local->post_buf.st_blocks   += postnewparent->st_blocks;
+                        local->stbuf.ia_blocks      += buf->ia_blocks;
+                        local->preparent.ia_blocks  += preoldparent->ia_blocks;
+                        local->postparent.ia_blocks += postoldparent->ia_blocks;
+                        local->pre_buf.ia_blocks    += prenewparent->ia_blocks;
+                        local->post_buf.ia_blocks   += postnewparent->ia_blocks;
 
-                        if (local->stbuf.st_size < buf->st_size)
-                                local->stbuf.st_size =  buf->st_size;
+                        if (local->stbuf.ia_size < buf->ia_size)
+                                local->stbuf.ia_size =  buf->ia_size;
 
-                        if (local->preparent.st_size < preoldparent->st_size)
-                                local->preparent.st_size = preoldparent->st_size;
+                        if (local->preparent.ia_size < preoldparent->ia_size)
+                                local->preparent.ia_size = preoldparent->ia_size;
 
-                        if (local->postparent.st_size < postoldparent->st_size)
-                                local->postparent.st_size = postoldparent->st_size;
+                        if (local->postparent.ia_size < postoldparent->ia_size)
+                                local->postparent.ia_size = postoldparent->ia_size;
 
-                        if (local->pre_buf.st_size < prenewparent->st_size)
-                                local->pre_buf.st_size = prenewparent->st_size;
+                        if (local->pre_buf.ia_size < prenewparent->ia_size)
+                                local->pre_buf.ia_size = prenewparent->ia_size;
 
-                        if (local->post_buf.st_size < postnewparent->st_size)
-                                local->post_buf.st_size = postnewparent->st_size;
+                        if (local->post_buf.ia_size < postnewparent->ia_size)
+                                local->post_buf.ia_size = postnewparent->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -1140,9 +1144,9 @@ stripe_stack_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int32_t
 stripe_first_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno, struct stat *buf,
-                         struct stat *preoldparent, struct stat *postoldparent,
-                         struct stat *prenewparent, struct stat *postnewparent)
+                         int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                         struct iatt *preoldparent, struct iatt *postoldparent,
+                         struct iatt *prenewparent, struct iatt *postnewparent)
 {
         stripe_local_t *local = NULL;
         xlator_list_t  *trav = NULL;
@@ -1291,8 +1295,8 @@ stripe_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc)
 
 int32_t
 stripe_first_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                        int32_t op_ret, int32_t op_errno,struct stat *preparent,
-                        struct stat *postparent)
+                        int32_t op_ret, int32_t op_errno,struct iatt *preparent,
+                        struct iatt *postparent)
 
 {
         xlator_list_t *trav = NULL;
@@ -1311,10 +1315,10 @@ stripe_first_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
         local->preparent  = *preparent;
         local->postparent = *postparent;
-        local->preparent_blocks  += preparent->st_blocks;
-        local->postparent_blocks += postparent->st_blocks;
-        local->preparent_size  = preparent->st_size;
-        local->postparent_size = postparent->st_size;
+        local->preparent_blocks  += preparent->ia_blocks;
+        local->postparent_blocks += postparent->ia_blocks;
+        local->preparent_size  = preparent->ia_size;
+        local->postparent_size = postparent->ia_size;
 
         while (trav) {
                 STACK_WIND (frame, stripe_unlink_cbk, trav->xlator,
@@ -1375,8 +1379,8 @@ stripe_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc)
 int32_t
 stripe_mknod_ifreg_fail_unlink_cbk (call_frame_t *frame, void *cookie,
                                     xlator_t *this, int32_t op_ret,
-                                    int32_t op_errno, struct stat *preparent,
-                                    struct stat *postparent)
+                                    int32_t op_errno, struct iatt *preparent,
+                                    struct iatt *postparent)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local = NULL;
@@ -1458,8 +1462,8 @@ stripe_mknod_ifreg_setxattr_cbk (call_frame_t *frame, void *cookie,
 int32_t
 stripe_mknod_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         int32_t op_ret, int32_t op_errno, inode_t *inode,
-                        struct stat *buf, struct stat *preparent,
-                        struct stat *postparent)
+                        struct iatt *buf, struct iatt *preparent,
+                        struct iatt *postparent)
 {
         int               ret = 0;
         int32_t           callcnt = 0;
@@ -1495,16 +1499,16 @@ stripe_mknod_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->postparent = *postparent;
                         }
 
-                        local->stbuf_blocks += buf->st_blocks;
-                        local->preparent_blocks  += preparent->st_blocks;
-                        local->postparent_blocks += postparent->st_blocks;
+                        local->stbuf_blocks += buf->ia_blocks;
+                        local->preparent_blocks  += preparent->ia_blocks;
+                        local->postparent_blocks += postparent->ia_blocks;
 
-                        if (local->stbuf_size < buf->st_size)
-                                local->stbuf_size = buf->st_size;
-                        if (local->preparent_size < preparent->st_size)
-                                local->preparent_size = preparent->st_size;
-                        if (local->postparent_size < postparent->st_size)
-                                local->postparent_size = postparent->st_size;
+                        if (local->stbuf_size < buf->ia_size)
+                                local->stbuf_size = buf->ia_size;
+                        if (local->preparent_size < preparent->ia_size)
+                                local->preparent_size = preparent->ia_size;
+                        if (local->postparent_size < postparent->ia_size)
+                                local->postparent_size = postparent->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -1514,12 +1518,12 @@ stripe_mknod_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         local->op_ret = -1;
 
                 if (local->op_ret != -1) {
-                        local->preparent.st_blocks  = local->preparent_blocks;
-                        local->preparent.st_size    = local->preparent_size;
-                        local->postparent.st_blocks = local->postparent_blocks;
-                        local->postparent.st_size   = local->postparent_size;
-                        local->stbuf.st_size        = local->stbuf_size;
-                        local->stbuf.st_blocks      = local->stbuf_blocks;
+                        local->preparent.ia_blocks  = local->preparent_blocks;
+                        local->preparent.ia_size    = local->preparent_size;
+                        local->postparent.ia_blocks = local->postparent_blocks;
+                        local->postparent.ia_size   = local->postparent_size;
+                        local->stbuf.ia_size        = local->stbuf_size;
+                        local->stbuf.ia_blocks      = local->stbuf_blocks;
                 }
 
                 if ((local->op_ret != -1) && priv->xattr_supported) {
@@ -1758,8 +1762,8 @@ stripe_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc)
 int32_t
 stripe_create_fail_unlink_cbk (call_frame_t *frame, void *cookie,
                                xlator_t *this, int32_t op_ret,
-                               int32_t op_errno, struct stat *preparent,
-                               struct stat *postparent)
+                               int32_t op_errno, struct iatt *preparent,
+                               struct iatt *postparent)
 {
         int32_t         callcnt = 0;
         fd_t           *lfd = NULL;
@@ -1864,8 +1868,8 @@ stripe_create_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 int32_t
 stripe_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                    int32_t op_ret, int32_t op_errno, fd_t *fd,
-                   inode_t *inode, struct stat *buf, struct stat *preparent,
-                   struct stat *postparent)
+                   inode_t *inode, struct iatt *buf, struct iatt *preparent,
+                   struct iatt *postparent)
 {
         int32_t           callcnt = 0;
         stripe_local_t   *local = NULL;
@@ -1903,16 +1907,16 @@ stripe_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                                 local->postparent = *postparent;
                         }
 
-                        local->stbuf_blocks += buf->st_blocks;
-                        local->preparent_blocks  += preparent->st_blocks;
-                        local->postparent_blocks += postparent->st_blocks;
+                        local->stbuf_blocks += buf->ia_blocks;
+                        local->preparent_blocks  += preparent->ia_blocks;
+                        local->postparent_blocks += postparent->ia_blocks;
 
-                        if (local->stbuf_size < buf->st_size)
-                                local->stbuf_size = buf->st_size;
-                        if (local->preparent_size < preparent->st_size)
-                                local->preparent_size = preparent->st_size;
-                        if (local->postparent_size < postparent->st_size)
-                                local->postparent_size = postparent->st_size;
+                        if (local->stbuf_size < buf->ia_size)
+                                local->stbuf_size = buf->ia_size;
+                        if (local->preparent_size < preparent->ia_size)
+                                local->preparent_size = preparent->ia_size;
+                        if (local->postparent_size < postparent->ia_size)
+                                local->postparent_size = postparent->ia_size;
                 }
         }
         UNLOCK (&frame->lock);
@@ -1922,12 +1926,12 @@ stripe_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         local->op_ret = -1;
 
                 if (local->op_ret != -1) {
-                        local->preparent.st_blocks  = local->preparent_blocks;
-                        local->preparent.st_size    = local->preparent_size;
-                        local->postparent.st_blocks = local->postparent_blocks;
-                        local->postparent.st_size   = local->postparent_size;
-                        local->stbuf.st_size        = local->stbuf_size;
-                        local->stbuf.st_blocks      = local->stbuf_blocks;
+                        local->preparent.ia_blocks  = local->preparent_blocks;
+                        local->preparent.ia_size    = local->preparent_size;
+                        local->postparent.ia_blocks = local->postparent_blocks;
+                        local->postparent.ia_size   = local->postparent_size;
+                        local->stbuf.ia_size        = local->stbuf_size;
+                        local->stbuf.ia_blocks      = local->stbuf_blocks;
                 }
 
                 /* */
@@ -2822,7 +2826,7 @@ int32_t
 stripe_single_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          int32_t op_ret, int32_t op_errno,
                          struct iovec *vector, int32_t count,
-                         struct stat *stbuf, struct iobref *iobref)
+                         struct iatt *stbuf, struct iobref *iobref)
 {
         STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref);
         return 0;
@@ -2835,7 +2839,7 @@ stripe_single_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 int32_t
 stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                   int32_t op_ret, int32_t op_errno, struct iovec *vector,
-                  int32_t count, struct stat *stbuf, struct iobref *iobref)
+                  int32_t count, struct iatt *stbuf, struct iobref *iobref)
 {
         int32_t         index = 0;
         int32_t         callcnt = 0;
@@ -2876,7 +2880,7 @@ stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         if (callcnt == main_local->wind_count) {
                 int32_t        final_count = 0;
                 struct iovec  *final_vec = NULL;
-                struct stat    tmp_stbuf = {0,};
+                struct iatt    tmp_stbuf = {0,};
                 struct iobref *iobref = NULL;
 
                 op_ret = 0;
@@ -2895,10 +2899,10 @@ stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         }
                         /* ANSWER-ME: Do we need to send anything more in stbuf?
                          */
-                        if (tmp_stbuf.st_size <
-                            main_local->replies[index].stbuf.st_size) {
-                                tmp_stbuf.st_size =
-                                        main_local->replies[index].stbuf.st_size;
+                        if (tmp_stbuf.ia_size <
+                            main_local->replies[index].stbuf.ia_size) {
+                                tmp_stbuf.ia_size =
+                                        main_local->replies[index].stbuf.ia_size;
                         }
 
                         /* TODO: Should I handle a case where there is a hole
@@ -3086,8 +3090,8 @@ stripe_readv (call_frame_t *frame, xlator_t *this, fd_t *fd,
  */
 int32_t
 stripe_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct stat *prebuf,
-                   struct stat *postbuf)
+                   int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                   struct iatt *postbuf)
 {
         int32_t         callcnt = 0;
         stripe_local_t *local = NULL;
@@ -3128,7 +3132,7 @@ stripe_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
  */
 int32_t
 stripe_single_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, struct stat *stbuf)
+                          int32_t op_ret, int32_t op_errno, struct iatt *stbuf)
 {
         STACK_UNWIND (frame, op_ret, op_errno, stbuf);
         return 0;
diff --git a/xlators/cluster/stripe/src/stripe.h b/xlators/cluster/stripe/src/stripe.h
index 614fb7a08..85a50f817 100644
--- a/xlators/cluster/stripe/src/stripe.h
+++ b/xlators/cluster/stripe/src/stripe.h
@@ -69,7 +69,7 @@ struct readv_replies {
         int32_t       count;    //count of vector
         int32_t       op_ret;   //op_ret of readv
         int32_t       op_errno;
-        struct stat   stbuf;    /* 'stbuf' is also a part of reply */
+        struct iatt   stbuf;    /* 'stbuf' is also a part of reply */
 };
 
 typedef struct _stripe_fd_ctx {
@@ -92,11 +92,11 @@ struct stripe_local {
         stripe_fd_ctx_t     *fctx;
 
         /* Used by _cbk functions */
-        struct stat          stbuf;
-        struct stat          pre_buf;
-        struct stat          post_buf;
-        struct stat          preparent;
-        struct stat          postparent;
+        struct iatt          stbuf;
+        struct iatt          pre_buf;
+        struct iatt          post_buf;
+        struct iatt          preparent;
+        struct iatt          postparent;
 
         off_t                stbuf_size;
         off_t                prebuf_size;
diff --git a/xlators/cluster/unify/src/unify-self-heal.c b/xlators/cluster/unify/src/unify-self-heal.c
index 3e4affe8c..86f9e88fa 100644
--- a/xlators/cluster/unify/src/unify-self-heal.c
+++ b/xlators/cluster/unify/src/unify-self-heal.c
@@ -145,7 +145,7 @@ unify_sh_setdents_cbk (call_frame_t *frame,
 			while (trav) {
 				prev->next = trav->next;
 				FREE (trav->name);
-				if (S_ISLNK (trav->buf.st_mode))
+				if (IA_ISLNK (trav->buf.ia_type))
 					FREE (trav->link);
 				FREE (trav);
 				trav = prev->next;
@@ -260,7 +260,7 @@ unify_sh_ns_setdents_cbk (call_frame_t *frame,
 			while (trav) {
 				prev->next = trav->next;
 				FREE (trav->name);
-				if (S_ISLNK (trav->buf.st_mode))
+				if (IA_ISLNK (trav->buf.ia_type))
 					FREE (trav->link);
 				FREE (trav);
 				trav = prev->next;
@@ -669,7 +669,7 @@ unify_bgsh_setdents_cbk (call_frame_t *frame,
 			while (trav) {
 				prev->next = trav->next;
 				FREE (trav->name);
-				if (S_ISLNK (trav->buf.st_mode))
+				if (IA_ISLNK (trav->buf.ia_type))
 					FREE (trav->link);
 				FREE (trav);
 				trav = prev->next;
@@ -776,7 +776,7 @@ unify_bgsh_ns_setdents_cbk (call_frame_t *frame,
 		while (trav) {
 			prev->next = trav->next;
 			FREE (trav->name);
-			if (S_ISLNK (trav->buf.st_mode))
+			if (IA_ISLNK (trav->buf.ia_type))
 				FREE (trav->link);
 			FREE (trav);
 			trav = prev->next;
diff --git a/xlators/cluster/unify/src/unify.c b/xlators/cluster/unify/src/unify.c
index 6ce31da9d..2eadfe31c 100644
--- a/xlators/cluster/unify/src/unify.c
+++ b/xlators/cluster/unify/src/unify.c
@@ -27,7 +27,7 @@
  * NOTE:
  *   Now, unify has support for global namespace, which is used to keep a 
  * global view of fs's namespace tree. The stat for directories are taken
- * just from the namespace, where as for files, just 'st_ino' is taken from
+ * just from the namespace, where as for files, just 'ia_ino' is taken from
  * Namespace node, and other stat info is taken from the actual storage node.
  * Also Namespace node helps to keep consistant inode for files across 
  * glusterfs (re-)mounts.
@@ -129,7 +129,7 @@ unify_loc_subvol (loc_t *loc, xlator_t *this)
 	priv   = this->private;
 	subvol = NS (this);
 
-	if (!S_ISDIR (loc->inode->st_mode)) {
+	if (!IA_ISDIR (loc->inode->ia_type)) {
 		ret = inode_ctx_get (loc->inode, this, &tmp_list);
 		list = (int16_t *)(long)tmp_list;
 		if (!list)
@@ -253,7 +253,7 @@ unify_buf_cbk (call_frame_t *frame,
 	       xlator_t *this,
 	       int32_t op_ret,
 	       int32_t op_errno,
-	       struct stat *buf)
+	       struct iatt *buf)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -281,16 +281,16 @@ unify_buf_cbk (call_frame_t *frame,
 			local->op_ret = 0;
 
 			if (NS (this) == prev_frame->this) {
-				local->st_ino = buf->st_ino;
+				local->ia_ino = buf->ia_ino;
 				/* If the entry is directory, get the stat
 				   from NS node */
-				if (S_ISDIR (buf->st_mode) || 
-				    !local->stbuf.st_blksize) {
+				if (IA_ISDIR (buf->ia_type) || 
+				    !local->stbuf.ia_blksize) {
 					local->stbuf = *buf;
 				}
 			}
 
-			if ((!S_ISDIR (buf->st_mode)) && 
+			if ((!IA_ISDIR (buf->ia_type)) && 
 			    (NS (this) != prev_frame->this)) {
 				/* If file, take the stat info from Storage 
 				   node. */
@@ -303,10 +303,10 @@ unify_buf_cbk (call_frame_t *frame,
 	if (!callcnt) {
 		/* If the inode number is not filled, operation should
 		   fail */
-		if (!local->st_ino)
+		if (!local->ia_ino)
 			local->op_ret = -1;
 
-		local->stbuf.st_ino = local->st_ino;
+		local->stbuf.ia_ino = local->ia_ino;
 		unify_local_wipe (local);
 		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
 			      &local->stbuf);
@@ -315,7 +315,8 @@ unify_buf_cbk (call_frame_t *frame,
 	return 0;
 }
 
-#define check_if_dht_linkfile(s) ((s->st_mode & ~S_IFMT) == S_ISVTX)
+#define check_if_dht_linkfile(s) \
+        ((st_mode_from_ia (s->ia_prot, s->ia_type) & ~S_IFMT) == S_ISVTX)
 
 /**
  * unify_lookup_cbk - 
@@ -327,9 +328,9 @@ unify_lookup_cbk (call_frame_t *frame,
 		  int32_t op_ret,
 		  int32_t op_errno,
 		  inode_t *inode,
-		  struct stat *buf,
+		  struct iatt *buf,
 		  dict_t *dict,
-                  struct stat *postparent)
+                  struct iatt *postparent)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -390,11 +391,11 @@ unify_lookup_cbk (call_frame_t *frame,
 					priv->xl_array[(long)cookie]->name);
 			}
 
-			if (local->stbuf.st_mode && local->stbuf.st_blksize) {
+			if (local->stbuf.ia_type && local->stbuf.ia_blksize) {
 				/* make sure we already have a stbuf
 				   stored in local->stbuf */
-				if (S_ISDIR (local->stbuf.st_mode) && 
-				    !S_ISDIR (buf->st_mode)) {
+				if (IA_ISDIR (local->stbuf.ia_type) && 
+				    !IA_ISDIR (buf->ia_type)) {
 					gf_log (this->name, GF_LOG_CRITICAL, 
 						"[CRITICAL] '%s' is directory "
 						"on namespace, non-directory "
@@ -403,8 +404,8 @@ unify_lookup_cbk (call_frame_t *frame,
 						priv->xl_array[(long)cookie]->name);
 					local->return_eio = 1;
 				}
-				if (!S_ISDIR (local->stbuf.st_mode) && 
-				    S_ISDIR (buf->st_mode)) {
+				if (!IA_ISDIR (local->stbuf.ia_type) && 
+				    IA_ISDIR (buf->ia_type)) {
 					gf_log (this->name, GF_LOG_CRITICAL, 
 						"[CRITICAL] '%s' is directory "
 						"on node '%s', non-directory "
@@ -415,7 +416,7 @@ unify_lookup_cbk (call_frame_t *frame,
 				}
 			}
 	
-			if (!local->revalidate && !S_ISDIR (buf->st_mode)) {
+			if (!local->revalidate && !IA_ISDIR (buf->ia_type)) {
 				/* This is the first time lookup on file*/
 				if (!local->list) {
 					/* list is not allocated, allocate 
@@ -436,7 +437,7 @@ unify_lookup_cbk (call_frame_t *frame,
 					(int16_t)(long)cookie;
 			}
                         
-                        if (!local->revalidate && S_ISDIR (buf->st_mode)) {
+                        if (!local->revalidate && IA_ISDIR (buf->ia_type)) {
                                 /* fresh lookup of a directory */
                                 inode_ctx_put (local->loc1.inode, this, 
                                                priv->inode_generation);
@@ -450,20 +451,20 @@ unify_lookup_cbk (call_frame_t *frame,
 			/* index of NS node is == total child count */
 			if (priv->child_count == (int16_t)(long)cookie) {
 				/* Take the inode number from namespace */
-				local->st_ino = buf->st_ino;
-				if (S_ISDIR (buf->st_mode) || 
-				    !(local->stbuf.st_blksize)) {
+				local->ia_ino = buf->ia_ino;
+				if (IA_ISDIR (buf->ia_type) || 
+				    !(local->stbuf.ia_blksize)) {
 					local->stbuf = *buf;
                                         local->oldpostparent = *postparent;
 				}
-			} else if (!S_ISDIR (buf->st_mode)) {
+			} else if (!IA_ISDIR (buf->ia_type)) {
 				/* If file, then get the stat from 
 				   storage node */
 				local->stbuf = *buf;
 			}
 
-			if (local->st_nlink < buf->st_nlink) {
-				local->st_nlink = buf->st_nlink;
+			if (local->ia_nlink < buf->ia_nlink) {
+				local->ia_nlink = buf->ia_nlink;
 			}
 		}
 	}
@@ -484,12 +485,12 @@ unify_lookup_cbk (call_frame_t *frame,
 			return 0;
 		}
 
-		if (!local->stbuf.st_blksize) {
+		if (!local->stbuf.ia_blksize) {
 			/* Inode not present */
 			local->op_ret = -1;
 		} else {
 			if (!local->revalidate && 
-			    !S_ISDIR (local->stbuf.st_mode)) { 
+			    !IA_ISDIR (local->stbuf.ia_type)) { 
 				/* If its a file, big array is useless, 
 				   allocate the smaller one */
 				int16_t *list = NULL;
@@ -506,7 +507,7 @@ unify_lookup_cbk (call_frame_t *frame,
 					       (uint64_t)(long)local->list);
 			}
 
-			if (S_ISDIR(local->loc1.inode->st_mode)) {
+			if (IA_ISDIR(local->loc1.inode->ia_type)) {
 				/* lookup is done for directory */
 				if (local->failed && priv->self_heal) {
 					/* Triggering self-heal */
@@ -516,10 +517,10 @@ unify_lookup_cbk (call_frame_t *frame,
 					priv->inode_generation++;
 				}
 			} else {
-				local->stbuf.st_ino = local->st_ino;
+				local->stbuf.ia_ino = local->ia_ino;
 			}
 	  
-			local->stbuf.st_nlink = local->st_nlink;
+			local->stbuf.ia_nlink = local->ia_nlink;
 		}
 		if (local->op_ret == -1) {
 			if (!local->revalidate && local->list)
@@ -540,7 +541,7 @@ unify_lookup_cbk (call_frame_t *frame,
 
 		if ((priv->self_heal && !priv->optimist) && 
 		    (!local->revalidate && (local->op_ret == 0) && 
-		     S_ISDIR(local->stbuf.st_mode))) {
+		     IA_ISDIR(local->stbuf.ia_type))) {
 			/* Let the self heal be done here */
 			zr_unify_self_heal (frame, this, local);
 			local_dict = NULL;
@@ -598,13 +599,13 @@ unify_lookup (call_frame_t *frame,
 	}
         
         if (inode_ctx_get (loc->inode, this, NULL)
-            && S_ISDIR (loc->inode->st_mode)) {
+            && IA_ISDIR (loc->inode->ia_type)) {
                 local->revalidate = 1;
         }
 
 	if (!inode_ctx_get (loc->inode, this, NULL) && 
-	    loc->inode->st_mode && 
-	    !S_ISDIR (loc->inode->st_mode)) {
+	    loc->inode->ia_type && 
+	    !IA_ISDIR (loc->inode->ia_type)) {
 		uint64_t tmp_list = 0;
 		/* check if revalidate or fresh lookup */
 		inode_ctx_get (loc->inode, this, &tmp_list);
@@ -665,7 +666,7 @@ unify_lookup (call_frame_t *frame,
 				break;
 		}
 	} else {
-		if (loc->inode->st_mode) {
+		if (loc->inode->ia_type) {
 			if (inode_ctx_get (loc->inode, this, NULL)) {
 				inode_ctx_get (loc->inode, this, 
 					       &local->inode_generation);
@@ -718,8 +719,8 @@ unify_stat (call_frame_t *frame,
 		STACK_UNWIND (frame, -1, ENOMEM, NULL);
 		return 0;
 	}
-	local->st_ino = loc->inode->ino;
-	if (S_ISDIR (loc->inode->st_mode)) {
+	local->ia_ino = loc->inode->ino;
+	if (IA_ISDIR (loc->inode->ia_type)) {
 		/* Directory */
 		local->call_count = 1;
 		STACK_WIND (frame, unify_buf_cbk, NS(this),
@@ -791,9 +792,9 @@ unify_mkdir_cbk (call_frame_t *frame,
 		 int32_t op_ret,
 		 int32_t op_errno,
 		 inode_t *inode,
-                 struct stat *buf,
-                 struct stat *preparent,
-                 struct stat *postparent)
+                 struct iatt *buf,
+                 struct iatt *preparent,
+                 struct iatt *postparent)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -855,9 +856,9 @@ unify_ns_mkdir_cbk (call_frame_t *frame,
 		    int32_t op_ret,
 		    int32_t op_errno,
 		    inode_t *inode,
-                    struct stat *buf,
-                    struct stat *preparent,
-                    struct stat *postparent)
+                    struct iatt *buf,
+                    struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	unify_private_t *priv = this->private;
 	unify_local_t *local = frame->local;
@@ -941,8 +942,8 @@ unify_rmdir_cbk (call_frame_t *frame,
 		 xlator_t *this,
 		 int32_t op_ret,
 		 int32_t op_errno,
-                 struct stat *preparent,
-                 struct stat *postparent)
+                 struct iatt *preparent,
+                 struct iatt *postparent)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -976,8 +977,8 @@ unify_ns_rmdir_cbk (call_frame_t *frame,
 		    xlator_t *this,
 		    int32_t op_ret,
 		    int32_t op_errno,
-                    struct stat *preparent,
-                    struct stat *postparent)
+                    struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	int16_t index = 0;
 	unify_private_t *priv = this->private;
@@ -1113,7 +1114,7 @@ unify_open_lookup_cbk (call_frame_t *frame,
 		       int32_t op_ret,
 		       int32_t op_errno,
 		       inode_t *inode,
-		       struct stat *buf,
+		       struct iatt *buf,
 		       dict_t *dict)
 {
 	int32_t callcnt = 0;
@@ -1140,7 +1141,7 @@ unify_open_lookup_cbk (call_frame_t *frame,
 			} else {
 				local->list[1] = (int16_t)(long)cookie;
 			}
-			if (S_ISDIR (buf->st_mode))
+			if (IA_ISDIR (buf->ia_type))
 				local->failed = 1;
 		}
 	}
@@ -1306,7 +1307,7 @@ unify_open (call_frame_t *frame,
 
 #ifdef GF_DARWIN_HOST_OS
 	/* Handle symlink here */
-	if (S_ISLNK (loc->inode->st_mode)) {
+	if (IA_ISLNK (loc->inode->ia_type)) {
 		/* Callcount doesn't matter here */
 		STACK_WIND (frame,
 			    unify_open_readlink_cbk,
@@ -1342,8 +1343,8 @@ unify_create_unlink_cbk (call_frame_t *frame,
 			 xlator_t *this,
 			 int32_t op_ret,
 			 int32_t op_errno,
-                         struct stat *preparent,
-                         struct stat *postparent)
+                         struct iatt *preparent,
+                         struct iatt *postparent)
 {
 	unify_local_t *local = frame->local;
 	inode_t *inode = local->loc1.inode;
@@ -1457,9 +1458,9 @@ unify_create_lookup_cbk (call_frame_t *frame,
 			 int32_t op_ret,
 			 int32_t op_errno,
 			 inode_t *inode,
-			 struct stat *buf,
+			 struct iatt *buf,
 			 dict_t *dict,
-                         struct stat *postparent)
+                         struct iatt *postparent)
 {
 	int32_t callcnt = 0;
 	int16_t index = 0;
@@ -1482,7 +1483,7 @@ unify_create_lookup_cbk (call_frame_t *frame,
 			local->op_ret = op_ret; 
 			local->list[local->index++] = (int16_t)(long)cookie;
 			if (NS(this) == priv->xl_array[(long)cookie]) {
-				local->st_ino = buf->st_ino;
+				local->ia_ino = buf->ia_ino;
 			} else {
 				local->stbuf = *buf;
 			}
@@ -1500,7 +1501,7 @@ unify_create_lookup_cbk (call_frame_t *frame,
 		file_list[1] = list[1];
 		file_list[2] = -1;
 
-		local->stbuf.st_ino = local->st_ino;
+		local->stbuf.ia_ino = local->ia_ino;
 		/* TODO: log on failure */
 		inode_ctx_put (local->loc1.inode, this, 
 			       (uint64_t)(long)local->list);
@@ -1563,9 +1564,9 @@ unify_create_cbk (call_frame_t *frame,
 		  int32_t op_errno,
 		  fd_t *fd,
 		  inode_t *inode,
-		  struct stat *buf,
-                  struct stat *preparent,
-                  struct stat *postparent)
+		  struct iatt *buf,
+                  struct iatt *preparent,
+                  struct iatt *postparent)
 {
 	int ret = 0;
 	unify_local_t *local = frame->local;
@@ -1596,7 +1597,7 @@ unify_create_cbk (call_frame_t *frame,
 		local->op_ret = op_ret;
 		local->stbuf = *buf;
 		/* Just inode number should be from NS node */
-		local->stbuf.st_ino = local->st_ino;
+		local->stbuf.ia_ino = local->ia_ino;
 
 		/* TODO: log on failure */
 		ret = fd_ctx_set (fd, this, (uint64_t)(long)prev_frame->this);
@@ -1623,9 +1624,9 @@ unify_ns_create_cbk (call_frame_t *frame,
 		     int32_t op_errno,
 		     fd_t *fd,
 		     inode_t *inode,
-		     struct stat *buf,
-                     struct stat *preparent,
-                     struct stat *postparent)
+		     struct iatt *buf,
+                     struct iatt *preparent,
+                     struct iatt *postparent)
 {
 	struct sched_ops *sched_ops = NULL;
 	xlator_t *sched_xl = NULL;
@@ -1654,7 +1655,7 @@ unify_ns_create_cbk (call_frame_t *frame,
   
 	if (op_ret >= 0) {
 		/* Get the inode number from the NS node */
-		local->st_ino = buf->st_ino;
+		local->ia_ino = buf->ia_ino;
   
                 local->oldpreparent = *preparent;
                 local->oldpostparent = *postparent;
@@ -1803,8 +1804,8 @@ unify_opendir (call_frame_t *frame,
 
 int32_t
 unify_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct stat *statpre,
-                   struct stat *statpost)
+                   int32_t op_ret, int32_t op_errno, struct iatt *statpre,
+                   struct iatt *statpost)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -1832,17 +1833,17 @@ unify_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 			local->op_ret = 0;
 
 			if (NS (this) == prev_frame->this) {
-				local->st_ino = statpost->st_ino;
+				local->ia_ino = statpost->ia_ino;
 				/* If the entry is directory, get the stat
 				   from NS node */
-				if (S_ISDIR (statpost->st_mode) || 
-				    !local->stpost.st_blksize) {
+				if (IA_ISDIR (statpost->ia_type) || 
+				    !local->stpost.ia_blksize) {
 					local->stpre = *statpre;
                                         local->stpost = *statpost;
 				}
 			}
 
-			if ((!S_ISDIR (statpost->st_mode)) && 
+			if ((!IA_ISDIR (statpost->ia_type)) && 
 			    (NS (this) != prev_frame->this)) {
 				/* If file, take the stat info from Storage 
 				   node. */
@@ -1856,11 +1857,11 @@ unify_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	if (!callcnt) {
 		/* If the inode number is not filled, operation should
 		   fail */
-		if (!local->st_ino)
+		if (!local->ia_ino)
 			local->op_ret = -1;
 
-                local->stpre.st_ino = local->st_ino;
-		local->stpost.st_ino = local->st_ino;
+                local->stpre.ia_ino = local->ia_ino;
+		local->stpost.ia_ino = local->ia_ino;
 		unify_local_wipe (local);
 		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
 			      &local->stpre, &local->stpost);
@@ -1872,7 +1873,7 @@ unify_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
 int32_t
 unify_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
-               struct stat *stbuf, int32_t valid)
+               struct iatt *stbuf, int32_t valid)
 {
 	unify_local_t *local = NULL;
 	unify_private_t *priv = this->private;
@@ -1889,7 +1890,7 @@ unify_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
 	INIT_LOCAL (frame, local);
 	loc_copy (&local->loc1, loc);
 
-	if (S_ISDIR (loc->inode->st_mode)) {
+	if (IA_ISDIR (loc->inode->ia_type)) {
 		local->call_count = 1;
       
                 STACK_WIND (frame,
@@ -1924,7 +1925,7 @@ unify_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
 
 int32_t
 unify_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                struct stat *stbuf, int32_t valid)
+                struct iatt *stbuf, int32_t valid)
 {
 	unify_local_t *local = NULL;
 	xlator_t *child = NULL;
@@ -1967,8 +1968,8 @@ unify_truncate_cbk (call_frame_t *frame,
 		    xlator_t *this,
 		    int32_t op_ret,
 		    int32_t op_errno,
-		    struct stat *prebuf,
-                    struct stat *postbuf)
+		    struct iatt *prebuf,
+                    struct iatt *postbuf)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -1992,17 +1993,17 @@ unify_truncate_cbk (call_frame_t *frame,
 
 		if (op_ret >= 0) {
 			if (NS (this) == prev_frame->this) {
-				local->st_ino = postbuf->st_ino;
+				local->ia_ino = postbuf->ia_ino;
 				/* If the entry is directory, get the 
 				   stat from NS node */
-				if (S_ISDIR (postbuf->st_mode) ||
-				    !local->stbuf.st_blksize) {
+				if (IA_ISDIR (postbuf->ia_type) ||
+				    !local->stbuf.ia_blksize) {
 					local->stbuf = *prebuf;
                                         local->poststbuf = *postbuf;
 				}
 			}
 
-			if ((!S_ISDIR (postbuf->st_mode)) &&
+			if ((!IA_ISDIR (postbuf->ia_type)) &&
 			    (NS (this) != prev_frame->this)) {
 				/* If file, take the stat info from 
 				   Storage node. */
@@ -2014,9 +2015,9 @@ unify_truncate_cbk (call_frame_t *frame,
 	UNLOCK (&frame->lock);
     
 	if (!callcnt) {
-		if (local->st_ino) {
-			local->stbuf.st_ino = local->st_ino;
-                        local->poststbuf.st_ino = local->st_ino;
+		if (local->ia_ino) {
+			local->stbuf.ia_ino = local->ia_ino;
+                        local->poststbuf.ia_ino = local->ia_ino;
                 } else {
 			local->op_ret = -1;
                 }
@@ -2049,9 +2050,9 @@ unify_truncate (call_frame_t *frame,
 	/* Initialization */
 	INIT_LOCAL (frame, local);
 	loc_copy (&local->loc1, loc);
-	local->st_ino = loc->inode->ino;
+	local->ia_ino = loc->inode->ino;
 
-	if (S_ISDIR (loc->inode->st_mode)) {
+	if (IA_ISDIR (loc->inode->ia_type)) {
 		local->call_count = 1;
       
 		STACK_WIND (frame,
@@ -2102,7 +2103,7 @@ unify_readlink_cbk (call_frame_t *frame,
 		    int32_t op_ret,
 		    int32_t op_errno,
 		    const char *path,
-                    struct stat *sbuf)
+                    struct iatt *sbuf)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, path, sbuf);
 	return 0;
@@ -2163,8 +2164,8 @@ unify_unlink_cbk (call_frame_t *frame,
 		  xlator_t *this,
 		  int32_t op_ret,
 		  int32_t op_errno,
-                  struct stat *preparent,
-                  struct stat *postparent)
+                  struct iatt *preparent,
+                  struct iatt *postparent)
 {
 	int32_t callcnt = 0;
 	unify_private_t *priv = this->private;
@@ -2253,7 +2254,7 @@ unify_readv_cbk (call_frame_t *frame,
 		 int32_t op_errno,
 		 struct iovec *vector,
 		 int32_t count,
-		 struct stat *stbuf,
+		 struct iatt *stbuf,
                  struct iobref *iobref)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref);
@@ -2298,18 +2299,18 @@ unify_writev_cbk (call_frame_t *frame,
 		  xlator_t *this,
 		  int32_t op_ret,
 		  int32_t op_errno,
-                  struct stat *prebuf,
-		  struct stat *postbuf)
+                  struct iatt *prebuf,
+		  struct iatt *postbuf)
 {
 	unify_local_t *local = NULL;
 
         local = frame->local;
 
         local->stbuf = *prebuf;
-        local->stbuf.st_ino = local->st_ino;
+        local->stbuf.ia_ino = local->ia_ino;
 
         local->poststbuf = *postbuf;
-        local->poststbuf.st_ino = local->st_ino;
+        local->poststbuf.ia_ino = local->ia_ino;
 
 	STACK_UNWIND (frame, op_ret, op_errno,
                       &local->stbuf, &local->poststbuf);
@@ -2334,7 +2335,7 @@ unify_writev (call_frame_t *frame,
 	unify_local_t *local = NULL;
 
 	INIT_LOCAL (frame, local);
-        local->st_ino = fd->inode->ino;
+        local->ia_ino = fd->inode->ino;
 
 	fd_ctx_get (fd, this, &tmp_child);
 	child = (xlator_t *)(long)tmp_child;		     
@@ -2433,8 +2434,8 @@ unify_fsync_cbk (call_frame_t *frame,
 		 xlator_t *this,
 		 int32_t op_ret,
 		 int32_t op_errno,
-                 struct stat *prebuf,
-                 struct stat *postbuf)
+                 struct iatt *prebuf,
+                 struct iatt *postbuf)
 {
 	STACK_UNWIND (frame, op_ret, op_errno, prebuf, postbuf);
 	return 0;
@@ -2478,7 +2479,7 @@ unify_fstat (call_frame_t *frame,
 	UNIFY_CHECK_FD_AND_UNWIND_ON_ERR(fd);
 
 	INIT_LOCAL (frame, local);
-	local->st_ino = fd->inode->ino;
+	local->ia_ino = fd->inode->ino;
 
 	if (!fd_ctx_get (fd, this, &tmp_child)) {
 		/* If its set, then its file */
@@ -2819,7 +2820,7 @@ unify_setxattr (call_frame_t *frame,
 	local->failed = -1;
 	loc_copy (&local->loc1, loc);
 
-	if (S_ISDIR (loc->inode->st_mode)) {
+	if (IA_ISDIR (loc->inode->ia_type)) {
 
 		if (trav && trav->key && ZR_FILE_CONTENT_REQUEST(trav->key)) {
 			/* direct the storage xlators to change file 
@@ -2951,7 +2952,7 @@ unify_getxattr (call_frame_t *frame,
 	UNIFY_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
 	INIT_LOCAL (frame, local);
 
-	if (S_ISDIR (loc->inode->st_mode)) {
+	if (IA_ISDIR (loc->inode->ia_type)) {
 		local->call_count = priv->child_count;
 		for (index = 0; index < priv->child_count; index++)
 			STACK_WIND (frame,
@@ -3057,7 +3058,7 @@ unify_removexattr (call_frame_t *frame,
 	/* Initialization */
 	INIT_LOCAL (frame, local);
 
-	if (S_ISDIR (loc->inode->st_mode)) {
+	if (IA_ISDIR (loc->inode->ia_type)) {
 		local->call_count = priv->child_count;
 		for (index = 0; index < priv->child_count; index++)
 			STACK_WIND (frame, 		    
@@ -3110,8 +3111,8 @@ unify_mknod_unlink_cbk (call_frame_t *frame,
 			xlator_t *this,
 			int32_t op_ret,
 			int32_t op_errno,
-                        struct stat *preparent,
-                        struct stat *postparent)
+                        struct iatt *preparent,
+                        struct iatt *postparent)
 {
 	unify_local_t *local = frame->local;
 
@@ -3135,9 +3136,9 @@ unify_mknod_cbk (call_frame_t *frame,
 		 int32_t op_ret,
 		 int32_t op_errno,
 		 inode_t *inode,
-                 struct stat *buf,
-                 struct stat *preparent,
-                 struct stat *postparent)
+                 struct iatt *buf,
+                 struct iatt *preparent,
+                 struct iatt *postparent)
 {
 	unify_local_t *local = frame->local;
 
@@ -3155,7 +3156,7 @@ unify_mknod_cbk (call_frame_t *frame,
 	}
   
 	local->stbuf = *buf;
-	local->stbuf.st_ino = local->st_ino;
+	local->stbuf.ia_ino = local->ia_ino;
 	unify_local_wipe (local);
 	STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf,
                       &local->oldpreparent, &local->oldpostparent);
@@ -3172,9 +3173,9 @@ unify_ns_mknod_cbk (call_frame_t *frame,
 		    int32_t op_ret,
 		    int32_t op_errno,
 		    inode_t *inode,
-                    struct stat *buf,
-                    struct stat *preparent,
-                    struct stat *postparent)
+                    struct iatt *buf,
+                    struct iatt *preparent,
+                    struct iatt *postparent)
 {
 	struct sched_ops *sched_ops = NULL;
 	xlator_t *sched_xl = NULL;
@@ -3201,7 +3202,7 @@ unify_ns_mknod_cbk (call_frame_t *frame,
 	/* Create one inode for this entry */
 	local->op_ret = 0;
 	local->stbuf = *buf;
-	local->st_ino = buf->st_ino;
+	local->ia_ino = buf->ia_ino;
 
         local->oldpreparent = *preparent;
         local->oldpostparent = *postparent;
@@ -3283,8 +3284,8 @@ unify_symlink_unlink_cbk (call_frame_t *frame,
 			  xlator_t *this,
 			  int32_t op_ret,
 			  int32_t op_errno,
-                          struct stat *preparent,
-                          struct stat *postparent)
+                          struct iatt *preparent,
+                          struct iatt *postparent)
 {
 	unify_local_t *local = frame->local;
 	if (op_ret == -1)
@@ -3306,9 +3307,9 @@ unify_symlink_cbk (call_frame_t *frame,
 		   int32_t op_ret,
 		   int32_t op_errno,
 		   inode_t *inode,
-                   struct stat *buf,
-                   struct stat *preparent,
-                   struct stat *postparent)
+                   struct iatt *buf,
+                   struct iatt *preparent,
+                   struct iatt *postparent)
 {
 	unify_local_t *local = frame->local;
 
@@ -3330,7 +3331,7 @@ unify_symlink_cbk (call_frame_t *frame,
 	}
   
 	local->stbuf = *buf;
-	local->stbuf.st_ino = local->st_ino;
+	local->stbuf.ia_ino = local->ia_ino;
 	unify_local_wipe (local);
 	STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf,
                       &local->oldpreparent, &local->oldpostparent);
@@ -3348,9 +3349,9 @@ unify_ns_symlink_cbk (call_frame_t *frame,
 		      int32_t op_ret,
 		      int32_t op_errno,
 		      inode_t *inode,
-                      struct stat *buf,
-                      struct stat *preparent,
-                      struct stat *postparent)
+                      struct iatt *buf,
+                      struct iatt *preparent,
+                      struct iatt *postparent)
 {
 
 	struct sched_ops *sched_ops = NULL;
@@ -3375,7 +3376,7 @@ unify_ns_symlink_cbk (call_frame_t *frame,
   
 	/* Create one inode for this entry */
 	local->op_ret = 0;
-	local->st_ino = buf->st_ino;
+	local->ia_ino = buf->ia_ino;
   
         local->oldpreparent = *preparent;
         local->oldpostparent = *postparent;
@@ -3464,8 +3465,8 @@ unify_rename_unlink_cbk (call_frame_t *frame,
 			 xlator_t *this,
 			 int32_t op_ret,
 			 int32_t op_errno,
-                         struct stat *preparent,
-                         struct stat *postparent)
+                         struct iatt *preparent,
+                         struct iatt *postparent)
 {
 	int32_t callcnt = 0;
 	unify_local_t *local = frame->local;
@@ -3486,7 +3487,7 @@ unify_rename_unlink_cbk (call_frame_t *frame,
 	UNLOCK (&frame->lock);
 
 	if (!callcnt) {
-		local->stbuf.st_ino = local->st_ino;
+		local->stbuf.ia_ino = local->ia_ino;
 		unify_local_wipe (local);
 		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
 			      &local->stbuf);
@@ -3500,11 +3501,11 @@ unify_ns_rename_undo_cbk (call_frame_t *frame,
 			  xlator_t *this,
 			  int32_t op_ret,
 			  int32_t op_errno,
-			  struct stat *buf,
-                          struct stat *preoldparent,
-                          struct stat *postoldparent,
-                          struct stat *prenewparent,
-                          struct stat *postnewparent)
+			  struct iatt *buf,
+                          struct iatt *preoldparent,
+                          struct iatt *postoldparent,
+                          struct iatt *prenewparent,
+                          struct iatt *postnewparent)
 {
 	unify_local_t *local = frame->local;
 
@@ -3515,7 +3516,7 @@ unify_ns_rename_undo_cbk (call_frame_t *frame,
 			strerror (op_errno));
 	}
 
-	local->stbuf.st_ino = local->st_ino;
+	local->stbuf.ia_ino = local->ia_ino;
 	unify_local_wipe (local);
 	STACK_UNWIND (frame, local->op_ret, local->op_errno, &local->stbuf);
 	return 0;
@@ -3527,11 +3528,11 @@ unify_rename_cbk (call_frame_t *frame,
 		  xlator_t *this,
 		  int32_t op_ret,
 		  int32_t op_errno,
-		  struct stat *buf,
-                  struct stat *preoldparent,
-                  struct stat *postoldparent,
-                  struct stat *prenewparent,
-                  struct stat *postnewparent)
+		  struct iatt *buf,
+                  struct iatt *preoldparent,
+                  struct iatt *postoldparent,
+                  struct iatt *prenewparent,
+                  struct iatt *postnewparent)
 {
 	int32_t index = 0;
 	int32_t callcnt = 0;
@@ -3544,7 +3545,7 @@ unify_rename_cbk (call_frame_t *frame,
 	{
 		callcnt = --local->call_count;
 		if (op_ret >= 0) {
-			if (!S_ISDIR (buf->st_mode))
+			if (!IA_ISDIR (buf->ia_type))
 				local->stbuf = *buf;
 			local->op_ret = op_ret;
 		} else {
@@ -3559,8 +3560,8 @@ unify_rename_cbk (call_frame_t *frame,
 	UNLOCK (&frame->lock);
 
 	if (!callcnt) {
-		local->stbuf.st_ino = local->st_ino;
-		if (S_ISDIR (local->loc1.inode->st_mode)) {
+		local->stbuf.ia_ino = local->ia_ino;
+		if (IA_ISDIR (local->loc1.inode->ia_type)) {
 			unify_local_wipe (local);
 			STACK_UNWIND (frame, local->op_ret, local->op_errno,
                                       &local->stbuf, &local->oldpreparent,
@@ -3692,11 +3693,11 @@ unify_ns_rename_cbk (call_frame_t *frame,
 		     xlator_t *this,
 		     int32_t op_ret,
 		     int32_t op_errno,
-		     struct stat *buf,
-                     struct stat *preoldparent,
-                     struct stat *postoldparent,
-                     struct stat *prenewparent,
-                     struct stat *postnewparent)
+		     struct iatt *buf,
+                     struct iatt *preoldparent,
+                     struct iatt *postoldparent,
+                     struct iatt *prenewparent,
+                     struct iatt *postnewparent)
 {
 	int32_t index = 0;
 	int32_t callcnt = 0;
@@ -3719,7 +3720,7 @@ unify_ns_rename_cbk (call_frame_t *frame,
 	}
 
 	local->stbuf = *buf;
-	local->st_ino = buf->st_ino;
+	local->ia_ino = buf->ia_ino;
 
         local->oldpreparent = *preoldparent;
         local->oldpostparent = *postoldparent;
@@ -3727,7 +3728,7 @@ unify_ns_rename_cbk (call_frame_t *frame,
         local->newpostparent = *postnewparent;
 
 	/* Everything is fine. */
-	if (S_ISDIR (buf->st_mode)) {
+	if (IA_ISDIR (buf->ia_type)) {
 		local->call_count = priv->child_count;
 		for (index=0; index < priv->child_count; index++) {
 			STACK_WIND (frame,
@@ -3826,15 +3827,15 @@ unify_link_cbk (call_frame_t *frame,
 		int32_t op_ret,
 		int32_t op_errno,
 		inode_t *inode,
-                struct stat *buf,
-                struct stat *preparent,
-                struct stat *postparent)
+                struct iatt *buf,
+                struct iatt *preparent,
+                struct iatt *postparent)
 {
 	unify_local_t *local = frame->local;
 
 	if (op_ret >= 0) 
 		local->stbuf = *buf;
-	local->stbuf.st_ino = local->st_ino;
+	local->stbuf.ia_ino = local->ia_ino;
 
 	unify_local_wipe (local);
 	STACK_UNWIND (frame, op_ret, op_errno, inode, &local->stbuf,
@@ -3853,9 +3854,9 @@ unify_ns_link_cbk (call_frame_t *frame,
 		   int32_t op_ret,
 		   int32_t op_errno,
 		   inode_t *inode,
-                   struct stat *buf,
-                   struct stat *preparent,
-                   struct stat *postparent)
+                   struct iatt *buf,
+                   struct iatt *preparent,
+                   struct iatt *postparent)
 {
 	unify_private_t *priv = this->private;
 	unify_local_t *local = frame->local;
@@ -3878,7 +3879,7 @@ unify_ns_link_cbk (call_frame_t *frame,
 
 	/* Update inode for this entry */
 	local->op_ret = 0;
-	local->st_ino = buf->st_ino;
+	local->ia_ino = buf->ia_ino;
 
         local->oldpreparent = *preparent;
         local->oldpostparent = *postparent;
@@ -4178,7 +4179,7 @@ unify_forget (xlator_t *this,
         int16_t *list = NULL;
         uint64_t tmp_list = 0;
 
-        if (inode->st_mode && (!S_ISDIR(inode->st_mode))) {
+        if (inode->ia_type && (!IA_ISDIR(inode->ia_type))) {
                 inode_ctx_get (inode, this, &tmp_list);
                 if (tmp_list) {
                         list = (int16_t *)(long)tmp_list;
diff --git a/xlators/cluster/unify/src/unify.h b/xlators/cluster/unify/src/unify.h
index b81946697..cf3560d5b 100644
--- a/xlators/cluster/unify/src/unify.h
+++ b/xlators/cluster/unify/src/unify.h
@@ -96,16 +96,16 @@ struct _unify_local_t {
 	int32_t entry_count;
 	int32_t count;    // dir_entry_t count;
 	fd_t *fd;
-	struct stat stbuf;
-        struct stat stpre;
-        struct stat stpost;
+	struct iatt stbuf;
+        struct iatt stpre;
+        struct iatt stpost;
 	struct statvfs statvfs_buf;
 	struct timespec tv[2];
 	char *name;
 	int32_t revalidate;
 
-	ino_t st_ino;
-	nlink_t st_nlink;
+	ino_t ia_ino;
+	nlink_t ia_nlink;
   
 	dict_t *dict;
 
@@ -125,15 +125,15 @@ struct _unify_local_t {
 	struct unify_self_heal_struct *sh_struct;
 	loc_t loc1, loc2;
 
-        struct stat poststbuf;
+        struct iatt poststbuf;
         /* When not used for rename, old*
          * are used as the attrs for the current
          * parent directory.
          */
-        struct stat oldpreparent;
-        struct stat oldpostparent;
-        struct stat newpreparent;
-        struct stat newpostparent;
+        struct iatt oldpreparent;
+        struct iatt oldpostparent;
+        struct iatt newpreparent;
+        struct iatt newpostparent;
         int32_t wbflags;
 };
 typedef struct _unify_local_t unify_local_t;