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

8 files changed, 241 insertions, 237 deletions

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;