cluster/afr: Don't queue transactions during open-fd fix

Before Anonymous fds are available, afr had to queue up
transactions if the file is not opened on one of its
subvolumes. This happens until the attempt to open the
file either succeeds or fails. These attempts happen
until the file is successfully opened on the subvolume.
Now client xlator uses anonymous fds to perform the fops
if the fd used for the fop is not 'opened'.
Fops will be successful even when the file is not opened
so there is no need to queue up the transactions anymore in afr.
Open is attempted on the subvolume where it is not
opened independent of the fop.

Change-Id: Id1a4b4ebe6f89f9efe8f6a8247918b91247d0819
BUG: 913051
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4568
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

6 files changed, 167 insertions, 385 deletions

diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c
index e66be0358c9..efbb70902da 100644
--- a/xlators/cluster/afr/src/afr-common.c
+++ b/xlators/cluster/afr/src/afr-common.c
@@ -887,8 +887,6 @@ afr_local_cleanup (afr_local_t *local, xlator_t *this)
 
         GF_FREE (local->fresh_children);
 
-        GF_FREE (local->fd_open_on);
-
         { /* lookup */
                 if (local->cont.lookup.xattrs) {
                         afr_reset_xattr (local->cont.lookup.xattrs,
@@ -2456,7 +2454,6 @@ __afr_fd_ctx_set (xlator_t *this, fd_t *fd)
         }
 
 	pthread_mutex_init (&fd_ctx->delay_lock, NULL);
-        INIT_LIST_HEAD (&fd_ctx->paused_calls);
         INIT_LIST_HEAD (&fd_ctx->entries);
         fd_ctx->call_child = -1;
 
@@ -2575,8 +2572,6 @@ afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd)
         uint64_t        ctx = 0;
         afr_fd_ctx_t    *fd_ctx = NULL;
         int             ret = 0;
-        afr_fd_paused_call_t *paused_call = NULL;
-        afr_fd_paused_call_t *tmp = NULL;
 
         ret = fd_ctx_get (fd, this, &ctx);
         if (ret < 0)
@@ -2592,12 +2587,6 @@ afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd)
                 GF_FREE (fd_ctx->locked_on);
 
                 GF_FREE (fd_ctx->pre_op_piggyback);
-                list_for_each_entry_safe (paused_call, tmp, &fd_ctx->paused_calls,
-                                          call_list) {
-                        list_del_init (&paused_call->call_list);
-                        GF_FREE (paused_call);
-                }
-
                 GF_FREE (fd_ctx->lock_piggyback);
 
                 GF_FREE (fd_ctx->lock_acquired);
@@ -3986,14 +3975,6 @@ afr_transaction_local_init (afr_local_t *local, xlator_t *this)
         if (!local->fresh_children)
                 goto out;
 
-        if (local->fd) {
-                local->fd_open_on = GF_CALLOC (sizeof (*local->fd_open_on),
-                                               priv->child_count,
-                                               gf_afr_mt_char);
-                if (!local->fd_open_on)
-                        goto out;
-        }
-
         local->transaction.pre_op = GF_CALLOC (sizeof (*local->transaction.pre_op),
                                                priv->child_count,
                                                gf_afr_mt_char);
@@ -4262,3 +4243,16 @@ afr_prepare_new_entry_pending_matrix (int32_t **pending,
                 }
         }
 }
+
+gf_boolean_t
+afr_is_fd_fixable (fd_t *fd)
+{
+        if (!fd || !fd->inode)
+                return _gf_false;
+        else if (fd_is_anonymous (fd))
+                return _gf_false;
+        else if (uuid_is_null (fd->inode->gfid))
+                return _gf_false;
+
+        return _gf_true;
+}
diff --git a/xlators/cluster/afr/src/afr-inode-read.c b/xlators/cluster/afr/src/afr-inode-read.c
index 1263749b7fd..c798e19328f 100644
--- a/xlators/cluster/afr/src/afr-inode-read.c
+++ b/xlators/cluster/afr/src/afr-inode-read.c
@@ -382,11 +382,8 @@ afr_fstat (call_frame_t *frame, xlator_t *this,
 
         local->fd = fd_ref (fd);
 
-        ret = afr_open_fd_fix (frame, this, _gf_false);
-        if (ret) {
-                op_errno = -ret;
-                goto out;
-        }
+        afr_open_fd_fix (fd, this);
+
         STACK_WIND_COOKIE (frame, afr_fstat_cbk, (void *) (long) call_child,
                            children[call_child],
                            children[call_child]->fops->fstat,
@@ -1856,11 +1853,8 @@ afr_readv (call_frame_t *frame, xlator_t *this,
         local->cont.readv.offset     = offset;
         local->cont.readv.flags      = flags;
 
-        ret = afr_open_fd_fix (frame, this, _gf_false);
-        if (ret) {
-                op_errno = -ret;
-                goto out;
-        }
+        afr_open_fd_fix (fd, this);
+
         STACK_WIND_COOKIE (frame, afr_readv_cbk,
                            (void *) (long) call_child,
                            children[call_child],
diff --git a/xlators/cluster/afr/src/afr-inode-write.c b/xlators/cluster/afr/src/afr-inode-write.c
index 99fa027d03c..a83223569d0 100644
--- a/xlators/cluster/afr/src/afr-inode-write.c
+++ b/xlators/cluster/afr/src/afr-inode-write.c
@@ -328,153 +328,74 @@ out:
         return 0;
 }
 
-static int
-afr_prepare_loc (call_frame_t *frame, fd_t *fd)
+static void
+afr_trigger_open_fd_self_heal (fd_t *fd, xlator_t *this)
 {
-        afr_local_t    *local = NULL;
-        char           *name = NULL;
-        char           *path = NULL;
-        int             ret = 0;
-
-        if ((!fd) || (!fd->inode))
-                return -1;
-
-        local = frame->local;
-        ret = inode_path (fd->inode, NULL, (char **)&path);
-        if (ret <= 0) {
-                gf_log (frame->this->name, GF_LOG_DEBUG,
-                        "Unable to get path for gfid: %s",
-                        uuid_utoa (fd->inode->gfid));
-                return -1;
-        }
-
-        if (local->loc.path) {
-                if (strcmp (path, local->loc.path))
-                        gf_log (frame->this->name, GF_LOG_DEBUG,
-                                "overwriting old loc->path %s with %s",
-                                local->loc.path, path);
-                GF_FREE ((char *)local->loc.path);
-        }
-        local->loc.path = path;
-
-        name = strrchr (local->loc.path, '/');
-        if (name)
-                name++;
-        local->loc.name = name;
-
-        if (local->loc.inode) {
-                inode_unref (local->loc.inode);
-        }
-        local->loc.inode = inode_ref (fd->inode);
-
-        if (local->loc.parent) {
-                inode_unref (local->loc.parent);
+        call_frame_t    *frame   = NULL;
+        afr_local_t     *local   = NULL;
+        afr_self_heal_t *sh      = NULL;
+        char            *reason  = NULL;
+        int32_t         op_errno = 0;
+        int             ret      = 0;
+
+        if (!fd || !fd->inode || uuid_is_null (fd->inode->gfid)) {
+                gf_log_callingfn (this->name, GF_LOG_ERROR, "Invalid args: "
+                                  "fd: %p, inode: %p", fd,
+                                  fd ? fd->inode : NULL);
+                goto out;
         }
 
-        local->loc.parent = inode_parent (local->loc.inode, 0, NULL);
-
-        return 0;
-}
-
-afr_fd_paused_call_t*
-afr_paused_call_create (call_frame_t *frame)
-{
-        afr_local_t             *local = NULL;
-        afr_fd_paused_call_t   *paused_call = NULL;
+        frame = create_frame (this, this->ctx->pool);
+        if (!frame)
+                goto out;
 
+        AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out);
         local = frame->local;
-        GF_ASSERT (local->fop_call_continue);
-
-        paused_call = GF_CALLOC (1, sizeof (*paused_call),
-                                  gf_afr_fd_paused_call_t);
-        if (paused_call) {
-                INIT_LIST_HEAD (&paused_call->call_list);
-                paused_call->frame = frame;
-        }
-
-        return paused_call;
-}
-
-static int
-afr_pause_fd_fop (call_frame_t *frame, xlator_t *this, afr_fd_ctx_t *fd_ctx)
-{
-        afr_fd_paused_call_t *paused_call = NULL;
-        int                    ret = 0;
-
-        paused_call = afr_paused_call_create (frame);
-        if (paused_call)
-                list_add (&paused_call->call_list, &fd_ctx->paused_calls);
-        else
-                ret = -ENOMEM;
-
-        return ret;
-}
+        ret = afr_local_init (local, this->private, &op_errno);
+        if (ret < 0)
+                goto out;
 
-static void
-afr_trigger_open_fd_self_heal (call_frame_t *frame, xlator_t *this)
-{
-        afr_local_t             *local = NULL;
-        afr_self_heal_t         *sh = NULL;
-        inode_t                 *inode = NULL;
-        char                    *reason = NULL;
+        local->loc.inode = inode_ref (fd->inode);
+        ret = loc_path (&local->loc, NULL);
+        if (ret < 0)
+                goto out;
 
-        local = frame->local;
         sh    = &local->self_heal;
-        inode = local->fd->inode;
-
-        sh->do_missing_entry_self_heal = _gf_true;
-        sh->do_gfid_self_heal = _gf_true;
-        sh->do_data_self_heal = _gf_true;
+        sh->do_metadata_self_heal = _gf_true;
+        if (fd->inode->ia_type == IA_IFREG)
+                sh->do_data_self_heal = _gf_true;
+        else if (fd->inode->ia_type == IA_IFDIR)
+                sh->do_entry_self_heal = _gf_true;
 
         reason = "subvolume came online";
-        afr_launch_self_heal (frame, this, inode, _gf_true, inode->ia_type,
-                              reason, NULL, NULL);
+        afr_launch_self_heal (frame, this, fd->inode, _gf_true,
+                              fd->inode->ia_type, reason, NULL, NULL);
+        return;
+out:
+        AFR_STACK_DESTROY (frame);
 }
 
-int
-afr_open_fd_fix (call_frame_t *frame, xlator_t *this, gf_boolean_t pause_fop)
+void
+afr_open_fd_fix (fd_t *fd, xlator_t *this)
 {
-        int                     ret = 0;
-        int                     i   = 0;
-        afr_fd_ctx_t            *fd_ctx = NULL;
-        inode_t                 *inode = NULL;
-        gf_boolean_t            need_self_heal = _gf_false;
-        int                     *need_open = NULL;
-        int                     need_open_count = 0;
-        afr_local_t             *local = NULL;
-        afr_private_t           *priv = NULL;
-        gf_boolean_t            fop_continue = _gf_true;
+        int           ret             = 0;
+        int           i               = 0;
+        afr_fd_ctx_t  *fd_ctx         = NULL;
+        gf_boolean_t  need_self_heal  = _gf_false;
+        int           *need_open      = NULL;
+        size_t        need_open_count = 0;
+        afr_private_t *priv           = NULL;
 
-        local = frame->local;
         priv  = this->private;
 
-        GF_ASSERT (local->fd);
-
-        inode = local->fd->inode;
-        //gfid is not set in rebalance, that case needs to be handled.
-        if (fd_is_anonymous (local->fd) ||
-            !inode || uuid_is_null (inode->gfid)) {
-                fop_continue = _gf_true;
-                goto out;
-        }
-
-        if (pause_fop)
-                GF_ASSERT (local->fop_call_continue);
-
-        ret = afr_prepare_loc (frame, local->fd);
-        if (ret < 0) {
-                //File does not exist we cant open it.
-                ret = 0;
+        if (!afr_is_fd_fixable (fd))
                 goto out;
-        }
 
-        fd_ctx = afr_fd_ctx_get (local->fd, this);
-        if (!fd_ctx) {
-                ret = -EINVAL;
+        fd_ctx = afr_fd_ctx_get (fd, this);
+        if (!fd_ctx)
                 goto out;
-        }
 
-        LOCK (&local->fd->lock);
+        LOCK (&fd->lock);
         {
                 if (fd_ctx->up_count < priv->up_count) {
                         need_self_heal = _gf_true;
@@ -482,55 +403,34 @@ afr_open_fd_fix (call_frame_t *frame, xlator_t *this, gf_boolean_t pause_fop)
                         fd_ctx->down_count = priv->down_count;
                 }
 
+                need_open = alloca (priv->child_count * sizeof (*need_open));
                 for (i = 0; i < priv->child_count; i++) {
-                        if ((fd_ctx->opened_on[i] == AFR_FD_NOT_OPENED) &&
-                            local->child_up[i]) {
-                                fd_ctx->opened_on[i] = AFR_FD_OPENING;
-                                if (!need_open)
-                                        need_open = GF_CALLOC (priv->child_count,
-                                                               sizeof (*need_open),
-                                                               gf_afr_mt_int32_t);
-                                need_open[i] = 1;
-                                need_open_count++;
-                        } else if (pause_fop && local->child_up[i] &&
-                                   (fd_ctx->opened_on[i] == AFR_FD_OPENING)) {
-                                local->fop_paused = _gf_true;
-                        }
-                }
+                        need_open[i] = 0;
+                        if (fd_ctx->opened_on[i] != AFR_FD_NOT_OPENED)
+                                continue;
+
+                        if (!priv->child_up[i])
+                                continue;
+
+                        fd_ctx->opened_on[i] = AFR_FD_OPENING;
 
-                if (local->fop_paused) {
-                        GF_ASSERT (pause_fop);
-                        gf_log (this->name, GF_LOG_INFO, "Pause fd %p",
-                                local->fd);
-                        ret = afr_pause_fd_fop (frame, this, fd_ctx);
-                        if (ret)
-                                goto unlock;
-                        fop_continue = _gf_false;
+                        need_open[i] = 1;
+                        need_open_count++;
                 }
         }
-unlock:
-        UNLOCK (&local->fd->lock);
-        if (ret) {
-                gf_log (this->name, GF_LOG_ERROR, "Failed to fix fd for %s",
-                        local->loc.path);
-                fop_continue = _gf_false;
+        UNLOCK (&fd->lock);
+        if (ret)
                 goto out;
-        }
 
         if (need_self_heal)
-                afr_trigger_open_fd_self_heal (frame, this);
+                afr_trigger_open_fd_self_heal (fd, this);
 
         if (!need_open_count)
                 goto out;
 
-        gf_log (this->name, GF_LOG_INFO, "Opening fd %p", local->fd);
-        afr_fix_open (frame, this, fd_ctx, need_open_count, need_open);
-        fop_continue = _gf_false;
+        afr_fix_open (this, fd, need_open_count, need_open);
 out:
-        GF_FREE (need_open);
-        if (fop_continue && local->fop_call_continue)
-                local->fop_call_continue (frame, this);
-        return ret;
+        return;
 }
 
 int
@@ -570,13 +470,10 @@ afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
         local->cont.writev.iobref     = iobref_ref (iobref);
 
         local->fd                = fd_ref (fd);
-        local->fop_call_continue = afr_do_writev;
 
-        ret = afr_open_fd_fix (frame, this, _gf_true);
-        if (ret) {
-                op_errno = -ret;
-                goto out;
-        }
+        afr_open_fd_fix (fd, this);
+
+        afr_do_writev (frame, this);
 
         ret = 0;
 out:
@@ -1026,13 +923,10 @@ afr_ftruncate (call_frame_t *frame, xlator_t *this,
         local->cont.ftruncate.offset  = offset;
 
         local->fd = fd_ref (fd);
-        local->fop_call_continue = afr_do_ftruncate;
 
-        ret = afr_open_fd_fix (frame, this, _gf_true);
-        if (ret) {
-                op_errno = -ret;
-                goto out;
-        }
+        afr_open_fd_fix (fd, this);
+
+        afr_do_ftruncate (frame, this);
 
         ret = 0;
 out:
@@ -1448,11 +1342,7 @@ afr_fsetattr (call_frame_t *frame, xlator_t *this,
 
         local->fd                 = fd_ref (fd);
 
-        ret = afr_open_fd_fix (transaction_frame, this, _gf_false);
-        if (ret) {
-                op_errno = -ret;
-                goto out;
-        }
+        afr_open_fd_fix (fd, this);
 
         local->transaction.main_frame = frame;
         local->transaction.start   = LLONG_MAX - 1;
diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c
index cb74fc80e56..e091a7939fe 100644
--- a/xlators/cluster/afr/src/afr-lk-common.c
+++ b/xlators/cluster/afr/src/afr-lk-common.c
@@ -148,16 +148,9 @@ internal_lock_count (call_frame_t *frame, xlator_t *this)
         local = frame->local;
         priv  = this->private;
 
-        if (local->fd) {
-                for (i = 0; i < priv->child_count; i++) {
-                        if (local->child_up[i] && local->fd_open_on[i])
-                                ++call_count;
-                }
-        } else {
-                for (i = 0; i < priv->child_count; i++) {
-                        if (local->child_up[i])
-                                ++call_count;
-                }
+        for (i = 0; i < priv->child_count; i++) {
+                if (local->child_up[i])
+                        ++call_count;
         }
 
         return call_count;
@@ -1024,8 +1017,6 @@ _is_lock_wind_needed (afr_local_t *local, int child_index)
 {
         if (!local->child_up[child_index])
                 return _gf_false;
-        else if (local->fd && !local->fd_open_on[child_index])
-                return _gf_false;
 
         return _gf_true;
 }
@@ -1293,20 +1284,6 @@ afr_nonblocking_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         return 0;
 }
 
-void
-afr_mark_fd_open_on (afr_local_t *local, afr_fd_ctx_t *fd_ctx,
-                       size_t child_count)
-{
-        int             i = 0;
-
-        GF_ASSERT (local->fd_open_on);
-
-        memset (local->fd_open_on, 0, sizeof (*local->fd_open_on)*child_count);
-        for (i = 0; i < child_count; i++)
-                if (fd_ctx->opened_on[i] == AFR_FD_OPENED)
-                        local->fd_open_on[i] = 1;
-}
-
 int
 afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
 {
@@ -1342,7 +1319,6 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
                         return -1;
                 }
 
-                afr_mark_fd_open_on (local, fd_ctx, priv->child_count);
                 call_count = int_lock->lockee_count * internal_lock_count (frame, this);
                 int_lock->lk_call_count = call_count;
                 int_lock->lk_expected_count = call_count;
@@ -1359,7 +1335,7 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
                 for (i = 0; i < int_lock->lockee_count*priv->child_count; i++) {
                         index = i%copies;
                         lockee_no = i/copies;
-                        if (local->child_up[index] && local->fd_open_on[index]) {
+                        if (local->child_up[index]) {
                                 AFR_TRACE_ENTRYLK_IN (frame, this, AFR_ENTRYLK_NB_TRANSACTION,
                                                       AFR_LOCK_OP,
                                                       int_lock->lockee[lockee_no].basename,
@@ -1536,7 +1512,6 @@ afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this)
                         goto out;
                 }
 
-                afr_mark_fd_open_on (local, fd_ctx, priv->child_count);
                 call_count = internal_lock_count (frame, this);
                 int_lock->lk_call_count = call_count;
                 int_lock->lk_expected_count = call_count;
@@ -1551,7 +1526,7 @@ afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this)
                 /* Send non-blocking inodelk calls only on up children
                    and where the fd has been opened */
                 for (i = 0; i < priv->child_count; i++) {
-                        if (!local->child_up[i] || !local->fd_open_on[i])
+                        if (!local->child_up[i])
                                 continue;
 
                         flock_use = &flock;
diff --git a/xlators/cluster/afr/src/afr-open.c b/xlators/cluster/afr/src/afr-open.c
index c0be197f212..643a5d692df 100644
--- a/xlators/cluster/afr/src/afr-open.c
+++ b/xlators/cluster/afr/src/afr-open.c
@@ -249,189 +249,126 @@ out:
         return 0;
 }
 
-//NOTE: this function should be called with holding the lock on
-//fd to which fd_ctx belongs
-void
-afr_get_resumable_calls (xlator_t *this, afr_fd_ctx_t *fd_ctx,
-                         struct list_head *list)
-{
-        afr_fd_paused_call_t *paused_call = NULL;
-        afr_fd_paused_call_t *tmp = NULL;
-        afr_local_t           *call_local  = NULL;
-        afr_private_t         *priv        = NULL;
-        int                    i = 0;
-        gf_boolean_t           call = _gf_false;
-
-        priv = this->private;
-        list_for_each_entry_safe (paused_call, tmp, &fd_ctx->paused_calls,
-                                  call_list) {
-                call = _gf_true;
-                call_local = paused_call->frame->local;
-                for (i = 0; i < priv->child_count; i++) {
-                        if (call_local->child_up[i] &&
-                            (fd_ctx->opened_on[i] == AFR_FD_OPENING))
-                                call = _gf_false;
-                }
-
-                if (call) {
-                        list_del_init (&paused_call->call_list);
-                        list_add (&paused_call->call_list, list);
-                }
-        }
-}
-
-void
-afr_resume_calls (xlator_t *this, struct list_head *list)
-{
-        afr_fd_paused_call_t *paused_call = NULL;
-        afr_fd_paused_call_t *tmp = NULL;
-        afr_local_t           *call_local  = NULL;
-
-        list_for_each_entry_safe (paused_call, tmp, list, call_list) {
-                list_del_init (&paused_call->call_list);
-                call_local = paused_call->frame->local;
-                call_local->fop_call_continue (paused_call->frame, this);
-                GF_FREE (paused_call);
-        }
-}
-
 int
 afr_openfd_fix_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata)
+                         int32_t op_ret, int32_t op_errno, fd_t *fd,
+                         dict_t *xdata)
 {
-        afr_local_t           *local       = NULL;
-        afr_private_t         *priv        = NULL;
-        afr_fd_ctx_t          *fd_ctx      = NULL;
-        int                    call_count  = 0;
-        int                    child_index = (long) cookie;
-        struct list_head       paused_calls = {0};
-        gf_boolean_t           fop_paused = _gf_false;
-        fd_t                   *local_fd  = NULL;
+        afr_local_t   *local      = NULL;
+        afr_private_t *priv       = NULL;
+        afr_fd_ctx_t  *fd_ctx     = NULL;
+        int           call_count  = 0;
+        int           child_index = (long) cookie;
 
         priv     = this->private;
         local    = frame->local;
-        fop_paused = local->fop_paused;
 
         if (op_ret >= 0) {
-                gf_log (this->name, GF_LOG_INFO, "fd for %s opened "
+                gf_log (this->name, GF_LOG_DEBUG, "fd for %s opened "
                         "successfully on subvolume %s", local->loc.path,
                         priv->children[child_index]->name);
+        } else {
+                gf_log (this->name, GF_LOG_ERROR, "Failed to open %s "
+                        "on subvolume %s", local->loc.path,
+                        priv->children[child_index]->name);
         }
 
-        local_fd = fd_ref (local->fd);
-        call_count = afr_frame_return (frame);
-        //Note: Do not access any thing using the frame outside call_count 0
-
-        //Note: No frame locking needed for this block of code
-        fd_ctx = afr_fd_ctx_get (local_fd, this);
+        fd_ctx = afr_fd_ctx_get (local->fd, this);
         if (!fd_ctx) {
                 gf_log (this->name, GF_LOG_WARNING,
-                        "failed to get fd context, %p", local_fd);
+                        "failed to get fd context, %p", local->fd);
                 goto out;
         }
 
-        LOCK (&local_fd->lock);
+        LOCK (&local->fd->lock);
         {
                 if (op_ret >= 0) {
                         fd_ctx->opened_on[child_index] = AFR_FD_OPENED;
                 } else {
                         fd_ctx->opened_on[child_index] = AFR_FD_NOT_OPENED;
                 }
-                if (call_count == 0) {
-                        INIT_LIST_HEAD (&paused_calls);
-                        afr_get_resumable_calls (this, fd_ctx, &paused_calls);
-                }
         }
-        UNLOCK (&local_fd->lock);
+        UNLOCK (&local->fd->lock);
 out:
-        if (call_count == 0) {
-                afr_resume_calls (this, &paused_calls);
-                //If the fop is paused then resume_calls will continue the fop
-                if (fop_paused)
-                        goto done;
-
-                if (local->fop_call_continue)
-                        local->fop_call_continue (frame, this);
-                else
-                        AFR_STACK_DESTROY (frame);
-        }
+        call_count = afr_frame_return (frame);
+        if (call_count == 0)
+                AFR_STACK_DESTROY (frame);
 
-done:
-        fd_unref (local_fd);
         return 0;
 }
 
-int
-afr_fix_open (call_frame_t *frame, xlator_t *this, afr_fd_ctx_t *fd_ctx,
-              int need_open_count, int *need_open)
+void
+afr_fix_open (xlator_t *this, fd_t *fd, size_t need_open_count, int *need_open)
 {
-        afr_local_t       *local = NULL;
-        afr_private_t     *priv  = NULL;
-        int               i      = 0;
-        call_frame_t      *open_frame = NULL;
-        afr_local_t      *open_local = NULL;
-        int               ret    = -1;
-        ia_type_t         ia_type = IA_INVAL;
-        int32_t           op_errno = 0;
-
-        GF_ASSERT (fd_ctx);
-        GF_ASSERT (need_open_count > 0);
-        GF_ASSERT (need_open);
+        afr_private_t *priv    = NULL;
+        int           i        = 0;
+        call_frame_t  *frame   = NULL;
+        afr_local_t   *local   = NULL;
+        int           ret      = -1;
+        int32_t       op_errno = 0;
+        afr_fd_ctx_t  *fd_ctx  = NULL;
 
-        local = frame->local;
         priv  = this->private;
-        if (!local->fop_call_continue) {
-                open_frame = copy_frame (frame);
-                if (!open_frame) {
-                        ret = -ENOMEM;
-                        goto out;
-                }
-                AFR_LOCAL_ALLOC_OR_GOTO (open_frame->local, out);
-                open_local = open_frame->local;
-                ret = afr_local_init (open_local, priv, &op_errno);
-                if (ret < 0)
-                        goto out;
-                loc_copy (&open_local->loc, &local->loc);
-                open_local->fd = fd_ref (local->fd);
-        } else {
-                ret = 0;
-                open_frame = frame;
-                open_local = local;
+
+        if (!afr_is_fd_fixable (fd) || !need_open || !need_open_count)
+                goto out;
+
+        fd_ctx = afr_fd_ctx_get (fd, this);
+        if (!fd_ctx) {
+                ret = -1;
+                goto out;
         }
 
-        open_local->call_count = need_open_count;
+        frame = create_frame (this, this->ctx->pool);
+        if (!frame) {
+                ret = -1;
+                goto out;
+        }
 
-        gf_log (this->name, GF_LOG_DEBUG, "need open count: %d",
+        AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out);
+        local = frame->local;
+        ret = afr_local_init (local, priv, &op_errno);
+        if (ret < 0)
+                goto out;
+
+        local->loc.inode = inode_ref (fd->inode);
+        ret = loc_path (&local->loc, NULL);
+        if (ret < 0)
+                goto out;
+
+        local->fd = fd_ref (fd);
+        local->call_count = need_open_count;
+
+        gf_log (this->name, GF_LOG_DEBUG, "need open count: %zd",
                 need_open_count);
 
-        ia_type = open_local->fd->inode->ia_type;
-        GF_ASSERT (ia_type != IA_INVAL);
         for (i = 0; i < priv->child_count; i++) {
                 if (!need_open[i])
                         continue;
-                if (IA_IFDIR == ia_type) {
+
+                if (IA_IFDIR == fd->inode->ia_type) {
                         gf_log (this->name, GF_LOG_DEBUG,
                                 "opening fd for dir %s on subvolume %s",
                                 local->loc.path, priv->children[i]->name);
 
-                        STACK_WIND_COOKIE (open_frame, afr_openfd_fix_open_cbk,
+                        STACK_WIND_COOKIE (frame, afr_openfd_fix_open_cbk,
                                            (void*) (long) i,
                                            priv->children[i],
                                            priv->children[i]->fops->opendir,
-                                           &open_local->loc, open_local->fd,
+                                           &local->loc, local->fd,
                                            NULL);
                 } else {
                         gf_log (this->name, GF_LOG_DEBUG,
                                 "opening fd for file %s on subvolume %s",
                                 local->loc.path, priv->children[i]->name);
 
-                        STACK_WIND_COOKIE (open_frame, afr_openfd_fix_open_cbk,
+                        STACK_WIND_COOKIE (frame, afr_openfd_fix_open_cbk,
                                            (void *)(long) i,
                                            priv->children[i],
                                            priv->children[i]->fops->open,
-                                           &open_local->loc,
+                                           &local->loc,
                                            fd_ctx->flags & (~O_TRUNC),
-                                           open_local->fd, NULL);
+                                           local->fd, NULL);
                 }
 
         }
@@ -439,8 +376,7 @@ afr_fix_open (call_frame_t *frame, xlator_t *this, afr_fd_ctx_t *fd_ctx,
         ret = 0;
 out:
         if (op_errno)
-                ret = -op_errno;
-        if (ret && open_frame)
-                AFR_STACK_DESTROY (open_frame);
-        return ret;
+                ret = -1; //For handling ALLOC_OR_GOTO
+        if (ret && frame)
+                AFR_STACK_DESTROY (frame);
 }
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index f4ebf435699..978339017a2 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -425,7 +425,6 @@ typedef struct _afr_local {
         loc_t newloc;
 
         fd_t *fd;
-        unsigned char *fd_open_on;
 
         glusterfs_fop_t fop;
 
@@ -449,9 +448,6 @@ typedef struct _afr_local {
         int      optimistic_change_log;
 	gf_boolean_t      delayed_post_op;
 
-        gf_boolean_t    fop_paused;
-        int (*fop_call_continue) (call_frame_t *frame, xlator_t *this);
-
         /*
           This struct contains the arguments for the "continuation"
           (scheme-like) of fops
@@ -703,11 +699,6 @@ typedef enum {
 } afr_fd_open_status_t;
 
 typedef struct {
-        struct list_head call_list;
-        call_frame_t    *frame;
-} afr_fd_paused_call_t;
-
-typedef struct {
         unsigned int *pre_op_done;
         afr_fd_open_status_t *opened_on; /* which subvolumes the fd is open on */
         unsigned int *pre_op_piggyback;
@@ -726,7 +717,6 @@ typedef struct {
         struct list_head entries; /* needed for readdir failover */
 
         unsigned char *locked_on; /* which subvolumes locks have been successful */
-	struct list_head  paused_calls; /* queued calls while fix_open happens  */
 
 	/* used for delayed-post-op optimization */
 	pthread_mutex_t    delay_lock;
@@ -1021,11 +1011,11 @@ afr_launch_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode,
                       int (*unwind) (call_frame_t *frame, xlator_t *this,
                                      int32_t op_ret, int32_t op_errno,
                                      int32_t sh_failed));
-int
-afr_fix_open (call_frame_t *frame, xlator_t *this, afr_fd_ctx_t *fd_ctx,
-              int need_open_count, int *need_open);
-int
-afr_open_fd_fix (call_frame_t *frame, xlator_t *this, gf_boolean_t pause_fop);
+void
+afr_fix_open (xlator_t *this, fd_t *fd, size_t need_open_count, int *need_open);
+
+void
+afr_open_fd_fix (fd_t *fd, xlator_t *this);
 int
 afr_set_elem_count_get (unsigned char *elems, int child_count);
 
@@ -1059,6 +1049,9 @@ afr_is_errno_set (int *child_errno, int child);
 gf_boolean_t
 afr_is_errno_unset (int *child_errno, int child);
 
+gf_boolean_t
+afr_is_fd_fixable (fd_t *fd);
+
 void
 afr_prepare_new_entry_pending_matrix (int32_t **pending,
                                       gf_boolean_t (*is_pending) (int *, int),