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Diffstat (limited to 'xlators/cluster/afr/src/afr-open.c')
-rw-r--r--xlators/cluster/afr/src/afr-open.c499
1 files changed, 108 insertions, 391 deletions
diff --git a/xlators/cluster/afr/src/afr-open.c b/xlators/cluster/afr/src/afr-open.c
index 306f5a8..02d8f3d 100644
--- a/xlators/cluster/afr/src/afr-open.c
+++ b/xlators/cluster/afr/src/afr-open.c
@@ -116,7 +116,7 @@ afr_open_cbk (call_frame_t *frame, void *cookie,
fd_ctx = (afr_fd_ctx_t *)(long) ctx;
- fd_ctx->opened_on[child_index] = 1;
+ fd_ctx->opened_on[child_index] = AFR_FD_OPENED;
fd_ctx->flags = local->cont.open.flags;
fd_ctx->wbflags = local->cont.open.wbflags;
}
@@ -141,7 +141,6 @@ unlock:
return 0;
}
-
int
afr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
fd_t *fd, int32_t wbflags)
@@ -180,7 +179,6 @@ afr_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
frame->local = local;
call_count = local->call_count;
-
loc_copy (&local->loc, loc);
local->cont.open.flags = flags;
@@ -209,446 +207,165 @@ out:
return 0;
}
-
-int
-afr_openfd_sh_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, fd_t *fd)
+//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_internal_lock_t *int_lock = NULL;
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- afr_fd_ctx_t *fd_ctx = NULL;
- uint64_t ctx = 0;
- int ret = 0;
- int call_count = 0;
- int child_index = (long) cookie;
-
- priv = this->private;
- local = frame->local;
- int_lock = &local->internal_lock;
-
- LOCK (&frame->lock);
- {
- if (op_ret >= 0) {
- ret = fd_ctx_get (fd, this, &ctx);
+ 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;
- if (ret < 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "failed to get fd context, %p", fd);
- goto out;
- }
-
- fd_ctx = (afr_fd_ctx_t *)(long) ctx;
-
- fd_ctx->opened_on[child_index] = 1;
-
- gf_log (this->name, GF_LOG_TRACE,
- "fd for %s opened successfully on subvolume %s",
- local->loc.path, priv->children[child_index]->name);
+ 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;
}
- }
-out:
- UNLOCK (&frame->lock);
-
- call_count = afr_frame_return (frame);
- if (call_count == 0) {
- int_lock->lock_cbk = local->transaction.done;
- local->transaction.resume (frame, this);
+ if (call) {
+ list_del_init (&paused_call->call_list);
+ list_add (&paused_call->call_list, list);
+ }
}
-
- return 0;
}
-
-static int
-__unopened_count (int child_count, unsigned int *opened_on, unsigned char *child_up)
+void
+afr_resume_calls (xlator_t *this, struct list_head *list)
{
- int i = 0;
- int count = 0;
-
- for (i = 0; i < child_count; i++) {
- if (!opened_on[i] && child_up[i])
- count++;
+ 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);
}
-
- return count;
}
-
int
-afr_openfd_sh_unwind (call_frame_t *frame, xlator_t *this, int32_t op_ret,
- int32_t op_errno)
+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)
{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- uint64_t ctx = 0;
- afr_fd_ctx_t *fd_ctx = NULL;
- int abandon = 0;
- int ret = 0;
- int i = 0;
- int call_count = 0;
+ 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};
- priv = this->private;
- local = frame->local;
+ priv = this->private;
+ local = frame->local;
- /*
- * Some subvolumes might have come up on which we never
- * opened this fd in the first place. Re-open fd's on those
- * subvolumes now.
- */
+ call_count = afr_frame_return (frame);
- ret = fd_ctx_get (local->fd, this, &ctx);
- if (ret < 0) {
+ //Note: No frame locking needed for this block of code
+ 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 (%s)",
- local->fd, local->loc.path);
- abandon = 1;
+ "failed to get fd context, %p", local->fd);
goto out;
}
- fd_ctx = (afr_fd_ctx_t *)(long) ctx;
-
LOCK (&local->fd->lock);
{
- call_count = __unopened_count (priv->child_count,
- fd_ctx->opened_on,
- local->child_up);
- for (i = 0; i < priv->child_count; i++) {
- fd_ctx->pre_op_done[i] = 0;
- fd_ctx->pre_op_piggyback[i] = 0;
+ if (op_ret >= 0) {
+ fd_ctx->opened_on[child_index] = AFR_FD_OPENED;
+ gf_log (this->name, GF_LOG_INFO, "fd for %s opened "
+ "successfully on subvolume %s", local->loc.path,
+ priv->children[child_index]->name);
+ } else {
+ //Change open status from OPENING to NOT OPENED.
+ fd_ctx->opened_on[child_index] = AFR_FD_NOT_OPENED;
}
- }
- UNLOCK (&local->fd->lock);
-
- if (call_count == 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "fd not open on any subvolume %p (%s)",
- local->fd, local->loc.path);
- abandon = 1;
- goto out;
- }
-
- local->call_count = call_count;
-
- for (i = 0; i < priv->child_count; i++) {
- if (!fd_ctx->opened_on[i] && local->child_up[i]) {
- gf_log (this->name, GF_LOG_TRACE,
- "opening fd for %s on subvolume %s",
- local->loc.path, priv->children[i]->name);
-
- STACK_WIND_COOKIE (frame, afr_openfd_sh_open_cbk,
- (void *)(long) i,
- priv->children[i],
- priv->children[i]->fops->open,
- &local->loc, fd_ctx->flags, local->fd,
- fd_ctx->wbflags);
-
- if (!--call_count)
- break;
+ if (call_count == 0) {
+ INIT_LIST_HEAD (&paused_calls);
+ afr_get_resumable_calls (this, fd_ctx, &paused_calls);
}
}
-
+ UNLOCK (&local->fd->lock);
out:
- if (abandon)
- local->transaction.resume (frame, this);
-
- return 0;
-}
-
-
-static int
-afr_prepare_loc (call_frame_t *frame, fd_t *fd)
-{
- 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);
+ if (call_count == 0) {
+ afr_resume_calls (this, &paused_calls);
+ if (local->fop_call_continue)
+ local->fop_call_continue (frame, this);
+ else
+ AFR_STACK_DESTROY (frame);
}
- local->loc.parent = inode_parent (local->loc.inode, 0, NULL);
-
return 0;
}
-
int
-afr_openfd_sh (call_frame_t *frame, xlator_t *this)
+afr_fix_open (call_frame_t *frame, xlator_t *this, afr_fd_ctx_t *fd_ctx,
+ int need_open_count, int *need_open)
{
- afr_local_t *local = NULL;
- afr_self_heal_t *sh = NULL;
- char sh_type_str[256] = {0,};
+ 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;
+ int32_t op_errno = 0;
+
+ GF_ASSERT (fd_ctx);
+ GF_ASSERT (need_open_count > 0);
+ GF_ASSERT (need_open);
local = frame->local;
- sh = &local->self_heal;
-
- GF_ASSERT (local->loc.path);
- /* forcibly trigger missing-entries self-heal */
-
- sh->need_missing_entry_self_heal = _gf_true;
- sh->need_gfid_self_heal = _gf_true;
- sh->data_lock_held = _gf_true;
- sh->need_data_self_heal = _gf_true;
- sh->type = local->fd->inode->ia_type;
- sh->background = _gf_false;
- sh->unwind = afr_openfd_sh_unwind;
-
- afr_self_heal_type_str_get(&local->self_heal,
- sh_type_str,
- sizeof(sh_type_str));
- gf_log (this->name, GF_LOG_INFO, "%s self-heal triggered. "
- "path: %s, reason: Replicate up down flush, data lock is held",
- sh_type_str, local->loc.path);
-
- afr_self_heal (frame, this, local->fd->inode);
-
- return 0;
-}
-
-
-int
-afr_openfd_flush_done (call_frame_t *frame, xlator_t *this)
-{
- afr_private_t *priv = NULL;
- afr_local_t *local = NULL;
-
- uint64_t ctx;
- afr_fd_ctx_t * fd_ctx = NULL;
-
- int _ret = -1;
-
priv = this->private;
- local = frame->local;
-
- LOCK (&local->fd->lock);
- {
- _ret = __fd_ctx_get (local->fd, this, &ctx);
- if (_ret < 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "failed to get fd context %p (%s)",
- local->fd, local->loc.path);
+ if (!local->fop_call_continue) {
+ open_frame = copy_frame (frame);
+ if (!open_frame) {
+ ret = -ENOMEM;
goto out;
}
-
- fd_ctx = (afr_fd_ctx_t *)(long) ctx;
-
- fd_ctx->down_count = priv->down_count;
- fd_ctx->up_count = priv->up_count;
- }
-out:
- UNLOCK (&local->fd->lock);
-
- afr_local_transaction_cleanup (local, this);
-
- gf_log (this->name, GF_LOG_TRACE,
- "The up/down flush is over");
-
- fd_unref (local->fd);
- local->openfd_flush_cbk (frame, this);
-
- return 0;
-}
-
-
-
-int
-afr_openfd_xaction (call_frame_t *frame, xlator_t *this, fd_t *fd)
-{
- afr_local_t * local = NULL;
-
- VALIDATE_OR_GOTO (frame, out);
- VALIDATE_OR_GOTO (this, out);
- VALIDATE_OR_GOTO (this->private, out);
-
- local = frame->local;
-
- local->op = GF_FOP_FLUSH;
-
- local->transaction.fop = afr_openfd_sh;
- local->transaction.done = afr_openfd_flush_done;
-
- local->transaction.start = 0;
- local->transaction.len = 0;
-
- gf_log (this->name, GF_LOG_TRACE,
- "doing up/down flush on fd=%p", fd);
-
- afr_transaction (frame, this, AFR_DATA_TRANSACTION);
-
-out:
- return 0;
-}
-
-
-
-int
-afr_openfd_xaction_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, fd_t *fd)
-{
- afr_internal_lock_t *int_lock = NULL;
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- int ret = 0;
- uint64_t ctx = 0;
- afr_fd_ctx_t *fd_ctx = NULL;
- int call_count = 0;
- int child_index = (long) cookie;
-
- priv = this->private;
- local = frame->local;
- int_lock = &local->internal_lock;
-
- LOCK (&frame->lock);
- {
- if (op_ret >= 0) {
- ret = fd_ctx_get (fd, this, &ctx);
-
- if (ret < 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "failed to get fd context %p (%s)",
- fd, local->loc.path);
- goto out;
- }
-
- fd_ctx = (afr_fd_ctx_t *)(long) ctx;
-
- fd_ctx->opened_on[child_index] = 1;
-
- gf_log (this->name, GF_LOG_TRACE,
- "fd for %s opened successfully on subvolume %s",
- local->loc.path, priv->children[child_index]->name);
+ ALLOC_OR_GOTO (open_local, afr_local_t, out);
+ ret = AFR_LOCAL_INIT (open_local, priv);
+ if (ret < 0) {
+ op_errno = -ret;
+ 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;
}
-out:
- UNLOCK (&frame->lock);
- call_count = afr_frame_return (frame);
-
- if (call_count == 0) {
- afr_openfd_xaction (frame, this, local->fd);
- }
-
- return 0;
-}
-
-
-int
-afr_openfd_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
-{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- uint64_t ctx = 0;
- afr_fd_ctx_t *fd_ctx = NULL;
- int no_open = 0;
- int ret = 0;
- int i = 0;
- int call_count = 0;
-
- priv = this->private;
- local = frame->local;
-
- /*
- * If the file is already deleted while the fd is open, no need to
- * perform the openfd flush, call the flush_cbk and get out.
- */
- ret = afr_prepare_loc (frame, fd);
- if (ret < 0) {
- local->openfd_flush_cbk (frame, this);
- goto out;
- }
+ open_local->call_count = need_open_count;
- /*
- * Some subvolumes might have come up on which we never
- * opened this fd in the first place. Re-open fd's on those
- * subvolumes now.
- */
-
- local->fd = fd_ref (fd);
-
- ret = fd_ctx_get (fd, this, &ctx);
- if (ret < 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "failed to get fd context %p (%s)",
- fd, local->loc.path);
- no_open = 1;
- goto out;
- }
-
- fd_ctx = (afr_fd_ctx_t *)(long) ctx;
-
- LOCK (&local->fd->lock);
- {
- call_count = __unopened_count (priv->child_count,
- fd_ctx->opened_on,
- local->child_up);
- }
- UNLOCK (&local->fd->lock);
-
- if (call_count == 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "fd not open on any subvolume %p (%s)",
- fd, local->loc.path);
- no_open = 1;
- goto out;
- }
-
- local->call_count = call_count;
+ gf_log (this->name, GF_LOG_DEBUG, "need open count: %d",
+ need_open_count);
for (i = 0; i < priv->child_count; i++) {
- if (!fd_ctx->opened_on[i] && local->child_up[i]) {
- gf_log (this->name, GF_LOG_TRACE,
+ if (need_open[i]) {
+ gf_log (this->name, GF_LOG_DEBUG,
"opening fd for %s on subvolume %s",
local->loc.path, priv->children[i]->name);
- STACK_WIND_COOKIE (frame, afr_openfd_xaction_open_cbk,
+ STACK_WIND_COOKIE (open_frame, afr_openfd_fix_open_cbk,
(void *)(long) i,
priv->children[i],
priv->children[i]->fops->open,
- &local->loc, fd_ctx->flags, fd,
- fd_ctx->wbflags);
+ &open_local->loc, fd_ctx->flags,
+ open_local->fd, fd_ctx->wbflags);
- if (!--call_count)
- break;
}
}
-
out:
- if (no_open)
- afr_openfd_xaction (frame, this, fd);
-
- return 0;
+ if (ret && open_frame)
+ AFR_STACK_DESTROY (open_frame);
+ return ret;
}