From 5bd8f537da3fe570e481713a1c2c4ee6e88ac38e Mon Sep 17 00:00:00 2001 From: shishir gowda Date: Tue, 2 Aug 2011 15:30:06 +0530 Subject: DHT rename: Recreate linkfile after unlink This is done, so that there is no gfid mismatch. Unlink the older linkfile if it exists, and recreate it with the correct gfid. Also removed unused rename related code. Change-Id: Ice0cdff51db786dafb1a019f7642c7d000e8c5f3 BUG: 2522 Reviewed-on: http://review.gluster.com/142 Tested-by: Gluster Build System Reviewed-by: Anand Avati --- xlators/cluster/dht/src/dht-common.h | 3 - xlators/cluster/dht/src/dht-linkfile.c | 140 --------------------------------- xlators/cluster/dht/src/dht-rename.c | 51 +++++++++++- 3 files changed, 50 insertions(+), 144 deletions(-) diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h index 2fe85d00e5f..3a4e6e57202 100644 --- a/xlators/cluster/dht/src/dht-common.h +++ b/xlators/cluster/dht/src/dht-common.h @@ -330,9 +330,6 @@ int dht_rename_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this, inode_t *inode, struct iatt *stbuf, struct iatt *preparent, struct iatt *postparent); -int dht_linkfile_recreate(call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk, - xlator_t *tovol, xlator_t *fromvol, loc_t *loc); - int dht_fix_directory_layout (call_frame_t *frame, dht_selfheal_dir_cbk_t dir_cbk, dht_layout_t *layout); diff --git a/xlators/cluster/dht/src/dht-linkfile.c b/xlators/cluster/dht/src/dht-linkfile.c index e936f3119a6..89fc32725ec 100644 --- a/xlators/cluster/dht/src/dht-linkfile.c +++ b/xlators/cluster/dht/src/dht-linkfile.c @@ -189,143 +189,3 @@ dht_linkfile_subvol (xlator_t *this, inode_t *inode, struct iatt *stbuf, out: return subvol; } - -int -dht_recreate_linkfile_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, - struct iatt *preparent, struct iatt *postparent) -{ - dht_local_t *local = NULL; - xlator_t *subvol = NULL; - xlator_t *src_cached = NULL; - xlator_t *dst_hashed = NULL; - call_frame_t *prev = NULL; - loc_t *loc = NULL; - - GF_VALIDATE_OR_GOTO ("dht", frame, err); - GF_VALIDATE_OR_GOTO ("dht", this, err); - GF_VALIDATE_OR_GOTO ("dht", frame->local, err); - - local = frame->local; - prev = cookie; - subvol = prev->this; - src_cached = local->src_cached; - dst_hashed = local->dst_hashed; - loc = &local->loc; - - if (!src_cached || !dst_hashed) { - gf_log (this->name, GF_LOG_ERROR, "src_cached or dst_hashed" - "subvol is null"); - local->op_ret = -1; - local->op_errno = EINVAL; - goto out; - } - - if (op_ret == -1) { - gf_log (this->name, GF_LOG_ERROR, - "unlinking linkfile %s on %s failed (%s)", - loc->path, subvol->name, strerror (op_errno)); - local->op_ret = op_ret; - local->op_errno = op_errno; - goto out; - } - gf_log (this->name, GF_LOG_DEBUG, "unlink successfull. Proceeding with" - " creation of link file %s", loc->path); - dht_linkfile_create (frame, local->linkfile.linkfile_cbk, - src_cached, dst_hashed, loc); - - return 0; -out: - local->linkfile.linkfile_cbk (frame, NULL, frame->this, -1, EINVAL, - local->loc.inode, NULL, NULL, NULL); -err: - return -1; -} - -int -dht_linkfile_recreate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int op_ret, int op_errno, - inode_t *inode, struct iatt *stbuf, dict_t *xattr, - struct iatt *postparent) -{ - dht_local_t *local = NULL; - xlator_t *src_cached = NULL; - xlator_t *dst_hashed = NULL; - loc_t *loc = NULL; - - GF_VALIDATE_OR_GOTO ("dht", frame, err); - GF_VALIDATE_OR_GOTO ("dht", this, err); - GF_VALIDATE_OR_GOTO ("dht", frame->local, err); - - local = frame->local; - loc = &local->loc; - - src_cached = local->src_cached; - dst_hashed = local->dst_hashed; - - if (!src_cached || !dst_hashed) { - gf_log (this->name, GF_LOG_ERROR, "src_cached or dst_hashed" - " or hashed_subvol is null"); - local->op_ret = -1; - local->op_errno = EINVAL; - goto out; - } - - /* if link_file exists, remove it, else create it*/ - if (!op_ret) { - if (!check_is_linkfile (inode, stbuf, xattr)) - goto out; - gf_log (this->name, GF_LOG_DEBUG, "link file exists." - " Calling unlink on %s", loc->path); - STACK_WIND (frame, dht_recreate_linkfile_unlink_cbk, - dst_hashed, dst_hashed->fops->unlink, - loc); - - } else if (op_errno == ENOENT) { - gf_log (this->name, GF_LOG_DEBUG, "link file does not exist." - " Proceeding to creation of linkfile %s", loc->path); - dht_linkfile_create (frame, local->linkfile.linkfile_cbk, - src_cached, dst_hashed, loc); - } else { - gf_log (this->name, GF_LOG_ERROR, "returned error %s", - strerror(op_errno)); - local->op_ret = op_ret; - local->op_errno = op_errno; - goto out; - } - - return 0; -out: - local->linkfile.linkfile_cbk (frame, NULL, frame->this, -1, EINVAL, - loc->inode, NULL, NULL, NULL); -err: - return -1; -} - -int -dht_linkfile_recreate (call_frame_t *frame, fop_mknod_cbk_t linkfile_cbk, - xlator_t *tovol, xlator_t *fromvol, loc_t *loc) -{ - dht_local_t *local = NULL; - - GF_VALIDATE_OR_GOTO ("dht", frame, out); - GF_VALIDATE_OR_GOTO ("dht", loc, out); - GF_VALIDATE_OR_GOTO ("dht", tovol, out); - GF_VALIDATE_OR_GOTO ("dht", fromvol, out); - - local = frame->local; - local->linkfile.linkfile_cbk = linkfile_cbk; - local->linkfile.srcvol = tovol; - loc_copy (&local->linkfile.loc, loc); - - STACK_WIND (frame, dht_linkfile_recreate_cbk, - fromvol, fromvol->fops->lookup, loc, NULL); - - return 0; - -out: - linkfile_cbk (frame, NULL, frame->this, -1, EINVAL, loc->inode, NULL, - NULL, NULL); - - return -1; -} diff --git a/xlators/cluster/dht/src/dht-rename.c b/xlators/cluster/dht/src/dht-rename.c index 8110387d58b..8c8c144a606 100644 --- a/xlators/cluster/dht/src/dht-rename.c +++ b/xlators/cluster/dht/src/dht-rename.c @@ -426,6 +426,30 @@ nolinks: } +int +dht_rename_links_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent) +{ + call_frame_t *prev = NULL; + dht_local_t *local = NULL; + + prev = cookie; + local = frame->local; + + if (op_ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "link/file %s on %s failed (%s)", + local->loc.path, prev->this->name, strerror (op_errno)); + } + + DHT_STACK_DESTROY (frame); + + return 0; +} + + int dht_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *stbuf, @@ -439,6 +463,8 @@ dht_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, xlator_t *dst_hashed = NULL; xlator_t *dst_cached = NULL; xlator_t *rename_subvol = NULL; + call_frame_t *link_frame = NULL; + dht_local_t *link_local = NULL; local = frame->local; prev = cookie; @@ -457,6 +483,29 @@ dht_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, goto cleanup; } + if ((src_cached == dst_cached) && (dst_hashed != dst_cached)) { + link_frame = copy_frame (frame); + if (!link_frame) { + goto err; + } + + link_local = dht_local_init (link_frame); + if (!link_local) { + goto err; + } + + loc_copy (&link_local->loc, &local->loc2); + if (link_local->loc.inode) + inode_unref (link_local->loc.inode); + link_local->loc.inode = inode_ref (local->loc.inode); + uuid_copy (link_local->gfid, local->loc.inode->gfid); + link_frame->local = link_local; + + dht_linkfile_create (link_frame, dht_rename_links_create_cbk, + src_cached, dst_hashed, &link_local->loc); + } + +err: 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); @@ -625,7 +674,7 @@ dht_rename_unlink_links_cbk (call_frame_t *frame, void *cookie, xlator_t *this, local = frame->local; prev = cookie; - if (op_ret == -1) { + if ((op_ret == -1) && (op_errno != ENOENT)) { gf_log (this->name, GF_LOG_DEBUG, "unlink of %s on %s failed (%s)", local->loc2.path, prev->this->name, -- cgit