diff options
author | Pranith Kumar K <pkarampu@redhat.com> | 2014-05-13 14:49:47 +0530 |
---|---|---|
committer | Niels de Vos <ndevos@redhat.com> | 2014-05-14 01:25:44 -0700 |
commit | 4b2da260afb962c3411e75cb450e081e675e51ff (patch) | |
tree | d753be05852fa29714844346d3fabcfb2429ae58 /xlators/cluster | |
parent | 0c87b67ba9659a2d029d8136835331301b7b6ceb (diff) |
cluster/afr: Remove eager-lock stub on finodelk failure
Problem:
For write fops afr's transaction eager-lock init adds transactions
that can share eager-lock to fdctx list. But if eager-lock finodelk
fop fails the stub remains in the list. This could later lead to
corruption of the list and lead to infinite loop on the list
leading to a mount hang.
Fix:
Remove the stub when finodelk fails.
Change-Id: Ic9d1368907c32edb4ea2e6db623e869e4f50180d
BUG: 1063190
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/7748
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Tested-by: Niels de Vos <ndevos@redhat.com>
Diffstat (limited to 'xlators/cluster')
-rw-r--r-- | xlators/cluster/afr/src/afr-common.c | 19 | ||||
-rw-r--r-- | xlators/cluster/afr/src/afr-transaction.c | 8 | ||||
-rw-r--r-- | xlators/cluster/afr/src/afr.h | 2 |
3 files changed, 23 insertions, 6 deletions
diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c index a31cc2cb015..c4e57625220 100644 --- a/xlators/cluster/afr/src/afr-common.c +++ b/xlators/cluster/afr/src/afr-common.c @@ -870,6 +870,15 @@ afr_local_transaction_cleanup (afr_local_t *local, xlator_t *this) GF_FREE (local->transaction.postop_piggybacked); } +void +afr_remove_eager_lock_stub (afr_local_t *local) +{ + LOCK (&local->fd->lock); + { + list_del_init (&local->transaction.eager_locked); + } + UNLOCK (&local->fd->lock); +} void afr_local_cleanup (afr_local_t *local, xlator_t *this) @@ -879,6 +888,10 @@ afr_local_cleanup (afr_local_t *local, xlator_t *this) if (!local) return; + if (local->transaction.eager_lock_on && + !list_empty (&local->transaction.eager_locked)) + afr_remove_eager_lock_stub (local); + afr_local_sh_cleanup (local, this); afr_local_transaction_cleanup (local, this); @@ -2944,6 +2957,12 @@ afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd) fd_ctx = (afr_fd_ctx_t *)(long) ctx; if (fd_ctx) { + //no need to take any locks + if (!list_empty (&fd_ctx->eager_locked)) + gf_log (this->name, GF_LOG_WARNING, "%s: Stale " + "Eager-lock stubs found", + uuid_utoa (fd->inode->gfid)); + GF_FREE (fd_ctx->pre_op_done); GF_FREE (fd_ctx->opened_on); diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c index 91af75b503b..01839f5e8d8 100644 --- a/xlators/cluster/afr/src/afr-transaction.c +++ b/xlators/cluster/afr/src/afr-transaction.c @@ -1914,7 +1914,7 @@ afr_delayed_changelog_wake_up (xlator_t *this, fd_t *fd) } - int +int afr_transaction_resume (call_frame_t *frame, xlator_t *this) { afr_internal_lock_t *int_lock = NULL; @@ -1929,11 +1929,7 @@ afr_transaction_resume (call_frame_t *frame, xlator_t *this) /* We don't need to retain "local" in the fd list anymore, writes to all subvols are finished by now */ - LOCK (&local->fd->lock); - { - list_del_init (&local->transaction.eager_locked); - } - UNLOCK (&local->fd->lock); + afr_remove_eager_lock_stub (local); } afr_restore_lk_owner (frame); diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h index 59d08a1d0b7..9abb48694a2 100644 --- a/xlators/cluster/afr/src/afr.h +++ b/xlators/cluster/afr/src/afr.h @@ -1218,4 +1218,6 @@ afr_can_start_data_self_heal (afr_local_t *local, afr_private_t *priv); gf_boolean_t afr_can_start_metadata_self_heal (afr_local_t *local, afr_private_t *priv); +void +afr_remove_eager_lock_stub (afr_local_t *local); #endif /* __AFR_H__ */ |