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authorAnand Avati <avati@gluster.com>2010-10-28 00:52:30 +0000
committerAnand V. Avati <avati@dev.gluster.com>2010-10-27 23:37:36 -0700
commit00b0a53bae2a5e39f197359581a3850a32970e54 (patch)
tree4cb60e938cec6bcbbf9ad278fad32be41ec349fd /xlators/cluster/afr/src/afr-lk-common.c
parent87c0e8fba2d0be4496ec4085136fca459f62c00c (diff)
replicate: fix hang/missing frame during locking
nonblocking style locking would result in a missing frame when all subvolumes are down or when no subvolume on which fd was opened is up. Check for this condition and unlock gracefully Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 918 (AFR write fails when subvolumes' state is swapped) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=918
Diffstat (limited to 'xlators/cluster/afr/src/afr-lk-common.c')
-rw-r--r--xlators/cluster/afr/src/afr-lk-common.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c
index e7eb6a12e..c8b0b6600 100644
--- a/xlators/cluster/afr/src/afr-lk-common.c
+++ b/xlators/cluster/afr/src/afr-lk-common.c
@@ -1236,6 +1236,13 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
call_count = internal_lock_count (frame, this, fd_ctx);
int_lock->lk_call_count = call_count;
+ if (!call_count) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "fd not open on any subvolumes. aborting.");
+ afr_unlock (frame, this);
+ goto out;
+ }
+
/* Send non-blocking entrylk calls only on up children
and where the fd has been opened */
for (i = 0; i < priv->child_count; i++) {
@@ -1276,7 +1283,7 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
}
}
}
-
+out:
return 0;
}
@@ -1394,6 +1401,13 @@ afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this)
call_count = internal_lock_count (frame, this, fd_ctx);
int_lock->lk_call_count = call_count;
+ if (!call_count) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "fd not open on any subvolumes. aborting.");
+ afr_unlock (frame, this);
+ goto out;
+ }
+
/* Send non-blocking inodelk calls only on up children
and where the fd has been opened */
for (i = 0; i < priv->child_count; i++) {