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authorXavier Hernandez <xhernandez@datalab.es>2015-01-13 10:50:06 +0100
committerVijay Bellur <vbellur@redhat.com>2015-01-18 22:04:40 -0800
commit4f734b04694feabe047d758c2a0a6cd8ce5fc450 (patch)
tree65c3536c8db7fbedff5648acff46a83784a2ff2a /xlators/cluster
parent63dc6e1942dffcddd99c5048a498ca00eead8baa (diff)
ec: Don't use inodelk on getxattr when clearing locks
When command 'clear-locks' from cli is executed, a getxattr request is received by ec. This request was handled as usual, first locking the inode. Once this request was processed by the bricks, all locks were removed, including the lock used by ec. When ec tried to unlock the previously acquired lock (which was already released), caused a crash in glusterfsd. This fix executes the getxattr request without any lock acquired for the clear-locks command. Change-Id: I77e550d13c4673d2468a1e13fe6e2fed20e233c6 BUG: 1179050 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/9440 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
Diffstat (limited to 'xlators/cluster')
-rw-r--r--xlators/cluster/ec/src/ec-combine.c2
-rw-r--r--xlators/cluster/ec/src/ec-inode-read.c19
2 files changed, 12 insertions, 9 deletions
diff --git a/xlators/cluster/ec/src/ec-combine.c b/xlators/cluster/ec/src/ec-combine.c
index e605f7ba567..0f883d03fac 100644
--- a/xlators/cluster/ec/src/ec-combine.c
+++ b/xlators/cluster/ec/src/ec-combine.c
@@ -131,8 +131,8 @@ int32_t ec_dict_data_compare(dict_t * dict, char * key, data_t * value,
(strcmp(key, GF_XATTR_PATHINFO_KEY) == 0) ||
(strcmp(key, GF_XATTR_USER_PATHINFO_KEY) == 0) ||
(strcmp(key, GF_XATTR_LOCKINFO_KEY) == 0) ||
- (strcmp(key, GF_XATTR_CLRLK_CMD) == 0) ||
(strcmp(key, GLUSTERFS_OPEN_FD_COUNT) == 0) ||
+ (strncmp(key, GF_XATTR_CLRLK_CMD, strlen(GF_XATTR_CLRLK_CMD)) == 0) ||
(strncmp(key, EC_QUOTA_PREFIX, strlen(EC_QUOTA_PREFIX)) == 0) ||
(fnmatch(GF_XATTR_STIME_PATTERN, key, 0) == 0) ||
(fnmatch(MARKER_XATTR_PREFIX ".*." XTIME, key, 0) == 0) ||
diff --git a/xlators/cluster/ec/src/ec-inode-read.c b/xlators/cluster/ec/src/ec-inode-read.c
index a962264fde9..9d860161ecf 100644
--- a/xlators/cluster/ec/src/ec-inode-read.c
+++ b/xlators/cluster/ec/src/ec-inode-read.c
@@ -242,15 +242,18 @@ int32_t ec_manager_getxattr(ec_fop_data_t * fop, int32_t state)
{
case EC_STATE_INIT:
case EC_STATE_LOCK:
- if (fop->fd == NULL)
- {
- ec_lock_prepare_inode(fop, &fop->loc[0], 0);
- }
- else
- {
- ec_lock_prepare_fd(fop, fop->fd, 0);
+ /* clear-locks commands must be done without any locks acquired
+ to avoid interferences. */
+ if ((fop->str[0] == NULL) ||
+ (strncmp(fop->str[0], GF_XATTR_CLRLK_CMD,
+ strlen(GF_XATTR_CLRLK_CMD)) != 0)) {
+ if (fop->fd == NULL) {
+ ec_lock_prepare_inode(fop, &fop->loc[0], 0);
+ } else {
+ ec_lock_prepare_fd(fop, fop->fd, 0);
+ }
+ ec_lock(fop);
}
- ec_lock(fop);
return EC_STATE_DISPATCH;