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authorXue jiufei <xuejiufei@huawei.com>2013-09-11 14:19:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:56:31 -0700
commit98ac9125c5afed8c5d2e4c5824988f8ad51814e1 (patch)
tree123fa8641217bf5891caa2179146ec0a54de0dbd /fs/ocfs2
parentf17c20dd2ec81e8ff328b81bc847da9429d0975b (diff)
ocfs2: dlm_request_all_locks() should deal with the status sent from target node
dlm_request_all_locks() should deal with the status sent from target node if DLM_LOCK_REQUEST_MSG is sent successfully, or recovery master will fall into endless loop, waiting for other nodes to send locks and DLM_RECO_DATA_DONE_MSG to me. NodeA NodeB selected as recovery master dlm_remaster_locks() ->dlm_request_all_locks() send DLM_LOCK_REQUEST_MSG to nodeA It happened that NodeA cannot alloc memory when it processes this message. dlm_request_all_locks_handler() do not queue dlm_request_all_locks_worker and returns -ENOMEM. It will never send locks and DLM_RECO_DATA_DONE_MSG to NodeB. NodeB do not deal with the status sent from nodeA, and will fall in endless loop waiting for the recovery state of NodeA to be changed. Signed-off-by: joyce <xuejiufei@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Jeff Liu <jeff.liu@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/dlm/dlmrecovery.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 773bd32bfd8c..f94550218152 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -787,6 +787,7 @@ static int dlm_request_all_locks(struct dlm_ctxt *dlm, u8 request_from,
{
struct dlm_lock_request lr;
int ret;
+ int status;
mlog(0, "\n");
@@ -800,13 +801,15 @@ static int dlm_request_all_locks(struct dlm_ctxt *dlm, u8 request_from,
// send message
ret = o2net_send_message(DLM_LOCK_REQUEST_MSG, dlm->key,
- &lr, sizeof(lr), request_from, NULL);
+ &lr, sizeof(lr), request_from, &status);
/* negative status is handled by caller */
if (ret < 0)
mlog(ML_ERROR, "%s: Error %d send LOCK_REQUEST to node %u "
"to recover dead node %u\n", dlm->name, ret,
request_from, dead_node);
+ else
+ ret = status;
// return from here, then
// sleep until all received or error
return ret;