md-cluster: Perform resync/recovery under a DLM lock

Resync or recovery must be performed by only one node at a time.
A DLM lock resource, resync_lockres provides the mutual exclusion
so that only one node performs the recovery/resync at a time.

If a node is unable to get the resync_lockres, because recovery is
being performed by another node, it set MD_RECOVER_NEEDED so as
to schedule recovery in the future.

Remove the debug message in resync_info_update()
used during development.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index b54fefc85b66..a2d813c9eabd 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2503,8 +2503,6 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp
                 if (mddev_is_clustered(mddev)) {
                         conf->cluster_sync_low = 0;
                         conf->cluster_sync_high = 0;
-                        /* Send zeros to mark end of resync */
-                        md_cluster_ops->resync_info_update(mddev, 0, 0);
                 }
                 return 0;
         }