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authorGoldwyn Rodrigues <rgoldwyn@suse.com>2015-08-19 01:14:42 +0300
committerGoldwyn Rodrigues <rgoldwyn@suse.com>2015-10-12 09:32:05 +0300
commitc40f341f1e7fd4eddcfc5881d94cfa8669071ee6 (patch)
treed8d572cb6b88dcd1102596d31b2bd153f79fdaab /drivers/md/md-cluster.h
parent3c462c880b52aae2cfbbb8db8b401eef118cc128 (diff)
downloadlinux-c40f341f1e7fd4eddcfc5881d94cfa8669071ee6.tar.xz
md-cluster: Use a small window for resync
Suspending the entire device for resync could take too long. Resync in small chunks. cluster's resync window (32M) is maintained in r1conf as cluster_sync_low and cluster_sync_high and processed in raid1's sync_request(). If the current resync is outside the cluster resync window: 1. Set the cluster_sync_low to curr_resync_completed. 2. Check if the sync will fit in the new window, if not issue a wait_barrier() and set cluster_sync_low to sector_nr. 3. Set cluster_sync_high to cluster_sync_low + resync_window. 4. Send a message to all nodes so they may add it in their suspension list. bitmap_cond_end_sync is modified to allow to force a sync inorder to get the curr_resync_completed uptodate with the sector passed. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/md-cluster.h')
-rw-r--r--drivers/md/md-cluster.h4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/md/md-cluster.h b/drivers/md/md-cluster.h
index 00defe2badbc..f5bdc0c86eaa 100644
--- a/drivers/md/md-cluster.h
+++ b/drivers/md/md-cluster.h
@@ -12,9 +12,7 @@ struct md_cluster_operations {
int (*join)(struct mddev *mddev, int nodes);
int (*leave)(struct mddev *mddev);
int (*slot_number)(struct mddev *mddev);
- void (*resync_info_update)(struct mddev *mddev, sector_t lo, sector_t hi);
- int (*resync_start)(struct mddev *mddev, sector_t lo, sector_t hi);
- void (*resync_finish)(struct mddev *mddev);
+ int (*resync_info_update)(struct mddev *mddev, sector_t lo, sector_t hi);
int (*metadata_update_start)(struct mddev *mddev);
int (*metadata_update_finish)(struct mddev *mddev);
int (*metadata_update_cancel)(struct mddev *mddev);