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author | Guoqing Jiang <gqjiang@suse.com> | 2016-05-04 06:17:09 (GMT) |
---|---|---|
committer | Shaohua Li <shli@fb.com> | 2016-05-09 16:24:03 (GMT) |
commit | 51e453aecb267b6a99b1d2853bccd5bba7340236 (patch) | |
tree | c1a405b2f33b0798da25fa3e410d760c1364dc22 /drivers/md/md-cluster.h | |
parent | 85ad1d13ee9b3db00615ea24b031c15e5ba14fd1 (diff) | |
download | linux-51e453aecb267b6a99b1d2853bccd5bba7340236.tar.xz |
md-cluster: gather resync infos and enable recv_thread after bitmap is ready
The in-memory bitmap is not ready when node joins cluster,
so it doesn't make sense to make gather_all_resync_info()
called so earlier, we need to call it after the node's
bitmap is setup. Also, recv_thread could be wake up after
node joins cluster, but it could cause problem if node
receives RESYNCING message without persionality since
mddev->pers->quiesce is called in process_suspend_info.
This commit introduces a new cluster interface load_bitmaps
to fix above problems, load_bitmaps is called in bitmap_load
where bitmap and persionality are ready, and load_bitmaps
does the following tasks:
1. call gather_all_resync_info to load all the node's
bitmap info.
2. set MD_CLUSTER_ALREADY_IN_CLUSTER bit to recv_thread
could be wake up, and wake up recv_thread if there is
pending recv event.
Then ack_bast only wakes up recv_thread after IN_CLUSTER
bit is ready otherwise MD_CLUSTER_PENDING_RESYNC_EVENT is
set.
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/md-cluster.h')
-rw-r--r-- | drivers/md/md-cluster.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/md-cluster.h b/drivers/md/md-cluster.h index 45ce6c9..e765499 100644 --- a/drivers/md/md-cluster.h +++ b/drivers/md/md-cluster.h @@ -23,6 +23,7 @@ struct md_cluster_operations { void (*add_new_disk_cancel)(struct mddev *mddev); int (*new_disk_ack)(struct mddev *mddev, bool ack); int (*remove_disk)(struct mddev *mddev, struct md_rdev *rdev); + void (*load_bitmaps)(struct mddev *mddev, int total_slots); int (*gather_bitmaps)(struct md_rdev *rdev); int (*lock_all_bitmaps)(struct mddev *mddev); void (*unlock_all_bitmaps)(struct mddev *mddev); |