diff options
| author | Guoqing Jiang <gqjiang@suse.com> | 2015-12-20 23:51:00 (GMT) |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2016-01-06 00:38:57 (GMT) |
| commit | f6a2dc64ee74477c966f5220b1f560ed6308d010 (patch) | |
| tree | b371e1cbeb71c2e04e45be01c4964faace6ec400 /drivers/md/md.c | |
| parent | 09afd2a8d6ad2c40f3c1ae0b3f83784864cf4c15 (diff) | |
| download | linux-f6a2dc64ee74477c966f5220b1f560ed6308d010.tar.xz | |
md-cluster: append some actions when change bitmap from clustered to none
For clustered raid, we need to do extra actions when change
bitmap to none.
1. check if all the bitmap lock could be get or not, if yes then
we can continue the change since cluster raid is only active
in current node. Otherwise return fail and unlock the related
bitmap locks
2. set nodes to 0 and then leave cluster environment.
3. release other nodes's bitmap lock.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index f2f855c..495d8aa 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -6599,6 +6599,19 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) rv = -EINVAL; goto err; } + if (mddev->bitmap_info.nodes) { + /* hold PW on all the bitmap lock */ + if (md_cluster_ops->lock_all_bitmaps(mddev) <= 0) { + printk("md: can't change bitmap to none since the" + " array is in use by more than one node\n"); + rv = -EPERM; + md_cluster_ops->unlock_all_bitmaps(mddev); + goto err; + } + + mddev->bitmap_info.nodes = 0; + md_cluster_ops->leave(mddev); + } mddev->pers->quiesce(mddev, 1); bitmap_destroy(mddev); mddev->pers->quiesce(mddev, 0); |