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| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2014-06-07 09:39:37 +0200 |
|---|---|---|
| committer | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-02-23 16:59:07 +0100 |
| commit | 589a1c491621ab81a1955d17d634636522c1b4c1 (patch) | |
| tree | b476b0701562e54da42f4664f4ee81e8bb39f563 /drivers/md/md-cluster.c | |
| parent | Resync start/Finish actions (diff) | |
| download | linux-589a1c491621ab81a1955d17d634636522c1b4c1.tar.xz linux-589a1c491621ab81a1955d17d634636522c1b4c1.zip | |
Suspend writes in RAID1 if within range
If there is a resync going on, all nodes must suspend writes to the
range. This is recorded in the suspend_info/suspend_list.
If there is an I/O within the ranges of any of the suspend_info,
should_suspend will return 1.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Diffstat (limited to 'drivers/md/md-cluster.c')
| -rw-r--r-- | drivers/md/md-cluster.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 6b0dffebc90f..d85a6ca4443e 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -723,6 +723,25 @@ static void resync_finish(struct mddev *mddev) resync_send(mddev, RESYNCING, 0, 0); } +static int area_resyncing(struct mddev *mddev, sector_t lo, sector_t hi) +{ + struct md_cluster_info *cinfo = mddev->cluster_info; + int ret = 0; + struct suspend_info *s; + + spin_lock_irq(&cinfo->suspend_lock); + if (list_empty(&cinfo->suspend_list)) + goto out; + list_for_each_entry(s, &cinfo->suspend_list, list) + if (hi > s->lo && lo < s->hi) { + ret = 1; + break; + } +out: + spin_unlock_irq(&cinfo->suspend_lock); + return ret; +} + static struct md_cluster_operations cluster_ops = { .join = join, .leave = leave, @@ -733,6 +752,7 @@ static struct md_cluster_operations cluster_ops = { .metadata_update_start = metadata_update_start, .metadata_update_finish = metadata_update_finish, .metadata_update_cancel = metadata_update_cancel, + .area_resyncing = area_resyncing, }; static int __init cluster_init(void) |