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authorGuoqing Jiang <gqjiang@suse.com>2018-10-18 16:37:46 +0800
committerShaohua Li <shli@fb.com>2018-10-18 09:40:01 -0700
commitcbce6863b6d04f6eac6b144bcfaaf11a189d6533 (patch)
treeb2e04e66efd2ff10406e86b975a944fffda18bae /drivers/md
parentca1e98e04a8d6cefbe8ad138df806434de6de7f3 (diff)
md-cluster/bitmap: don't call md_bitmap_sync_with_cluster during reshaping stage
When reshape is happening in one node, other nodes could receive lots of RESYNCING messages, so md_bitmap_sync_with_cluster is called. Since the resyncing window is typically small in these RESYNCING messages, so WARN is always triggered, so we should not call the func when reshape is happening. 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')
-rw-r--r--drivers/md/md-cluster.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index ca4a35f8bad8..792e0218a42f 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -457,12 +457,13 @@ static void remove_suspend_info(struct mddev *mddev, int slot)
mddev->pers->quiesce(mddev, 0);
}
-
static void process_suspend_info(struct mddev *mddev,
int slot, sector_t lo, sector_t hi)
{
struct md_cluster_info *cinfo = mddev->cluster_info;
struct suspend_info *s;
+ struct mdp_superblock_1 *sb = NULL;
+ struct md_rdev *rdev;
if (!hi) {
/*
@@ -476,6 +477,12 @@ static void process_suspend_info(struct mddev *mddev,
return;
}
+ rdev_for_each(rdev, mddev)
+ if (rdev->raid_disk > -1 && !test_bit(Faulty, &rdev->flags)) {
+ sb = page_address(rdev->sb_page);
+ break;
+ }
+
/*
* The bitmaps are not same for different nodes
* if RESYNCING is happening in one node, then
@@ -488,12 +495,18 @@ static void process_suspend_info(struct mddev *mddev,
* sync_low/hi is used to record the region which
* arrived in the previous RESYNCING message,
*
- * Call bitmap_sync_with_cluster to clear
- * NEEDED_MASK and set RESYNC_MASK since
- * resync thread is running in another node,
- * so we don't need to do the resync again
- * with the same section */
- md_bitmap_sync_with_cluster(mddev, cinfo->sync_low, cinfo->sync_hi, lo, hi);
+ * Call md_bitmap_sync_with_cluster to clear NEEDED_MASK
+ * and set RESYNC_MASK since resync thread is running
+ * in another node, so we don't need to do the resync
+ * again with the same section.
+ *
+ * Skip md_bitmap_sync_with_cluster in case reshape
+ * happening, because reshaping region is small and
+ * we don't want to trigger lots of WARN.
+ */
+ if (sb && !(le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE))
+ md_bitmap_sync_with_cluster(mddev, cinfo->sync_low,
+ cinfo->sync_hi, lo, hi);
cinfo->sync_low = lo;
cinfo->sync_hi = hi;