From d4098c7262a47f529765d89614484a957363d623 Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Tue, 24 Oct 2017 15:11:50 +0800 Subject: md-cluster/raid10: set "do_balance = 0" if area is resyncing Just like clustered raid1, it is impossible for cluster raid10 to choose the best device for read balance when the area of array is resyncing. Because we cannot trust the data to be the same on all devices at that time, so we choose just the first one to use, so set do_balance to 0. Signed-off-by: Guoqing Jiang Signed-off-by: Shaohua Li --- drivers/md/raid10.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/md') diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 615f677ceb1a..61890231972e 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -759,8 +759,11 @@ static struct md_rdev *read_balance(struct r10conf *conf, * the resync window. We take the first readable disk when * above the resync window. */ - if (conf->mddev->recovery_cp < MaxSector - && (this_sector + sectors >= conf->next_resync)) + if ((conf->mddev->recovery_cp < MaxSector + && (this_sector + sectors >= conf->next_resync)) || + (mddev_is_clustered(conf->mddev) && + md_cluster_ops->area_resyncing(conf->mddev, READ, this_sector, + this_sector + sectors))) do_balance = 0; for (slot = 0; slot < conf->copies ; slot++) { -- cgit