From: Goldwyn Rodrigues Subject: [PATCH 23/24] Read from the first device when an area is resyncing Date: Thu, 18 Dec 2014 10:19:04 -0600 Message-ID: <20141218161904.GA29671@shrek.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de Cc: lzhong@suse.com, linux-raid@vger.kernel.org List-Id: linux-raid.ids set choose_first true for cluster read in read balance when the area is resyncing. Signed-off-by: Lidong Zhong Signed-off-by: Goldwyn Rodrigues --- drivers/md/raid1.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index eb8fd2e..4dcbaae 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -540,7 +540,13 @@ static int read_balance(struct r1conf *conf, struct r1bio *r1_bio, int *max_sect has_nonrot_disk = 0; choose_next_idle = 0; - choose_first = (conf->mddev->recovery_cp < this_sector + sectors); + if ((conf->mddev->recovery_cp < this_sector + sectors) || + (mddev_is_clustered(conf->mddev) && + md_cluster_ops->area_resyncing(conf->mddev, this_sector, + this_sector + sectors))) + choose_first = 1; + else + choose_first = 0; for (disk = 0 ; disk < conf->raid_disks * 2 ; disk++) { sector_t dist; -- 2.1.2