Commit 8c9e376b authored by Yu Kuai's avatar Yu Kuai
Browse files

md: warn about updating super block failure 

Many personalities will handle IO error from daemon thread(like raid1d,
raid10d, raid5d), and sb will require to be clean before hanlding these
failed IO. However update sb can fail, for example array is broken by
IO failure, or user config sysfs api array_state.

This patch adds warning if updating sb failed first, in case this will
be related to IO hang.

Link: https://lore.kernel.org/linux-raid/20251117085557.770572-2-yukuai@fnnas.com


Signed-off-by: default avatarYu Kuai <yukuai@fnnas.com>
Reviewed-by: default avatarLi Nan <linan122@huawei.com>
parent 46f21952

drivers/md/md.c

+1 −0
Original line number Diff line number Diff line
@@ -2788,6 +2788,7 @@ void md_update_sb(struct mddev *mddev, int force_change) 
	if (!md_is_rdwr(mddev)) {

		if (force_change)

			set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);

		pr_err("%s: can't update sb for read-only array %s\n", __func__, mdname(mddev));

		return;

	}