Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2d92a3c2 authored by Heinz Mauelshagen's avatar Heinz Mauelshagen Committed by Mike Snitzer
Browse files

dm raid: prohibit 'nosync' on new raid6 and reject resize during reshape 



Signed-off-by: default avatarHeinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 4dff2f1e

drivers/md/dm-raid.c

+15 −3
Original line number Diff line number Diff line
@@ -2752,9 +2752,21 @@ static int raid_ctr(struct dm_target *ti, unsigned argc, char **argv) 
	if (test_bit(MD_ARRAY_FIRST_USE, &rs->md.flags)) {

		set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags);

		rs_set_new(rs);

	} else if (rs_is_reshaping(rs))

		; /* skip rs setup */

	else if (rs_takeover_requested(rs)) {

		/* A new raid6 set has to be recovered to ensure proper parity and Q-Syndrome */

		if (rs_is_raid6(rs) &&

		    test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) {

			ti->error = "'nosync' not allowed for new raid6 set";

			return -EINVAL;

		}

		rs_setup_recovery(rs, 0);

	} else if (rs_is_reshaping(rs)) {

		/* Have to reject size change request during reshape */

		if (calculated_dev_sectors != rs->dev[0].rdev.sectors) {

			ti->error = "Can't resize a reshaping raid set";

			return -EPERM;

		}

		/* skip setup rs */

	} else if (rs_takeover_requested(rs)) {

		if (rs_is_reshaping(rs)) {

			ti->error = "Can't takeover a reshaping raid set";

			return -EPERM;