Commit 8c5c1473 authored Mar 14, 2018 by Steffen Maier Committed by Mike Snitzer Mar 14, 2018

dm mpath: fix passing integrity data



After v4.12 commit e2460f2a ("dm: mark targets that pass integrity
data"), dm-multipath, e.g. on DIF+DIX SCSI disk paths, does not support
block integrity any more. So add it to the whitelist.

This is also a pre-requisite to use block integrity with other dm layer(s)
on top of multipath, such as kpartx partitions (dm-linear) or LVM.

Also, bump target version to reflect this fix.

Fixes: e2460f2a ("dm: mark targets that pass integrity data")
Cc: <stable@vger.kernel.org> #4.12+
Bisected-by: Fedor Loshakov <loshakov@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent e8f74a0f

drivers/md/dm-mpath.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -2020,8 +2020,9 @@ static int multipath_busy(struct dm_target *ti)
		---------------------------------------------------------------/
		static struct target_type multipath_target = {
		.name = "multipath",
		.version = {1, 12, 0},
		.features = DM_TARGET_SINGLETON \| DM_TARGET_IMMUTABLE,
		.version = {1, 13, 0},
		.features = DM_TARGET_SINGLETON \| DM_TARGET_IMMUTABLE \|
		DM_TARGET_PASSES_INTEGRITY,
		.module = THIS_MODULE,
		.ctr = multipath_ctr,
		.dtr = multipath_dtr,

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