From: Steffen Maier <maier@linux.vnet.ibm.com>
Date: Wed, 14 Mar 2018 15:33:06 +0100
Subject: [PATCH] dm mpath: fix passing integrity data
Patch-mainline: v4.16-rc6
Git-commit: 8c5c147339d2e201108169327b1f99aa6d57d2cd
References: bsc#1085599
After v4.12 commit e2460f2a4bc7 ("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: e2460f2a4bc7 ("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>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/md/dm-mpath.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 2481c4794ed6..a05a560d3cba 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -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,
--
2.12.3