This is a note to let you know that I've just added the patch titled
dm mpath: fix passing integrity data
to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dm-mpath-fix-passing-integrity-data.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8c5c147339d2e201108169327b1f99aa6d57d2cd Mon Sep 17 00:00:00 2001
From: Steffen Maier <maier@xxxxxxxxxxxxxxxxxx>
Date: Wed, 14 Mar 2018 15:33:06 +0100
Subject: dm mpath: fix passing integrity data
From: Steffen Maier <maier@xxxxxxxxxxxxxxxxxx>
commit 8c5c147339d2e201108169327b1f99aa6d57d2cd upstream.
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@xxxxxxxxxxxxxxx> #4.12+
Bisected-by: Fedor Loshakov <loshakov@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Steffen Maier <maier@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-mpath.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1968,8 +1968,9 @@ static int multipath_busy(struct dm_targ
*---------------------------------------------------------------*/
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,
Patches currently in stable-queue which might be from maier@xxxxxxxxxxxxxxxxxx are
queue-4.15/dm-mpath-fix-passing-integrity-data.patch