File 0190-imsm-Set-disk-slot-number.patch of Package mdadm.7989

From 20dc76d15b40c17b4ccdc3d6283af8ecb513707f Mon Sep 17 00:00:00 2001
From: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Date: Tue, 3 Oct 2017 14:49:49 +0200
Subject: [PATCH] imsm: Set disk slot number
Git-commit: 20dc76d15b40c17b4ccdc3d6283af8ecb513707f
Patch-mainline: mdadm-4.0+
References: bsc#1069165, bsc#1069167, bsc#1068030

If first disk of IMSM RAID1 is failed but still present in the system,
the array is not auto-assembled. Auto-assemble uses raid disk slot from
metadata to index disks. As it's not set, the valid disk is seen as a
replacement disk and its metadata is ignored. The problem is not
observed for other RAID levels as they have more than 2 disks -
replacement disks are only stored under uneven indexes so third disk
metadata is used in such scenario.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Reviewed-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Signed-off-by: Coly Li <colyli@suse.de>

---
 super-intel.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/super-intel.c b/super-intel.c
index 536cb61..b561fe2 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -3502,6 +3502,9 @@ static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *
 			__u32 ord = get_imsm_ord_tbl_ent(dev, j, MAP_0);
 			__u32 idx = ord_to_idx(ord);
 
+			if (super->disks && super->disks->index == (int)idx)
+				info->disk.raid_disk = j;
+
 			if (!(ord & IMSM_ORD_REBUILD) &&
 			    get_imsm_missing(super, idx)) {
 				missing = 1;
-- 
2.13.6
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