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commit 20dc76d15b40c17b4ccdc3d6283af8ecb513707f
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Author: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
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Date: Tue Oct 3 14:49:49 2017 +0200
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imsm: Set disk slot number
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If first disk of IMSM RAID1 is failed but still present in the system,
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the array is not auto-assembled. Auto-assemble uses raid disk slot from
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metadata to index disks. As it's not set, the valid disk is seen as a
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replacement disk and its metadata is ignored. The problem is not
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observed for other RAID levels as they have more than 2 disks -
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replacement disks are only stored under uneven indexes so third disk
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metadata is used in such scenario.
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Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
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Reviewed-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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diff --git a/super-intel.c b/super-intel.c
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index 536cb61..b561fe2 100644
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--- a/super-intel.c
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+++ b/super-intel.c
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@@ -3502,6 +3502,9 @@ static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *
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__u32 ord = get_imsm_ord_tbl_ent(dev, j, MAP_0);
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__u32 idx = ord_to_idx(ord);
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+ if (super->disks && super->disks->index == (int)idx)
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+ info->disk.raid_disk = j;
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+
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if (!(ord & IMSM_ORD_REBUILD) &&
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get_imsm_missing(super, idx)) {
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missing = 1;
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