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imsm: FIX: Chunk size migration is not possible 

Chunk size only migration for raid0 and raid5 is not possible.
(mdadm UT 15* fails). Mdadm exits with information:
   mdadm: imsm unknown layout 0xffffffff for this raid level 0

Problem was introduced in patch (2011-11-16):
   imsm: platform capabilities are not validated during level migration

During chunk size migration layout variable is not set correctly.
Set it correctly for this migration type.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Adam Kwolek 2011-12-15 14:35:00 +11:00 committed by NeilBrown
parent 4c965cc989
commit 67a2db324f
1 changed files with 12 additions and 7 deletions
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19
super-intel.c
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@ -9050,8 +9050,10 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st,
int change = -1;
int check_devs = 0;
int chunk;
int devNumChange=0;
int layout = -1;
/* number of added/removed disks in operation result */
int devNumChange = 0;
/* imsm compatible layout value for array geometry verification */
int imsm_layout = -1;
getinfo_super_imsm_volume(st, &info, NULL);
if ((geo->level != info.array.level) &&
@ -9069,14 +9071,14 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st,
change = -1;
goto analyse_change_exit;
}
layout = geo->layout;
imsm_layout = geo->layout;
check_devs = 1;
devNumChange = 1; /* parity disk added */
} else if (geo->level == 10) {
change = CH_TAKEOVER;
check_devs = 1;
devNumChange = 2; /* two mirrors added */
layout = 0x102; /* imsm supported layout */
imsm_layout = 0x102; /* imsm supported layout */
}
break;
case 1:
@ -9085,7 +9087,7 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st,
change = CH_TAKEOVER;
check_devs = 1;
devNumChange = -(geo->raid_disks/2);
layout = 0; /* imsm raid0 layout */
imsm_layout = 0; /* imsm raid0 layout */
}
break;
}
@ -9120,8 +9122,11 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st,
change = -1;
goto analyse_change_exit;
}
} else
} else {
geo->layout = info.array.layout;
if (imsm_layout == -1)
imsm_layout = info.array.layout;
}
if ((geo->chunksize > 0) && (geo->chunksize != UnSet)
&& (geo->chunksize != info.array.chunk_size))
@ -9132,7 +9137,7 @@ enum imsm_reshape_type imsm_analyze_change(struct supertype *st,
chunk = geo->chunksize / 1024;
if (!validate_geometry_imsm(st,
geo->level,
layout,
imsm_layout,
geo->raid_disks + devNumChange,
&chunk,
geo->size,