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imsm: enforce num_disks constraints 

RAID1 == 2 disks
RAID5 >= 3 disks
RAID10 == 4 disks

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2009-01-20 01:36:50 -07:00
parent 35f81cbbc5
commit 1c556e92ba
1 changed files with 5 additions and 5 deletions
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10
super-intel.c
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@ -2771,10 +2771,9 @@ static int is_raid_level_supported(const struct imsm_orom *orom, int level, int
case 1:
if (raiddisks > 2)
return imsm_orom_has_raid1e(orom);
else
return imsm_orom_has_raid1(orom);
case 10: return imsm_orom_has_raid10(orom);
case 5: return imsm_orom_has_raid5(orom);
return imsm_orom_has_raid1(orom) && raiddisks == 2;
case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4;
case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2;
}
else
return 1; /* not on an Intel RAID platform so anything goes */
@ -2805,7 +2804,8 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level,
return 0;
if (!is_raid_level_supported(super->orom, level, raiddisks)) {
pr_vrb(": platform does not support raid level: %d\n", level);
pr_vrb(": platform does not support raid%d with %d disk%s\n",
level, raiddisks, raiddisks > 1 ? "s" : "");
return 0;
}
if (super->orom && !imsm_orom_has_chunk(super->orom, chunk)) {