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imsm: compatibility fixes for creating imsm arrays 

When creating an imsm array use the lowest possible feature set to
maximize compatibility.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2008-11-08 16:03:07 -07:00
parent f2f27e63c4
commit 4d1313e901
1 changed files with 64 additions and 5 deletions
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69
super-intel.c
View File

@ -1706,6 +1706,53 @@ static __u32 info_to_blocks_per_member(mdu_array_info_t *info)
return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1);
}
static void imsm_update_version_info(struct intel_super *super)
{
/* update the version and attributes */
struct imsm_super *mpb = super->anchor;
char *version;
struct imsm_dev *dev;
struct imsm_map *map;
int i;
for (i = 0; i < mpb->num_raid_devs; i++) {
dev = get_imsm_dev(super, i);
map = get_imsm_map(dev, 0);
if (__le32_to_cpu(dev->size_high) > 0)
mpb->attributes |= MPB_ATTRIB_2TB;
/* FIXME detect when an array spans a port multiplier */
#if 0
mpb->attributes |= MPB_ATTRIB_PM;
#endif
if (mpb->num_raid_devs > 1 ||
mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) {
version = MPB_VERSION_ATTRIBS;
switch (get_imsm_raid_level(map)) {
case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break;
case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break;
case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break;
case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break;
}
} else {
if (map->num_members >= 5)
version = MPB_VERSION_5OR6_DISK_ARRAY;
else if (dev->status == DEV_CLONE_N_GO)
version = MPB_VERSION_CNG;
else if (get_imsm_raid_level(map) == 5)
version = MPB_VERSION_RAID5;
else if (map->num_members >= 3)
version = MPB_VERSION_3OR4_DISK_ARRAY;
else if (get_imsm_raid_level(map) == 1)
version = MPB_VERSION_RAID1;
else
version = MPB_VERSION_RAID0;
}
strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version);
}
}
static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
unsigned long long size, char *name,
char *homehost, int *uuid)
@ -1794,10 +1841,13 @@ static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
"in a raid1 volume\n");
return 0;
}
if (info->level == 10)
if (info->level == 10) {
map->raid_level = 1;
else
map->num_domains = info->raid_disks / 2;
} else {
map->raid_level = info->level;
map->num_domains = !!map->raid_level;
}
map->num_members = info->raid_disks;
for (i = 0; i < map->num_members; i++) {
@ -1807,6 +1857,8 @@ static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
mpb->num_raid_devs++;
super->dev_tbl[super->current_vol] = dev;
imsm_update_version_info(super);
return 1;
}
@ -1825,6 +1877,7 @@ static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
struct intel_super *super;
struct imsm_super *mpb;
size_t mpb_size;
char *version;
if (!info) {
st->sb = NULL;
@ -1845,9 +1898,12 @@ static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
mpb = super->buf;
memset(mpb, 0, mpb_size);
memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE));
memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5,
strlen(MPB_VERSION_RAID5));
mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY;
version = (char *) mpb->sig;
strcpy(version, MPB_SIGNATURE);
version += strlen(MPB_SIGNATURE);
strcpy(version, MPB_VERSION_RAID0);
mpb->mpb_size = mpb_size;
st->sb = super;
@ -3270,6 +3326,9 @@ static void imsm_process_update(struct supertype *st,
disk->status |= CONFIGURED_DISK;
disk->status &= ~SPARE_DISK;
}
imsm_update_version_info(super);
break;
}
case update_add_disk: