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imsm: fix raid1 creation 

Need to supply dummy values for the chunk size and number of data stripes

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2008-06-24 21:56:19 -07:00
parent 0372d5a2f4
commit ef6ffaded4
1 changed files with 28 additions and 5 deletions
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33
super-intel.c
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@ -1022,6 +1022,24 @@ static int load_super_imsm(struct supertype *st, int fd, char *devname)
return 0;
}
static __u16 info_to_blocks_per_strip(mdu_array_info_t *info)
{
if (info->level == 1)
return 128;
return info->chunk_size >> 9;
}
static __u32 info_to_num_data_stripes(mdu_array_info_t *info)
{
__u32 num_stripes;
num_stripes = (info->size * 2) / info_to_blocks_per_strip(info);
if (info->level == 1)
num_stripes /= 2;
return num_stripes;
}
static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
unsigned long long size, char *name,
char *homehost, int *uuid)
@ -1037,7 +1055,6 @@ static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
int idx = mpb->num_raid_devs;
int i;
unsigned long long array_blocks;
unsigned long long sz;
__u32 offset = 0;
size_t size_old, size_new;
@ -1090,16 +1107,22 @@ static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
}
map = &vol->map[0];
map->pba_of_lba0 = __cpu_to_le32(offset);
sz = info->size * 2;
map->blocks_per_member = __cpu_to_le32(sz);
map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9);
map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9));
map->blocks_per_member = __cpu_to_le32(info->size * 2);
map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info));
map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info));
map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED :
IMSM_T_STATE_NORMAL;
if (info->level == 1 && info->raid_disks > 2) {
fprintf(stderr, Name": imsm does not support more than 2 disks"
"in a raid1 volume\n");
return 0;
}
if (info->level == 10)
map->raid_level = 1;
else
map->raid_level = info->level;
map->num_members = info->raid_disks;
for (i = 0; i < map->num_members; i++) {
/* initialized in add_to_super */