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imsm: set array size at Create/Assemble 

imsm arrays round down the effective array size to the closest 1
megabyte boundary so teach get_info_super_imsm and sysfs_set_array to
set 'md/array_size' if available (and make sure ddf uses the default
size).

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2009-04-12 00:58:28 -07:00
parent da18878954
commit da9b4a62af
4 changed files with 21 additions and 0 deletions
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3
mdadm.h
View File

@ -146,6 +146,9 @@ struct mdinfo {
unsigned long long component_size; /* same as array.size, except in
* sectors and up to 64bits.
*/
unsigned long long custom_array_size; /* size for non-default sized
* arrays (in sectors)
*/
int reshape_active;
unsigned long long reshape_progress;
unsigned long long resync_start;

1
super-ddf.c
View File

@ -1374,6 +1374,7 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info)
__be32_to_cpu(*(__u32*)(vc->conf.guid+16));
info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp);
info->array.chunk_size = 512 << vc->conf.chunk_shift;
info->custom_array_size = 0;
if (cd >= 0 && cd < ddf->mppe) {
info->data_offset = __be64_to_cpu(vc->lba_offset[cd]);

3
super-intel.c
View File

@ -1203,6 +1203,9 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info)
info->array.utime = 0;
info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9;
info->array.state = !dev->vol.dirty;
info->custom_array_size = __le32_to_cpu(dev->size_high);
info->custom_array_size <<= 32;
info->custom_array_size |= __le32_to_cpu(dev->size_low);
info->disk.major = 0;
info->disk.minor = 0;

14
sysfs.c
View File

@ -506,6 +506,20 @@ int sysfs_set_array(struct mdinfo *info, int vers)
rv |= sysfs_set_num(info, NULL, "chunk_size", info->array.chunk_size);
rv |= sysfs_set_num(info, NULL, "layout", info->array.layout);
rv |= sysfs_set_num(info, NULL, "component_size", info->component_size/2);
if (info->custom_array_size) {
int rc;
rc = sysfs_set_num(info, NULL, "array_size",
info->custom_array_size/2);
if (rc && errno == ENOENT) {
fprintf(stderr, Name ": This kernel does not "
"have the md/array_size attribute, "
"the array may be larger than expected\n");
rc = 0;
}
rv |= rc;
}
if (info->array.level > 0)
rv |= sysfs_set_num(info, NULL, "resync_start", info->resync_start);
return rv;