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cache: use DM_CACHE_FEATURE_METADATA2 with libdm

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Call libdm  with new feature flag when metadata format 2 is selected
and available in kernel cache target.
This commit is contained in:
Zdenek Kabelac 2017-02-25 12:49:55 +01:00
parent 518b814cdb
commit 825c16e57e
1 changed files with 21 additions and 0 deletions
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21
lib/cache_segtype/cache.c
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@ -445,6 +445,7 @@ static int _cache_add_target_line(struct dev_manager *dm,
struct lv_segment *cache_pool_seg;
char *metadata_uuid, *data_uuid, *origin_uuid;
uint64_t feature_flags = 0;
unsigned attr;
if (!seg->pool_lv || !seg_is_cache(seg)) {
log_error(INTERNAL_ERROR "Passed segment is not cache.");
@ -472,6 +473,26 @@ static int _cache_add_target_line(struct dev_manager *dm,
break;
}
switch (cache_pool_seg->cache_metadata_format) {
case CACHE_METADATA_FORMAT_1: break;
case CACHE_METADATA_FORMAT_2:
if (!_target_present(cmd, NULL, &attr))
return_0;
if (!(attr & CACHE_FEATURE_METADATA2)) {
log_error("LV %s has metadata format %u unsuported by kernel.",
display_lvname(seg->lv), cache_pool_seg->cache_metadata_format);
return 0;
}
feature_flags |= DM_CACHE_FEATURE_METADATA2;
log_debug_activation("Using metadata2 format for %s.", display_lvname(seg->lv));
break;
default:
log_error(INTERNAL_ERROR "LV %s has unknown metadata format %u.",
display_lvname(seg->lv), cache_pool_seg->cache_metadata_format);
return 0;
}
if (!(metadata_uuid = build_dm_uuid(mem, cache_pool_seg->metadata_lv, NULL)))
return_0;