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cache: Add lv_cache_setpolicy to cache_manip.c.

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This commit is contained in:
Petr Rockai 2014-11-19 18:38:30 +01:00
parent 0050480c0e
commit d22ffd8c28
2 changed files with 19 additions and 0 deletions
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18
lib/metadata/cache_manip.c
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@ -395,6 +395,24 @@ int lv_is_cache_origin(const struct logical_volume *lv)
return seg && lv_is_cache(seg->lv) && !lv_is_pending_delete(seg->lv) && (seg_lv(seg, 0) == lv);
}
int lv_cache_setpolicy(struct logical_volume *lv, struct dm_config_tree *policy)
{
struct lv_segment *seg = first_seg(lv);
const char *name;
if (lv_is_cache(lv))
seg = first_seg(seg->pool_lv);
if (!(seg->policy_settings = dm_config_clone_node_with_mem(lv->vg->vgmem, policy->root, 0)))
return_0;
if ((name = dm_config_find_str(policy->root, "policy", NULL)) &&
!(seg->policy_name = dm_pool_strdup(lv->vg->vgmem, name)))
return_0;
return 1;
}
/*
* Wipe cache pool metadata area before use.
*

1
lib/metadata/metadata-exported.h
View File

@ -1109,6 +1109,7 @@ int validate_lv_cache_create_origin(const struct logical_volume *origin_lv);
struct logical_volume *lv_cache_create(struct logical_volume *pool,
struct logical_volume *origin);
int lv_cache_remove(struct logical_volume *cache_lv);
int lv_cache_setpolicy(struct logical_volume *cache_lv, struct dm_config_tree *pol);
int wipe_cache_pool(struct logical_volume *cache_pool_lv);
/* -- metadata/cache_manip.c */