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thin: add alloc_pool_metadata

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Since our api call is not yet powerfull enough,
use this wrapper to preset options.
This commit is contained in:
Zdenek Kabelac 2012-11-19 13:37:36 +01:00
parent f4137640f6
commit b786096863
2 changed files with 49 additions and 0 deletions
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44
tools/toollib.c
View File

@ -1650,6 +1650,50 @@ int update_pool_params(struct cmd_context *cmd, unsigned attr,
return 1;
}
struct logical_volume *alloc_pool_metadata(struct logical_volume *pool_lv,
alloc_policy_t alloc,
const char *name,
struct dm_list *pvh,
uint32_t read_ahead,
uint32_t stripes,
uint32_t stripe_size,
uint64_t size)
{
struct logical_volume *metadata_lv;
struct lvcreate_params lvc;
/* FIXME: Make lvm2api usable */
memset(&lvc, 0, sizeof(lvc));
if (!(lvc.extents = extents_from_size(pool_lv->vg->cmd, size,
pool_lv->vg->extent_size)))
return_0;
if (!(lvc.segtype = get_segtype_from_string(pool_lv->vg->cmd, "striped")))
return_0;
dm_list_init(&lvc.tags);
/* FIXME: allocate properly space for metadata_lv */
lvc.activate = CHANGE_ALY;
lvc.alloc = alloc;
lvc.lv_name = name;
lvc.major = -1;
lvc.minor = -1;
lvc.permission = LVM_READ | LVM_WRITE;
lvc.pvh = pvh;
lvc.read_ahead = read_ahead;
lvc.stripe_size = stripe_size;
lvc.stripes = stripes;
lvc.vg_name = pool_lv->vg->name;
lvc.zero = 1;
if (!(metadata_lv = lv_create_single(pool_lv->vg, &lvc)))
return_0;
return metadata_lv;
}
/*
* Generic stripe parameter checks.
*/

5
tools/toollib.h
View File

@ -120,6 +120,11 @@ int update_pool_params(struct cmd_context *cmd, unsigned attr,
uint32_t data_extents, uint32_t extent_size,
uint32_t *chunk_size, thin_discards_t *discards,
uint64_t *pool_metadata_size);
struct logical_volume *alloc_pool_metadata(struct logical_volume *pool_lv,
alloc_policy_t alloc, const char *name,
struct dm_list *pvh, uint32_t read_ahead,
uint32_t stripes, uint32_t stripe_size,
uint64_t size);
int get_stripe_params(struct cmd_context *cmd, uint32_t *stripes,
uint32_t *stripe_size);