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Thin add lv_thin_pool_transaction_id

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Easy function to get transaction_id status value.
This commit is contained in:
Zdenek Kabelac 2012-01-25 08:48:42 +00:00
parent 4173a22832
commit bdba904d7c
5 changed files with 77 additions and 0 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.89 -
==================================
Add lv_thin_pool_transaction_id to read the transaction_id value.
Use suspend|resume_origin_only when up-converting RAID, as mirrors do.
Fix the way RAID meta LVs are added to the dependency tree.
Change exclusive LV activation logic to try local node before remote nodes.

29
lib/activate/activate.c
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@ -762,6 +762,35 @@ int lv_thin_percent(const struct logical_volume *lv,
return r;
}
/*
* Returns 1 if transaction_id set, else 0 on failure.
*/
int lv_thin_pool_transaction_id(const struct logical_volume *lv,
uint64_t *transaction_id)
{
int r;
struct dev_manager *dm;
struct dm_status_thin_pool *status;
if (!activation())
return 0;
log_debug("Checking thin percent for LV %s/%s",
lv->vg->name, lv->name);
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
return_0;
if (!(r = dev_manager_thin_pool_status(dm, lv, &status)))
stack;
else
*transaction_id = status->transaction_id;
dev_manager_destroy(dm);
return r;
}
static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv)
{
struct lvinfo info;

2
lib/activate/activate.h
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@ -105,6 +105,8 @@ int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
percent_t *percent);
int lv_thin_percent(const struct logical_volume *lv, int mapped,
percent_t *percent);
int lv_thin_pool_transaction_id(const struct logical_volume *lv,
uint64_t *transaction_id);
/*
* Return number of LVs in the VG that are active.

42
lib/activate/dev_manager.c
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@ -882,6 +882,48 @@ static int _belong_to_vg(const char *vgname, const char *name)
#endif
int dev_manager_thin_pool_status(struct dev_manager *dm,
const struct logical_volume *lv,
struct dm_status_thin_pool **status)
{
const char *dlid;
struct dm_task *dmt;
struct dm_info info;
uint64_t start, length;
char *type = NULL;
char *params = NULL;
int r = 0;
/* Build dlid for the thin pool layer */
if (!(dlid = build_dm_uuid(dm->mem, lv->lvid.s, _thin_layer)))
return_0;
log_debug("Getting thin pool device status for %s.", lv->name);
if (!(dmt = _setup_task(NULL, dlid, 0, DM_DEVICE_STATUS, 0, 0)))
return_0;
if (!dm_task_no_open_count(dmt))
log_error("Failed to disable open_count.");
if (!dm_task_run(dmt))
goto_out;
if (!dm_task_get_info(dmt, &info) || !info.exists)
goto_out;
dm_get_next_target(dmt, NULL, &start, &length, &type, &params);
if (!dm_get_status_thin_pool(dm->mem, params, status))
goto_out;
r = 1;
out:
dm_task_destroy(dmt);
return r;
}
int dev_manager_thin_pool_percent(struct dev_manager *dm,
const struct logical_volume *lv,
int metadata, percent_t *percent)

3
lib/activate/dev_manager.h
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@ -54,6 +54,9 @@ int dev_manager_snapshot_percent(struct dev_manager *dm,
int dev_manager_mirror_percent(struct dev_manager *dm,
const struct logical_volume *lv, int wait,
percent_t *percent, uint32_t *event_nr);
int dev_manager_thin_pool_status(struct dev_manager *dm,
const struct logical_volume *lv,
struct dm_status_thin_pool **status);
int dev_manager_thin_pool_percent(struct dev_manager *dm,
const struct logical_volume *lv,
int metadata, percent_t *percent);