shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-23 21:35:29 +03:00
Code Releases Activity

Thin add function to read thin volume percent

Browse Source 
This value returns percentage of 'mapped' size compared with total LV size.
(Without passed seg pointer it return highest mapped size - but it's
not used yet.)
This commit is contained in:
Zdenek Kabelac 2012-01-19 15:27:54 +00:00
parent 9fae965546
commit 491d106031
5 changed files with 84 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
lib/activate/activate.c
View File

@ -736,6 +736,32 @@ int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
return r;
}
/*
* Returns 1 if percent set, else 0 on failure.
*/
int lv_thin_percent(const struct logical_volume *lv,
int mapped, percent_t *percent)
{
int r;
struct dev_manager *dm;
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_percent(dm, lv, mapped, percent)))
stack;
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
View File

@ -103,6 +103,8 @@ int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
int lv_raid_percent(const struct logical_volume *lv, percent_t *percent);
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);
/*
* Return number of LVs in the VG that are active.

22
lib/activate/dev_manager.c
View File

@ -895,6 +895,28 @@ int dev_manager_thin_pool_percent(struct dev_manager *dm,
return 1;
}
int dev_manager_thin_percent(struct dev_manager *dm,
const struct logical_volume *lv,
int mapped, percent_t *percent)
{
char *name;
const char *dlid;
/* Build a name for the top layer */
if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, lv->name, NULL)))
return_0;
if (!(dlid = build_dm_uuid(dm->mem, lv->lvid.s, NULL)))
return_0;
log_debug("Getting device status percentage for %s", name);
if (!(_percent(dm, name, dlid, "thin", 0,
(mapped) ? NULL : lv, percent, NULL, 1)))
return_0;
return 1;
}
/*************************/
/* NEW CODE STARTS HERE */
/*************************/

3
lib/activate/dev_manager.h
View File

@ -57,6 +57,9 @@ int dev_manager_mirror_percent(struct dev_manager *dm,
int dev_manager_thin_pool_percent(struct dev_manager *dm,
const struct logical_volume *lv,
int metadata, percent_t *percent);
int dev_manager_thin_percent(struct dev_manager *dm,
const struct logical_volume *lv,
int mapped, percent_t *percent);
int dev_manager_suspend(struct dev_manager *dm, struct logical_volume *lv,
struct lv_activate_opts *laopts, int lockfs, int flush_required);
int dev_manager_activate(struct dev_manager *dm, struct logical_volume *lv,

31
lib/thin/thin.c
View File

@ -409,6 +409,36 @@ static int _thin_add_target_line(struct dev_manager *dm,
return 1;
}
static int _thin_target_percent(void **target_state __attribute__((unused)),
percent_t *percent,
struct dm_pool *mem,
struct cmd_context *cmd __attribute__((unused)),
struct lv_segment *seg,
char *params,
uint64_t *total_numerator,
uint64_t *total_denominator)
{
struct dm_status_thin *s;
/* Status for thin device is in sectors */
if (!dm_get_status_thin(mem, params, &s))
return_0;
if (seg) {
*percent = make_percent(s->mapped_sectors, seg->lv->size);
*total_denominator += seg->lv->size;
} else {
/* No lv_segment info here */
*percent = PERCENT_INVALID;
/* FIXME: Using denominator to pass the mapped info upward? */
*total_denominator += s->highest_mapped_sector;
}
*total_numerator += s->mapped_sectors;
return 1;
}
static int _thin_target_present(struct cmd_context *cmd,
const struct lv_segment *seg,
unsigned *attributes __attribute__((unused)))
@ -499,6 +529,7 @@ static struct segtype_handler _thin_ops = {
.text_export = _thin_text_export,
#ifdef DEVMAPPER_SUPPORT
.add_target_line = _thin_add_target_line,
.target_percent = _thin_target_percent,
.target_present = _thin_target_present,
# ifdef DMEVENTD
.target_monitored = _target_registered,