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Add lvm_lv_is_active and lvm_lv_is_suspended.

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Return whether an LV is active in the kernel (live table) or suspended
(table suspend).


Author: Dave Wysochanski <dwysocha@redhat.com>
This commit is contained in:
Dave Wysochanski 2009-07-26 20:58:11 +00:00
parent 63b186b6f7
commit 2642ef553a
3 changed files with 39 additions and 0 deletions
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2
liblvm/.exported_symbols
View File

@ -17,6 +17,8 @@ lvm_lv_deactivate
lvm_lv_get_uuid
lvm_lv_get_name
lvm_lv_get_size
lvm_lv_is_active
lvm_lv_is_suspended
lvm_vg_create
lvm_vg_extend
lvm_vg_set_extent_size

18
liblvm/lvm.h
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@ -516,6 +516,24 @@ char *lvm_lv_get_name(const lv_t *lv);
*/
uint64_t lvm_lv_get_size(const lv_t *lv);
/**
* Get the current activation state of a logical volume.
*
* \param lv
* Logical volume handle.
* \return 1 if the LV is active in the kernel, 0 if not
*/
uint64_t lvm_lv_is_active(const lv_t *lv);
/**
* Get the current suspended state of a logical volume.
*
* \param lv
* Logical volume handle.
* \return 1 if the LV is suspended in the kernel, 0 if not
*/
uint64_t lvm_lv_is_suspended(const lv_t *lv);
/************************** physical volume handling ************************/
/**

19
liblvm/lvm_lv.c
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@ -19,6 +19,7 @@
#include "defaults.h"
#include "segtype.h"
#include "locking.h"
#include "activate.h"
#include <string.h>
@ -49,6 +50,24 @@ char *lvm_lv_get_name(const lv_t *lv)
return name;
}
uint64_t lvm_lv_is_active(const lv_t *lv)
{
struct lvinfo info;
if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
info.exists && info.live_table)
return 1;
return 0;
}
uint64_t lvm_lv_is_suspended(const lv_t *lv)
{
struct lvinfo info;
if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
info.exists && info.suspended)
return 1;
return 0;
}
/* Set defaults for non-segment specific LV parameters */
static void _lv_set_default_params(struct lvcreate_params *lp,
vg_t *vg, const char *lvname,