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Implement lvm_lv_activate and lvm_lv_deactivate liblvm calls.

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Limited implementation but other types of activation should probably have
separate calls.  We also currently do not handle pvmoves or lvconverts.


Author: Dave Wysochanski <dwysocha@redhat.com>
This commit is contained in:
Dave Wysochanski 2009-07-26 20:57:37 +00:00
parent bd1dcfbe96
commit 63b186b6f7
3 changed files with 77 additions and 0 deletions
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2
liblvm/.exported_symbols
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@ -12,6 +12,8 @@ lvm_vg_get_extent_size
lvm_vg_get_extent_count
lvm_vg_get_free_extent_count
lvm_vg_get_pv_count
lvm_lv_activate
lvm_lv_deactivate
lvm_lv_get_uuid
lvm_lv_get_name
lvm_lv_get_size

25
liblvm/lvm.h
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@ -442,6 +442,31 @@ struct dm_list *lvm_vg_list_lvs(vg_t *vg);
*/
lv_t *lvm_vg_create_lv_linear(vg_t *vg, const char *name, uint64_t size);
/**
* Activate a logical volume.
*
* This API is the equivalent of the lvm command "lvchange -ay".
*
* NOTE: This API cannot currently handle LVs with an in-progress pvmove or
* lvconvert.
*
* \param lv
* Logical volume handle.
* \return 0 (success) or -1 (failure).
*/
int lvm_lv_activate(lv_t *lv);
/**
* Deactivate a logical volume.
*
* This API is the equivalent of the lvm command "lvchange -an".
*
* \param lv
* Logical volume handle.
* \return 0 (success) or -1 (failure).
*/
int lvm_lv_deactivate(lv_t *lv);
/**
* Remove a logical volume from a volume group.
*

50
liblvm/lvm_lv.c
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@ -18,6 +18,8 @@
#include "lvm-string.h"
#include "defaults.h"
#include "segtype.h"
#include "locking.h"
#include <string.h>
/* FIXME: have lib/report/report.c _disp function call lv_size()? */
@ -104,3 +106,51 @@ int lvm_vg_remove_lv(lv_t *lv)
return -1;
return 0;
}
int lvm_lv_activate(lv_t *lv)
{
if (!lv || !lv->vg || vg_read_error(lv->vg) || !lv->vg->cmd)
return -1;
/* FIXME: handle pvmove stuff later */
if (lv->status & LOCKED) {
log_error("Unable to activate locked LV\n");
return -1;
}
/* FIXME: handle lvconvert stuff later */
if (lv->status & CONVERTING) {
log_error("Unable to activate LV with in-progress lvconvert\n");
return -1;
}
if (lv_is_origin(lv)) {
log_verbose("Activating logical volume \"%s\" "
"exclusively", lv->name);
if (!activate_lv_excl(lv->vg->cmd, lv)) {
log_error("Activate exclusive failed.\n");
return -1;
}
} else {
log_verbose("Activating logical volume \"%s\"",
lv->name);
if (!activate_lv(lv->vg->cmd, lv)) {
log_error("Activate failed.\n");
return -1;
}
}
return 0;
}
int lvm_lv_deactivate(lv_t *lv)
{
if (!lv || !lv->vg || vg_read_error(lv->vg) || !lv->vg->cmd)
return -1;
log_verbose("Deactivating logical volume \"%s\"", lv->name);
if (!deactivate_lv(lv->vg->cmd, lv)) {
log_error("Deactivate failed.\n");
return -1;
}
return 0;
}