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Add a new type and function to lvm2app to enumerate pvsegs.

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Signed-off-by: Dave Wysochanski <wysochanski@pobox.com>
Reviewed-by: Petr Rockai <prockai@redhat.com>
This commit is contained in:
Petr Rockai 2010-11-17 20:10:42 +00:00
parent 5de70620ef
commit b2b27cd7f4
2 changed files with 58 additions and 0 deletions
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31
liblvm/lvm2app.h
View File

@ -96,6 +96,7 @@ struct physical_volume;
struct volume_group;
struct logical_volume;
struct lv_segment;
struct pv_segment;
/**
* \class lvm_t
@ -144,6 +145,13 @@ typedef struct physical_volume *pv_t;
*/
typedef struct lv_segment *lvseg_t;
/**
* \class pvseg_t
*
* This pv segment object is bound to a pv_t.
*/
typedef struct pv_segment *pvseg_t;
/**
* Logical Volume object list.
*
@ -174,6 +182,16 @@ typedef struct lvm_pv_list {
pv_t pv;
} pv_list_t;
/**
* Physical Volume Segment object list.
*
* Lists of these structures are returned by lvm_pv_list_pvsegs().
*/
typedef struct lvm_pvseg_list {
struct dm_list list;
pvseg_t pvseg;
} pvseg_list_t;
/**
* String list.
*
@ -1418,6 +1436,19 @@ uint64_t lvm_pv_get_free(const pv_t pv);
*/
struct lvm_property_value lvm_pv_get_property(const pv_t pv, const char *name);
/**
* Return a list of pvseg handles for a given PV handle.
*
* \memberof pv_t
*
* \param pv
* Physical volume handle.
*
* \return
* A list of lvm_pvseg_list structures containing pvseg handles for this pv.
*/
struct dm_list *lvm_pv_list_pvsegs(pv_t pv);
/**
* Resize physical volume to new_size bytes.
*

27
liblvm/lvm_pv.c
View File

@ -54,6 +54,33 @@ struct lvm_property_value lvm_pv_get_property(const pv_t pv, const char *name)
return get_property(pv, NULL, NULL, NULL, name);
}
struct dm_list *lvm_pv_list_pvsegs(pv_t pv)
{
struct dm_list *list;
pvseg_list_t *pvseg;
struct pv_segment *pvl;
if (dm_list_empty(&pv->segments))
return NULL;
if (!(list = dm_pool_zalloc(pv->vg->vgmem, sizeof(*list)))) {
log_errno(ENOMEM, "Memory allocation fail for dm_list.");
return NULL;
}
dm_list_init(list);
dm_list_iterate_items(pvl, &pv->segments) {
if (!(pvseg = dm_pool_zalloc(pv->vg->vgmem, sizeof(*pvseg)))) {
log_errno(ENOMEM,
"Memory allocation fail for lvm_pvseg_list.");
return NULL;
}
pvseg->pvseg = pvl;
dm_list_add(list, &pvseg->list);
}
return list;
}
int lvm_pv_resize(const pv_t pv, uint64_t new_size)
{
/* FIXME: add pv resize code here */