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LVM2/liblvm lvm2app.h lvm_lv.c
- From: mornfall at sourceware dot org
- To: lvm-devel at redhat dot com, lvm2-cvs at sourceware dot org
- Date: 17 Nov 2010 20:07:02 -0000
- Subject: LVM2/liblvm lvm2app.h lvm_lv.c
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: mornfall@sourceware.org 2010-11-17 20:07:01
Modified files:
liblvm : lvm2app.h lvm_lv.c
Log message:
Add a new type and function to lvm2app to enumerate lvsegs.
Signed-off-by: Dave Wysochanski <wysochanski@pobox.com>
Reviewed-by: Petr Rockai <prockai@redhat.com>
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm2app.h.diff?cvsroot=lvm2&r1=1.24&r2=1.25
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_lv.c.diff?cvsroot=lvm2&r1=1.28&r2=1.29
--- LVM2/liblvm/lvm2app.h 2010/11/17 19:16:05 1.24
+++ LVM2/liblvm/lvm2app.h 2010/11/17 20:07:01 1.25
@@ -95,6 +95,7 @@
struct physical_volume;
struct volume_group;
struct logical_volume;
+struct lv_segment;
/**
* \class lvm_t
@@ -137,6 +138,13 @@
typedef struct physical_volume *pv_t;
/**
+ * \class lvseg_t
+ *
+ * This lv segment object is bound to a lv_t.
+ */
+typedef struct lv_segment *lvseg_t;
+
+/**
* Logical Volume object list.
*
* Lists of these structures are returned by lvm_vg_list_lvs().
@@ -147,6 +155,16 @@
} lv_list_t;
/**
+ * Logical Volume Segment object list.
+ *
+ * Lists of these structures are returned by lvm_lv_list_lvsegs().
+ */
+typedef struct lvm_lvseg_list {
+ struct dm_list list;
+ lvseg_t lvseg;
+} lvseg_list_t;
+
+/**
* Physical volume object list.
*
* Lists of these structures are returned by lvm_vg_list_pvs().
@@ -966,6 +984,19 @@
lv_t lvm_vg_create_lv_linear(vg_t vg, const char *name, uint64_t size);
/**
+ * Return a list of lvseg handles for a given LV handle.
+ *
+ * \memberof lv_t
+ *
+ * \param lv
+ * Logical volume handle.
+ *
+ * \return
+ * A list of lvm_lvseg_list structures containing lvseg handles for this lv.
+ */
+struct dm_list *lvm_lv_list_lvsegs(lv_t lv);
+
+/**
* Activate a logical volume.
*
* \memberof lv_t
--- LVM2/liblvm/lvm_lv.c 2010/11/11 17:29:06 1.28
+++ LVM2/liblvm/lvm_lv.c 2010/11/17 20:07:01 1.29
@@ -216,6 +216,33 @@
return 0;
}
+struct dm_list *lvm_lv_list_lvsegs(lv_t lv)
+{
+ struct dm_list *list;
+ lvseg_list_t *lvseg;
+ struct lv_segment *lvl;
+
+ if (dm_list_empty(&lv->segments))
+ return NULL;
+
+ if (!(list = dm_pool_zalloc(lv->vg->vgmem, sizeof(*list)))) {
+ log_errno(ENOMEM, "Memory allocation fail for dm_list.");
+ return NULL;
+ }
+ dm_list_init(list);
+
+ dm_list_iterate_items(lvl, &lv->segments) {
+ if (!(lvseg = dm_pool_zalloc(lv->vg->vgmem, sizeof(*lvseg)))) {
+ log_errno(ENOMEM,
+ "Memory allocation fail for lvm_lvseg_list.");
+ return NULL;
+ }
+ lvseg->lvseg = lvl;
+ dm_list_add(list, &lvseg->list);
+ }
+ return list;
+}
+
int lvm_lv_resize(const lv_t lv, uint64_t new_size)
{
/* FIXME: add lv resize code here */