mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
270 lines
6.9 KiB
C
270 lines
6.9 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License v.2.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "tools.h"
|
|
|
|
static int _vgmerge_single(struct cmd_context *cmd, const char *vg_name_to,
|
|
const char *vg_name_from)
|
|
{
|
|
struct volume_group *vg_to, *vg_from;
|
|
struct lv_list *lvl1, *lvl2;
|
|
struct pv_list *pvl;
|
|
int active;
|
|
int consistent = 1;
|
|
|
|
if (!strcmp(vg_name_to, vg_name_from)) {
|
|
log_error("Duplicate volume group name \"%s\"", vg_name_from);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
log_verbose("Checking for volume group \"%s\"", vg_name_to);
|
|
if (!lock_vol(cmd, vg_name_to, LCK_VG_WRITE)) {
|
|
log_error("Can't get lock for %s", vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!(vg_to = vg_read(cmd, vg_name_to, NULL, &consistent)) || !consistent) {
|
|
log_error("Volume group \"%s\" doesn't exist", vg_name_to);
|
|
unlock_vg(cmd, vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if ((vg_to->status & CLUSTERED) && !locking_is_clustered() &&
|
|
!lockingfailed()) {
|
|
log_error("Skipping clustered volume group %s", vg_name_to);
|
|
unlock_vg(cmd, vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (vg_to->status & EXPORTED_VG) {
|
|
log_error("Volume group \"%s\" is exported", vg_to->name);
|
|
unlock_vg(cmd, vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!(vg_to->status & LVM_WRITE)) {
|
|
log_error("Volume group \"%s\" is read-only", vg_to->name);
|
|
unlock_vg(cmd, vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
log_verbose("Checking for volume group \"%s\"", vg_name_from);
|
|
if (!lock_vol(cmd, vg_name_from, LCK_VG_WRITE | LCK_NONBLOCK)) {
|
|
log_error("Can't get lock for %s", vg_name_from);
|
|
unlock_vg(cmd, vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
consistent = 1;
|
|
if (!(vg_from = vg_read(cmd, vg_name_from, NULL, &consistent)) || !consistent) {
|
|
log_error("Volume group \"%s\" doesn't exist", vg_name_from);
|
|
goto error;
|
|
}
|
|
|
|
if ((vg_from->status & CLUSTERED) && !locking_is_clustered() &&
|
|
!lockingfailed()) {
|
|
log_error("Skipping clustered volume group %s", vg_name_from);
|
|
goto error;
|
|
}
|
|
|
|
if (vg_from->status & EXPORTED_VG) {
|
|
log_error("Volume group \"%s\" is exported", vg_from->name);
|
|
goto error;
|
|
}
|
|
|
|
if (!(vg_from->status & LVM_WRITE)) {
|
|
log_error("Volume group \"%s\" is read-only", vg_from->name);
|
|
goto error;
|
|
}
|
|
|
|
if ((active = lvs_in_vg_activated(vg_from))) {
|
|
log_error("Logical volumes in \"%s\" must be inactive",
|
|
vg_name_from);
|
|
goto error;
|
|
}
|
|
|
|
/* Check compatibility */
|
|
if (vg_to->extent_size != vg_from->extent_size) {
|
|
log_error("Extent sizes differ: %d (%s) and %d (%s)",
|
|
vg_to->extent_size, vg_to->name,
|
|
vg_from->extent_size, vg_from->name);
|
|
goto error;
|
|
}
|
|
|
|
if (vg_to->max_pv &&
|
|
(vg_to->max_pv < vg_to->pv_count + vg_from->pv_count)) {
|
|
log_error("Maximum number of physical volumes (%d) exceeded "
|
|
" for \"%s\" and \"%s\"", vg_to->max_pv, vg_to->name,
|
|
vg_from->name);
|
|
goto error;
|
|
}
|
|
|
|
if (vg_to->max_lv &&
|
|
(vg_to->max_lv < vg_to->lv_count + vg_from->lv_count)) {
|
|
log_error("Maximum number of logical volumes (%d) exceeded "
|
|
" for \"%s\" and \"%s\"", vg_to->max_lv, vg_to->name,
|
|
vg_from->name);
|
|
goto error;
|
|
}
|
|
|
|
/* Check no conflicts with LV names */
|
|
list_iterate_items(lvl1, &vg_to->lvs) {
|
|
char *name1 = lvl1->lv->name;
|
|
|
|
list_iterate_items(lvl2, &vg_from->lvs) {
|
|
char *name2 = lvl2->lv->name;
|
|
|
|
if (!strcmp(name1, name2)) {
|
|
log_error("Duplicate logical volume "
|
|
"name \"%s\" "
|
|
"in \"%s\" and \"%s\"",
|
|
name1, vg_to->name, vg_from->name);
|
|
goto error;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check no PVs are constructed from either VG */
|
|
list_iterate_items(pvl, &vg_to->pvs) {
|
|
if (pv_uses_vg(pvl->pv, vg_from)) {
|
|
log_error("Physical volume %s might be constructed "
|
|
"from same volume group %s.",
|
|
dev_name(pvl->pv->dev), vg_from->name);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
list_iterate_items(pvl, &vg_from->pvs) {
|
|
if (pv_uses_vg(pvl->pv, vg_to)) {
|
|
log_error("Physical volume %s might be constructed "
|
|
"from same volume group %s.",
|
|
dev_name(pvl->pv->dev), vg_to->name);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
/* FIXME List arg: vg_show_with_pv_and_lv(vg_to); */
|
|
|
|
if (!archive(vg_from) || !archive(vg_to))
|
|
goto error;
|
|
|
|
/* Merge volume groups */
|
|
while (!list_empty(&vg_from->pvs)) {
|
|
struct list *pvh = vg_from->pvs.n;
|
|
struct physical_volume *pv;
|
|
|
|
list_del(pvh);
|
|
list_add(&vg_to->pvs, pvh);
|
|
|
|
pv = list_item(pvh, struct pv_list)->pv;
|
|
pv->vg_name = dm_pool_strdup(cmd->mem, vg_to->name);
|
|
}
|
|
vg_to->pv_count += vg_from->pv_count;
|
|
|
|
/* Fix up LVIDs */
|
|
list_iterate_items(lvl1, &vg_to->lvs) {
|
|
union lvid *lvid1 = &lvl1->lv->lvid;
|
|
char uuid[64] __attribute((aligned(8)));
|
|
|
|
list_iterate_items(lvl2, &vg_from->lvs) {
|
|
union lvid *lvid2 = &lvl2->lv->lvid;
|
|
|
|
if (id_equal(&lvid1->id[1], &lvid2->id[1])) {
|
|
if (!id_create(&lvid2->id[1])) {
|
|
log_error("Failed to generate new "
|
|
"random LVID for %s",
|
|
lvl2->lv->name);
|
|
goto error;
|
|
}
|
|
if (!id_write_format(&lvid2->id[1], uuid,
|
|
sizeof(uuid))) {
|
|
stack;
|
|
goto error;
|
|
}
|
|
|
|
log_verbose("Changed LVID for %s to %s",
|
|
lvl2->lv->name, uuid);
|
|
}
|
|
}
|
|
}
|
|
|
|
while (!list_empty(&vg_from->lvs)) {
|
|
struct list *lvh = vg_from->lvs.n;
|
|
|
|
list_del(lvh);
|
|
list_add(&vg_to->lvs, lvh);
|
|
}
|
|
|
|
while (!list_empty(&vg_from->fid->metadata_areas)) {
|
|
struct list *mdah = vg_from->fid->metadata_areas.n;
|
|
|
|
list_del(mdah);
|
|
list_add(&vg_to->fid->metadata_areas, mdah);
|
|
}
|
|
|
|
vg_to->lv_count += vg_from->lv_count;
|
|
|
|
vg_to->extent_count += vg_from->extent_count;
|
|
vg_to->free_count += vg_from->free_count;
|
|
|
|
/* store it on disks */
|
|
log_verbose("Writing out updated volume group");
|
|
if (!vg_write(vg_to) || !vg_commit(vg_to)) {
|
|
goto error;
|
|
}
|
|
|
|
/* FIXME Remove /dev/vgfrom */
|
|
|
|
backup(vg_to);
|
|
|
|
unlock_vg(cmd, vg_name_from);
|
|
unlock_vg(cmd, vg_name_to);
|
|
|
|
log_print("Volume group \"%s\" successfully merged into \"%s\"",
|
|
vg_from->name, vg_to->name);
|
|
return ECMD_PROCESSED;
|
|
|
|
error:
|
|
unlock_vg(cmd, vg_name_from);
|
|
unlock_vg(cmd, vg_name_to);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
int vgmerge(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
char *vg_name_to, *vg_name_from;
|
|
int opt = 0;
|
|
int ret = 0, ret_max = 0;
|
|
|
|
if (argc < 2) {
|
|
log_error("Please enter 2 or more volume groups to merge");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
vg_name_to = skip_dev_dir(cmd, argv[0]);
|
|
argc--;
|
|
argv++;
|
|
|
|
for (; opt < argc; opt++) {
|
|
vg_name_from = skip_dev_dir(cmd, argv[opt]);
|
|
|
|
ret = _vgmerge_single(cmd, vg_name_to, vg_name_from);
|
|
if (ret > ret_max)
|
|
ret_max = ret;
|
|
}
|
|
|
|
return ret_max;
|
|
}
|