mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
361 lines
8.5 KiB
C
361 lines
8.5 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 _remove_pv(struct volume_group *vg, struct pv_list *pvl)
|
|
{
|
|
char uuid[64];
|
|
|
|
if (vg->pv_count == 1) {
|
|
log_error("Volume Groups must always contain at least one PV");
|
|
return 0;
|
|
}
|
|
|
|
if (!id_write_format(&pvl->pv->id, uuid, sizeof(uuid))) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
|
|
log_verbose("Removing PV with UUID %s from VG %s", uuid, vg->name);
|
|
|
|
if (pvl->pv->pe_alloc_count) {
|
|
log_error("LVs still present on PV with UUID %s: Can't remove "
|
|
"from VG %s", uuid, vg->name);
|
|
return 0;
|
|
}
|
|
|
|
vg->free_count -= pvl->pv->pe_count;
|
|
vg->extent_count -= pvl->pv->pe_count;
|
|
vg->pv_count--;
|
|
|
|
list_del(&pvl->list);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _remove_lv(struct cmd_context *cmd, struct logical_volume *lv,
|
|
int *list_unsafe)
|
|
{
|
|
struct snapshot *snap;
|
|
struct snapshot_list *snl;
|
|
struct list *snaplist;
|
|
|
|
log_verbose("%s/%s has missing extents: removing (including "
|
|
"dependencies)", lv->vg->name, lv->name);
|
|
|
|
/* Deactivate if necessary */
|
|
if (!lv_is_cow(lv)) {
|
|
log_verbose("Deactivating (if active) logical volume %s",
|
|
lv->name);
|
|
|
|
if (!deactivate_lv(cmd, lv->lvid.s)) {
|
|
log_error("Failed to deactivate LV %s", lv->name);
|
|
return 0;
|
|
}
|
|
} else if ((snap = find_cow(lv))) {
|
|
log_verbose("Deactivating (if active) logical volume %s "
|
|
"(origin of %s)", snap->origin->name, lv->name);
|
|
|
|
if (!deactivate_lv(cmd, snap->origin->lvid.s)) {
|
|
log_error("Failed to deactivate LV %s",
|
|
snap->origin->name);
|
|
return 0;
|
|
}
|
|
|
|
/* Use the origin LV */
|
|
lv = snap->origin;
|
|
}
|
|
|
|
/* Remove snapshot dependencies */
|
|
if (!(snaplist = find_snapshots(lv))) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
/* List may be empty */
|
|
list_iterate_items(snl, snaplist) {
|
|
*list_unsafe = 1; /* May remove caller's lvht! */
|
|
snap = snl->snapshot;
|
|
if (!vg_remove_snapshot(lv->vg, snap->cow)) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
log_verbose("Removing LV %s from VG %s", snap->cow->name,
|
|
lv->vg->name);
|
|
if (!lv_remove(lv->vg, snap->cow)) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Remove the LV itself */
|
|
log_verbose("Removing LV %s from VG %s", lv->name, lv->vg->name);
|
|
if (!lv_remove(lv->vg, lv)) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _make_vg_consistent(struct cmd_context *cmd, struct volume_group *vg)
|
|
{
|
|
struct list *pvh, *pvht;
|
|
struct list *lvh, *lvht;
|
|
struct pv_list *pvl;
|
|
struct logical_volume *lv;
|
|
struct physical_volume *pv;
|
|
struct lv_segment *seg;
|
|
unsigned int s;
|
|
int list_unsafe;
|
|
|
|
/* Deactivate & remove necessary LVs */
|
|
restart_loop:
|
|
list_unsafe = 0; /* Set if we delete a different list-member */
|
|
|
|
list_iterate_safe(lvh, lvht, &vg->lvs) {
|
|
lv = list_item(lvh, struct lv_list)->lv;
|
|
|
|
/* Are any segments of this LV on missing PVs? */
|
|
list_iterate_items(seg, &lv->segments) {
|
|
for (s = 0; s < seg->area_count; s++) {
|
|
if (seg->area[s].type != AREA_PV)
|
|
continue;
|
|
|
|
/* FIXME Also check for segs on deleted LVs */
|
|
|
|
pv = seg->area[s].u.pv.pv;
|
|
if (!pv || !pv->dev) {
|
|
if (!_remove_lv(cmd, lv, &list_unsafe)) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
if (list_unsafe)
|
|
goto restart_loop;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Remove missing PVs */
|
|
list_iterate_safe(pvh, pvht, &vg->pvs) {
|
|
pvl = list_item(pvh, struct pv_list);
|
|
if (pvl->pv->dev)
|
|
continue;
|
|
if (!_remove_pv(vg, pvl)) {
|
|
stack;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Or take pv_name instead? */
|
|
static int _vgreduce_single(struct cmd_context *cmd, struct volume_group *vg,
|
|
struct physical_volume *pv, void *handle)
|
|
{
|
|
struct pv_list *pvl;
|
|
const char *name = dev_name(pv->dev);
|
|
|
|
if (pv->pe_alloc_count) {
|
|
log_error("Physical volume \"%s\" still in use", name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (vg->pv_count == 1) {
|
|
log_error("Can't remove final physical volume \"%s\" from "
|
|
"volume group \"%s\"", name, vg->name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
pvl = find_pv_in_vg(vg, name);
|
|
|
|
if (!archive(vg))
|
|
return ECMD_FAILED;
|
|
|
|
log_verbose("Removing \"%s\" from volume group \"%s\"", name, vg->name);
|
|
|
|
if (pvl)
|
|
list_del(&pvl->list);
|
|
|
|
pv->vg_name = ORPHAN;
|
|
vg->pv_count--;
|
|
vg->free_count -= pv->pe_count - pv->pe_alloc_count;
|
|
vg->extent_count -= pv->pe_count;
|
|
|
|
if (!vg_write(vg) || !vg_commit(vg)) {
|
|
log_error("Removal of physical volume \"%s\" from "
|
|
"\"%s\" failed", name, vg->name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!pv_write(cmd, pv, NULL, INT64_C(-1))) {
|
|
log_error("Failed to clear metadata from physical "
|
|
"volume \"%s\" "
|
|
"after removal from \"%s\"", name, vg->name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
backup(vg);
|
|
|
|
log_print("Removed \"%s\" from volume group \"%s\"", name, vg->name);
|
|
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
int vgreduce(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
struct volume_group *vg;
|
|
char *vg_name;
|
|
int ret = 1;
|
|
int consistent = 1;
|
|
|
|
if (!argc & !arg_count(cmd, removemissing_ARG)) {
|
|
log_error("Please give volume group name and "
|
|
"physical volume paths");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (!argc & arg_count(cmd, removemissing_ARG)) {
|
|
log_error("Please give volume group name");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (argc == 1 && !arg_count(cmd, all_ARG)
|
|
&& !arg_count(cmd, removemissing_ARG)) {
|
|
log_error("Please enter physical volume paths or option -a");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (argc > 1 && arg_count(cmd, all_ARG)) {
|
|
log_error("Option -a and physical volume paths mutually "
|
|
"exclusive");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (argc > 1 && arg_count(cmd, removemissing_ARG)) {
|
|
log_error("Please only specify the volume group");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
vg_name = argv[0];
|
|
argv++;
|
|
argc--;
|
|
|
|
log_verbose("Finding volume group \"%s\"", vg_name);
|
|
if (!lock_vol(cmd, vg_name, LCK_VG_WRITE)) {
|
|
log_error("Can't get lock for %s", vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if ((!(vg = vg_read(cmd, vg_name, &consistent)) || !consistent) &&
|
|
!arg_count(cmd, removemissing_ARG)) {
|
|
log_error("Volume group \"%s\" doesn't exist", vg_name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (arg_count(cmd, removemissing_ARG)) {
|
|
if (vg && consistent) {
|
|
log_error("Volume group \"%s\" is already consistent",
|
|
vg_name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
init_partial(1);
|
|
consistent = 0;
|
|
if (!(vg = vg_read(cmd, vg_name, &consistent))) {
|
|
log_error("Volume group \"%s\" not found", vg_name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
if (!archive(vg)) {
|
|
init_partial(0);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!_make_vg_consistent(cmd, vg)) {
|
|
init_partial(0);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
init_partial(0);
|
|
|
|
vg->status &= ~PARTIAL_VG;
|
|
vg->status |= LVM_WRITE;
|
|
|
|
if (!vg_write(vg) || !vg_commit(vg)) {
|
|
log_error("Failed to write out a consistent VG for %s",
|
|
vg_name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
backup(vg);
|
|
|
|
log_print("Wrote out consistent volume group %s", vg_name);
|
|
|
|
} else {
|
|
if (vg->status & EXPORTED_VG) {
|
|
log_error("Volume group \"%s\" is exported", vg->name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!(vg->status & LVM_WRITE)) {
|
|
log_error("Volume group \"%s\" is read-only", vg_name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!(vg->status & RESIZEABLE_VG)) {
|
|
log_error("Volume group \"%s\" is not reducible",
|
|
vg_name);
|
|
unlock_vg(cmd, vg_name);
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
/* FIXME: Pass private struct through to all these functions */
|
|
/* and update in batch here? */
|
|
ret = process_each_pv(cmd, argc, argv, vg, NULL,
|
|
_vgreduce_single);
|
|
|
|
}
|
|
|
|
unlock_vg(cmd, vg_name);
|
|
|
|
return ret;
|
|
|
|
/******* FIXME
|
|
log_error ("no empty physical volumes found in volume group \"%s\"", vg_name);
|
|
|
|
log_verbose
|
|
("volume group \"%s\" will be reduced by %d physical volume%s",
|
|
vg_name, np, np > 1 ? "s" : "");
|
|
log_verbose ("reducing volume group \"%s\" by physical volume \"%s\"",
|
|
vg_name, pv_names[p]);
|
|
|
|
log_print
|
|
("volume group \"%s\" %ssuccessfully reduced by physical volume%s:",
|
|
vg_name, error > 0 ? "NOT " : "", p > 1 ? "s" : "");
|
|
log_print("%s", pv_this[p]->pv_name);
|
|
********/
|
|
|
|
}
|