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lvm2/tools/vgchange.c
Alasdair Kergon e95d828454 Add --maxphysicalvolumes to vgchange.
2006-08-16 14:41:42 +00:00

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/*
* 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 _register_lvs_in_vg(struct cmd_context *cmd,
struct volume_group *vg, int reg)
{
struct lv_list *lvl;
struct logical_volume *lv;
struct lvinfo info;
int lv_active;
int count = 0;
int r;
list_iterate_items(lvl, &vg->lvs) {
lv = lvl->lv;
if (!lv_info(cmd, lv, &info, 0))
lv_active = 0;
else
lv_active = info.exists;
/*
* FIXME: Need to consider all cases... PVMOVE, etc
*/
if ((lv->status & PVMOVE) || !lv_active)
continue;
r = register_dev_for_events(cmd, lv, reg);
if (r < 0) {
log_error("Failed to %s logical volume, %s",
(reg) ? "register" : "unregister",
lv->name);
continue;
}
if (r)
count++;
}
/*
* returns the number of monitored devices, not the number
* of _new_ monitored devices
*/
return count;
}
static int _activate_lvs_in_vg(struct cmd_context *cmd,
struct volume_group *vg, int activate)
{
struct lv_list *lvl;
struct logical_volume *lv;
const char *pvname;
int count = 0;
list_iterate_items(lvl, &vg->lvs) {
lv = lvl->lv;
/* Only request activation of snapshot origin devices */
if ((lv->status & SNAPSHOT) || lv_is_cow(lv))
continue;
/* Can't deactive a pvmove or log LV */
/* FIXME There needs to be a controlled way of doing this */
if (((activate == CHANGE_AN) || (activate == CHANGE_ALN)) &&
((lv->status & PVMOVE) || (lv->status & MIRROR_LOG)))
continue;
if (activate == CHANGE_AN) {
if (!deactivate_lv(cmd, lv))
continue;
} else if (activate == CHANGE_ALN) {
if (!deactivate_lv_local(cmd, lv))
continue;
} else if (lv_is_origin(lv) || (activate == CHANGE_AE)) {
if (!activate_lv_excl(cmd, lv))
continue;
} else if (activate == CHANGE_ALY) {
if (!activate_lv_local(cmd, lv))
continue;
} else if (!activate_lv(cmd, lv))
continue;
if ((lv->status & PVMOVE) &&
(pvname = get_pvmove_pvname_from_lv_mirr(lv))) {
log_verbose("Spawning background process for %s %s",
lv->name, pvname);
pvmove_poll(cmd, pvname, 1);
continue;
}
count++;
}
return count;
}
static int _vgchange_monitoring(struct cmd_context *cmd, struct volume_group *vg)
{
int active, monitored;
if ((active = lvs_in_vg_activated(vg))) {
monitored = _register_lvs_in_vg(cmd, vg, dmeventd_register_mode());
log_print("%d logical volume(s) in volume group "
"\"%s\" now %smonitored",
monitored, vg->name, (dmeventd_register_mode()) ? "" : "un");
}
return ECMD_PROCESSED;
}
static int _vgchange_available(struct cmd_context *cmd, struct volume_group *vg)
{
int lv_open, active, monitored;
int available;
int activate = 1;
available = arg_uint_value(cmd, available_ARG, 0);
if ((available == CHANGE_AN) || (available == CHANGE_ALN))
activate = 0;
/* FIXME: Force argument to deactivate them? */
if (!activate && (lv_open = lvs_in_vg_opened(vg))) {
log_error("Can't deactivate volume group \"%s\" with %d open "
"logical volume(s)", vg->name, lv_open);
return ECMD_FAILED;
}
if (activate && lockingfailed() && (vg->status & CLUSTERED)) {
log_error("Locking inactive: ignoring clustered "
"volume group %s", vg->name);
return ECMD_FAILED;
}
/* FIXME Move into library where clvmd can use it */
if (activate && !lockingfailed())
check_current_backup(vg);
if (activate && (active = lvs_in_vg_activated(vg))) {
log_verbose("%d logical volume(s) in volume group \"%s\" "
"already active", active, vg->name);
monitored = _register_lvs_in_vg(cmd, vg, dmeventd_register_mode());
log_verbose("%d existing logical volume(s) in volume "
"group \"%s\" now %smonitored",
monitored, vg->name,
dmeventd_register_mode() ? "" : "un");
}
if (activate && _activate_lvs_in_vg(cmd, vg, available))
log_verbose("Activated logical volumes in "
"volume group \"%s\"", vg->name);
if (!activate && _activate_lvs_in_vg(cmd, vg, available))
log_verbose("Deactivated logical volumes in "
"volume group \"%s\"", vg->name);
log_print("%d logical volume(s) in volume group \"%s\" now active",
lvs_in_vg_activated(vg), vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_alloc(struct cmd_context *cmd, struct volume_group *vg)
{
alloc_policy_t alloc;
alloc = arg_uint_value(cmd, alloc_ARG, ALLOC_NORMAL);
if (alloc == ALLOC_INHERIT) {
log_error("Volume Group allocation policy cannot inherit "
"from anything");
return EINVALID_CMD_LINE;
}
if (alloc == vg->alloc) {
log_error("Volume group allocation policy is already %s",
get_alloc_string(vg->alloc));
return ECMD_FAILED;
}
if (!archive(vg))
return ECMD_FAILED;
vg->alloc = alloc;
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_resizeable(struct cmd_context *cmd,
struct volume_group *vg)
{
int resizeable = !strcmp(arg_str_value(cmd, resizeable_ARG, "n"), "y");
if (resizeable && (vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" is already resizeable",
vg->name);
return ECMD_FAILED;
}
if (!resizeable && !(vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" is already not resizeable",
vg->name);
return ECMD_FAILED;
}
if (!archive(vg))
return ECMD_FAILED;
if (resizeable)
vg->status |= RESIZEABLE_VG;
else
vg->status &= ~RESIZEABLE_VG;
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_clustered(struct cmd_context *cmd,
struct volume_group *vg)
{
int clustered = !strcmp(arg_str_value(cmd, clustered_ARG, "n"), "y");
struct lv_list *lvl;
if (clustered && (vg->status & CLUSTERED)) {
log_error("Volume group \"%s\" is already clustered",
vg->name);
return ECMD_FAILED;
}
if (!clustered && !(vg->status & CLUSTERED)) {
log_error("Volume group \"%s\" is already not clustered",
vg->name);
return ECMD_FAILED;
}
if (clustered) {
list_iterate_items(lvl, &vg->lvs) {
if (lv_is_origin(lvl->lv) || lv_is_cow(lvl->lv)) {
log_error("Volume group %s contains snapshots "
"that are not yet supported.",
vg->name);
return ECMD_FAILED;
}
}
}
if (!archive(vg))
return ECMD_FAILED;
if (clustered)
vg->status |= CLUSTERED;
else
vg->status &= ~CLUSTERED;
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_logicalvolume(struct cmd_context *cmd,
struct volume_group *vg)
{
uint32_t max_lv = arg_uint_value(cmd, logicalvolume_ARG, 0);
if (!(vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" must be resizeable "
"to change MaxLogicalVolume", vg->name);
return ECMD_FAILED;
}
if (!(vg->fid->fmt->features & FMT_UNLIMITED_VOLS)) {
if (!max_lv)
max_lv = 255;
else if (max_lv > 255) {
log_error("MaxLogicalVolume limit is 255");
return ECMD_FAILED;
}
}
if (max_lv && max_lv < vg->lv_count) {
log_error("MaxLogicalVolume is less than the current number "
"%d of LVs for \"%s\"", vg->lv_count,
vg->name);
return ECMD_FAILED;
}
if (!archive(vg))
return ECMD_FAILED;
vg->max_lv = max_lv;
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_physicalvolumes(struct cmd_context *cmd,
struct volume_group *vg)
{
uint32_t max_pv = arg_uint_value(cmd, maxphysicalvolumes_ARG, 0);
if (!(vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" must be resizeable "
"to change MaxPhysicalVolumes", vg->name);
return ECMD_FAILED;
}
if (arg_sign_value(cmd, maxphysicalvolumes_ARG, 0) == SIGN_MINUS) {
log_error("MaxPhysicalVolumes may not be negative");
return EINVALID_CMD_LINE;
}
if (!(vg->fid->fmt->features & FMT_UNLIMITED_VOLS)) {
if (!max_pv)
max_pv = 255;
else if (max_pv > 255) {
log_error("MaxPhysicalVolume limit is 255");
return ECMD_FAILED;
}
}
if (max_pv && max_pv < vg->pv_count) {
log_error("MaxPhysicalVolumes is less than the current number "
"%d of PVs for \"%s\"", vg->pv_count,
vg->name);
return ECMD_FAILED;
}
if (!archive(vg))
return ECMD_FAILED;
vg->max_pv = max_pv;
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_pesize(struct cmd_context *cmd, struct volume_group *vg)
{
uint32_t extent_size;
if (!(vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" must be resizeable "
"to change PE size", vg->name);
return ECMD_FAILED;
}
if (arg_sign_value(cmd, physicalextentsize_ARG, 0) == SIGN_MINUS) {
log_error("Physical extent size may not be negative");
return EINVALID_CMD_LINE;
}
extent_size = arg_uint_value(cmd, physicalextentsize_ARG, 0) * 2;
if (!extent_size) {
log_error("Physical extent size may not be zero");
return EINVALID_CMD_LINE;
}
if (extent_size == vg->extent_size) {
log_error("Physical extent size of VG %s is already %s",
vg->name, display_size(cmd, (uint64_t) extent_size));
return ECMD_PROCESSED;
}
if (extent_size & (extent_size - 1)) {
log_error("Physical extent size must be a power of 2.");
return EINVALID_CMD_LINE;
}
if (extent_size > vg->extent_size) {
if ((uint64_t) vg->extent_size * vg->extent_count % extent_size) {
/* FIXME Adjust used PV sizes instead */
log_error("New extent size is not a perfect fit");
return EINVALID_CMD_LINE;
}
}
if (!archive(vg))
return ECMD_FAILED;
if (!vg_change_pesize(cmd, vg, extent_size)) {
stack;
return ECMD_FAILED;
}
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_tag(struct cmd_context *cmd, struct volume_group *vg,
int arg)
{
const char *tag;
if (!(tag = arg_str_value(cmd, arg, NULL))) {
log_error("Failed to get tag");
return ECMD_FAILED;
}
if (!(vg->fid->fmt->features & FMT_TAGS)) {
log_error("Volume group %s does not support tags", vg->name);
return ECMD_FAILED;
}
if (!archive(vg))
return ECMD_FAILED;
if ((arg == addtag_ARG)) {
if (!str_list_add(cmd->mem, &vg->tags, tag)) {
log_error("Failed to add tag %s to volume group %s",
tag, vg->name);
return ECMD_FAILED;
}
} else {
if (!str_list_del(&vg->tags, tag)) {
log_error("Failed to remove tag %s from volume group "
"%s", tag, vg->name);
return ECMD_FAILED;
}
}
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int _vgchange_uuid(struct cmd_context *cmd __attribute((unused)),
struct volume_group *vg)
{
struct lv_list *lvl;
if (lvs_in_vg_activated(vg)) {
log_error("Volume group has active logical volumes");
return ECMD_FAILED;
}
if (!archive(vg))
return ECMD_FAILED;
if (!id_create(&vg->id)) {
log_error("Failed to generate new random UUID for VG %s.",
vg->name);
return ECMD_FAILED;
}
list_iterate_items(lvl, &vg->lvs) {
memcpy(&lvl->lv->lvid, &vg->id, sizeof(vg->id));
}
if (!vg_write(vg) || !vg_commit(vg))
return ECMD_FAILED;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return ECMD_PROCESSED;
}
static int vgchange_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
void *handle __attribute((unused)))
{
int r = ECMD_FAILED;
if (!vg) {
log_error("Unable to find volume group \"%s\"", vg_name);
return ECMD_FAILED;
}
if (!consistent) {
unlock_vg(cmd, vg_name);
dev_close_all();
log_error("Volume group \"%s\" inconsistent", vg_name);
if (!(vg = recover_vg(cmd, vg_name, LCK_VG_WRITE)))
return ECMD_FAILED;
}
if (!(vg->status & LVM_WRITE) && !arg_count(cmd, available_ARG)) {
log_error("Volume group \"%s\" is read-only", vg->name);
return ECMD_FAILED;
}
if (vg->status & EXPORTED_VG) {
log_error("Volume group \"%s\" is exported", vg_name);
return ECMD_FAILED;
}
init_dmeventd_register(arg_int_value(cmd, monitor_ARG, DEFAULT_DMEVENTD_MONITOR));
if (arg_count(cmd, available_ARG))
r = _vgchange_available(cmd, vg);
else if (arg_count(cmd, monitor_ARG))
r = _vgchange_monitoring(cmd, vg);
else if (arg_count(cmd, resizeable_ARG))
r = _vgchange_resizeable(cmd, vg);
else if (arg_count(cmd, logicalvolume_ARG))
r = _vgchange_logicalvolume(cmd, vg);
else if (arg_count(cmd, maxphysicalvolumes_ARG))
r = _vgchange_physicalvolumes(cmd, vg);
else if (arg_count(cmd, addtag_ARG))
r = _vgchange_tag(cmd, vg, addtag_ARG);
else if (arg_count(cmd, deltag_ARG))
r = _vgchange_tag(cmd, vg, deltag_ARG);
else if (arg_count(cmd, physicalextentsize_ARG))
r = _vgchange_pesize(cmd, vg);
else if (arg_count(cmd, uuid_ARG))
r = _vgchange_uuid(cmd, vg);
else if (arg_count(cmd, alloc_ARG))
r = _vgchange_alloc(cmd, vg);
else if (arg_count(cmd, clustered_ARG))
r = _vgchange_clustered(cmd, vg);
return r;
}
int vgchange(struct cmd_context *cmd, int argc, char **argv)
{
if (!
(arg_count(cmd, available_ARG) + arg_count(cmd, logicalvolume_ARG) +
arg_count(cmd, maxphysicalvolumes_ARG) +
arg_count(cmd, resizeable_ARG) + arg_count(cmd, deltag_ARG) +
arg_count(cmd, addtag_ARG) + arg_count(cmd, uuid_ARG) +
arg_count(cmd, physicalextentsize_ARG) +
arg_count(cmd, clustered_ARG) + arg_count(cmd, alloc_ARG) +
arg_count(cmd, monitor_ARG))) {
log_error("One of -a, -c, -l, -p, -s, -x, --uuid, --alloc, "
"--addtag or --deltag required");
return EINVALID_CMD_LINE;
}
/* FIXME Cope with several changes at once! */
if (arg_count(cmd, available_ARG) + arg_count(cmd, logicalvolume_ARG) +
arg_count(cmd, maxphysicalvolumes_ARG) +
arg_count(cmd, resizeable_ARG) + arg_count(cmd, deltag_ARG) +
arg_count(cmd, addtag_ARG) + arg_count(cmd, alloc_ARG) +
arg_count(cmd, uuid_ARG) + arg_count(cmd, clustered_ARG) +
arg_count(cmd, physicalextentsize_ARG) > 1) {
log_error("Only one of -a, -c, -l, -p, -s, -x, --uuid, "
"--alloc, --addtag or --deltag allowed");
return EINVALID_CMD_LINE;
}
if (arg_count(cmd, ignorelockingfailure_ARG) &&
!arg_count(cmd, available_ARG)) {
log_error("--ignorelockingfailure only available with -a");
return EINVALID_CMD_LINE;
}
if (arg_count(cmd, available_ARG) == 1
&& arg_count(cmd, autobackup_ARG)) {
log_error("-A option not necessary with -a option");
return EINVALID_CMD_LINE;
}
return process_each_vg(cmd, argc, argv,
(arg_count(cmd, available_ARG)) ?
LCK_VG_READ : LCK_VG_WRITE, 0, NULL,
&vgchange_single);
}
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