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/*
* Copyright (C) 2001 Sistina Software
*
* LVM is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LVM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LVM; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include "tools.h"
static int vgchange_single(struct cmd_context *cmd, const char *vg_name);
void vgchange_available(struct cmd_context *cmd, struct volume_group *vg);
void vgchange_resizeable(struct cmd_context *cmd, struct volume_group *vg);
void vgchange_logicalvolume(struct cmd_context *cmd, struct volume_group *vg);
static int _activate_lvs_in_vg(struct cmd_context *cmd,
struct volume_group *vg, int lock)
{
struct list *lvh;
struct logical_volume *lv;
int count = 0;
list_iterate(lvh, &vg->lvs) {
lv = list_item(lvh, struct lv_list)->lv;
/* Only request activatation of snapshot origin devices */
if (lv_is_cow(lv))
continue;
if (!lock_vol(cmd, lv->lvid.s, lock | LCK_NONBLOCK))
continue;
count++;
}
return count;
}
int vgchange(struct cmd_context *cmd, int argc, char **argv)
{
if (!
(arg_count(cmd, available_ARG) + arg_count(cmd, logicalvolume_ARG) +
arg_count(cmd, resizeable_ARG))) {
log_error("One of -a, -l or -x options required");
return EINVALID_CMD_LINE;
}
if (arg_count(cmd, available_ARG) + arg_count(cmd, logicalvolume_ARG) +
arg_count(cmd, resizeable_ARG) > 1) {
log_error("Only one of -a, -l or -x options 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, &vgchange_single);
}
static int vgchange_single(struct cmd_context *cmd, const char *vg_name)
{
struct volume_group *vg;
if (!(vg = vg_read(cmd, vg_name))) {
log_error("Unable to find volume group \"%s\"", vg_name);
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;
}
if (arg_count(cmd, available_ARG))
vgchange_available(cmd, vg);
if (arg_count(cmd, resizeable_ARG))
vgchange_resizeable(cmd, vg);
if (arg_count(cmd, logicalvolume_ARG))
vgchange_logicalvolume(cmd, vg);
return 0;
}
void vgchange_available(struct cmd_context *cmd, struct volume_group *vg)
{
int lv_open, active;
int available = !strcmp(arg_str_value(cmd, available_ARG, "n"), "y");
/* FIXME: Force argument to deactivate them? */
if (!available && (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;
}
if (available && (active = lvs_in_vg_activated(vg)))
log_verbose("%d logical volume(s) in volume group \"%s\" "
"already active", active, vg->name);
if (available && _activate_lvs_in_vg(cmd, vg, LCK_LV_ACTIVATE))
log_verbose("Activated logical volumes in "
"volume group \"%s\"", vg->name);
if (!available && _activate_lvs_in_vg(cmd, vg, LCK_LV_DEACTIVATE))
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;
}
void 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;
}
if (!resizeable && !(vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" is already not resizeable",
vg->name);
return;
}
if (!archive(vg))
return;
if (resizeable)
vg->status |= RESIZEABLE_VG;
else
vg->status &= ~RESIZEABLE_VG;
if (!vg_write(vg))
return;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return;
}
void vgchange_logicalvolume(struct cmd_context *cmd, struct volume_group *vg)
{
int max_lv = arg_int_value(cmd, logicalvolume_ARG, 0);
if (!(vg->status & RESIZEABLE_VG)) {
log_error("Volume group \"%s\" must be resizeable "
"to change MaxLogicalVolume", vg->name);
return;
}
if (max_lv < vg->lv_count) {
log_error("MaxLogicalVolume is less than the current number "
"%d of logical volume(s) for \"%s\"", vg->lv_count,
vg->name);
return;
}
if (!archive(vg))
return;
vg->max_lv = max_lv;
if (!vg_write(vg))
return;
backup(vg);
log_print("Volume group \"%s\" successfully changed", vg->name);
return;
}
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