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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"
int vgrename(struct cmd_context *cmd, int argc, char **argv)
{
char *dev_dir;
unsigned int length;
int consistent = 1;
char *vg_name_old, *vg_name_new;
char old_path[NAME_LEN], new_path[NAME_LEN];
struct volume_group *vg_old, *vg_new;
if (argc != 2) {
log_error("Old and new volume group names need specifying");
return EINVALID_CMD_LINE;
}
vg_name_old = argv[0];
vg_name_new = argv[1];
dev_dir = cmd->dev_dir;
length = strlen(dev_dir);
/* If present, strip dev_dir */
if (!strncmp(vg_name_old, dev_dir, length))
vg_name_old += length;
if (!strncmp(vg_name_new, dev_dir, length))
vg_name_new += length;
/* Check sanity of new name */
if (strlen(vg_name_new) > NAME_LEN - length - 2) {
log_error("New volume group path exceeds maximum length "
"of %d!", NAME_LEN - length - 2);
return ECMD_FAILED;
}
if (!validate_vgname(vg_name_new)) {
log_error("New volume group name \"%s\" has invalid characters",
vg_name_new);
return ECMD_FAILED;
}
if (!strcmp(vg_name_old, vg_name_new)) {
log_error("Old and new volume group names must differ");
return ECMD_FAILED;
}
log_verbose("Checking for existing volume group \"%s\"", vg_name_old);
if (!lock_vol(cmd, vg_name_old, LCK_VG_WRITE)) {
log_error("Can't get lock for %s", vg_name_old);
return ECMD_FAILED;
}
if (!(vg_old = vg_read(cmd, vg_name_old, &consistent)) || !consistent) {
log_error("Volume group \"%s\" doesn't exist", vg_name_old);
unlock_vg(cmd, vg_name_old);
return ECMD_FAILED;
}
if (vg_old->status & EXPORTED_VG) {
unlock_vg(cmd, vg_name_old);
log_error("Volume group \"%s\" is exported", vg_old->name);
return ECMD_FAILED;
}
if (!(vg_old->status & LVM_WRITE)) {
unlock_vg(cmd, vg_name_old);
log_error("Volume group \"%s\" is read-only", vg_old->name);
return ECMD_FAILED;
}
if (lvs_in_vg_activated(vg_old)) {
log_error("Volume group \"%s\" still has active LVs",
vg_name_old);
/***** FIXME Handle this with multiple LV renames!
if (!force_ARG) {
log_error("Use -f to force the rename");
unlock_vg(cmd, vg_name_old);
return ECMD_FAILED;
}
*****/
}
log_verbose("Checking for new volume group \"%s\"", vg_name_new);
if (!lock_vol(cmd, vg_name_new, LCK_VG_WRITE | LCK_NONBLOCK)) {
unlock_vg(cmd, vg_name_old);
log_error("Can't get lock for %s", vg_name_new);
return ECMD_FAILED;
}
consistent = 0;
if ((vg_new = vg_read(cmd, vg_name_new, &consistent))) {
log_error("New volume group \"%s\" already exists",
vg_name_new);
goto error;
}
if (!archive(vg_old))
goto error;
/* Change the volume group name */
vg_rename(cmd, vg_old, vg_name_new);
sprintf(old_path, "%s%s", dev_dir, vg_name_old);
sprintf(new_path, "%s%s", dev_dir, vg_name_new);
if (dir_exists(old_path)) {
log_verbose("Renaming \"%s\" to \"%s\"", old_path, new_path);
if (test_mode())
log_verbose("Test mode: Skipping rename.");
else if (rename(old_path, new_path)) {
log_error("Renaming \"%s\" to \"%s\" failed: %s",
old_path, new_path, strerror(errno));
goto error;
}
}
/* store it on disks */
log_verbose("Writing out updated volume group");
if (!vg_write(vg_old)) {
goto error;
}
/******* FIXME Rename any active LVs! *****/
backup(vg_old);
unlock_vg(cmd, vg_name_new);
unlock_vg(cmd, vg_name_old);
log_print("Volume group \"%s\" successfully renamed to \"%s\"",
vg_name_old, vg_name_new);
return 0;
error:
unlock_vg(cmd, vg_name_new);
unlock_vg(cmd, vg_name_old);
return ECMD_FAILED;
}
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