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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"
#include "lvm-types.h"
int lvrename(struct cmd_context *cmd, int argc, char **argv)
{
size_t maxlen;
char *lv_name_old, *lv_name_new;
const char *vg_name, *vg_name_new, *vg_name_old;
char *st;
int consistent = 1;
struct volume_group *vg;
struct logical_volume *lv;
struct lv_list *lvl;
if (argc == 3) {
vg_name = argv[0];
if (!strncmp(vg_name, cmd->dev_dir, strlen(cmd->dev_dir)))
vg_name += strlen(cmd->dev_dir);
lv_name_old = argv[1];
lv_name_new = argv[2];
if (strchr(lv_name_old, '/') &&
(vg_name_old = extract_vgname(cmd, lv_name_old)) &&
strcmp(vg_name_old, vg_name)) {
log_error("Please use a single volume group name "
"(\"%s\" or \"%s\")", vg_name, vg_name_old);
return EINVALID_CMD_LINE;
}
} else if (argc == 2) {
lv_name_old = argv[0];
lv_name_new = argv[1];
vg_name = extract_vgname(cmd, lv_name_old);
} else {
log_error("Old and new logical volume names required");
return EINVALID_CMD_LINE;
}
if (!validate_vgname(vg_name)) {
log_error("Please provide a valid volume group name");
return EINVALID_CMD_LINE;
}
if (strchr(lv_name_new, '/') &&
(vg_name_new = extract_vgname(cmd, lv_name_new)) &&
strcmp(vg_name, vg_name_new)) {
log_error("Logical volume names must "
"have the same volume group (\"%s\" or \"%s\")",
vg_name, vg_name_new);
return EINVALID_CMD_LINE;
}
if ((st = strrchr(lv_name_old, '/')))
lv_name_old = st + 1;
if ((st = strrchr(lv_name_new, '/')))
lv_name_new = st + 1;
/* Check sanity of new name */
maxlen = NAME_LEN - strlen(vg_name) - strlen(cmd->dev_dir) - 3;
if (strlen(lv_name_new) > maxlen) {
log_error("New logical volume path exceeds maximum length "
"of %" PRIsize_t "!", maxlen);
return ECMD_FAILED;
}
if (!*lv_name_new) {
log_error("New logical volume name may not be blank");
return ECMD_FAILED;
}
/* FIXME Remove this restriction eventually */
if (!strncmp(lv_name_new, "snapshot", 8)) {
log_error("Names starting \"snapshot\" are reserved. "
"Please choose a different LV name.");
return ECMD_FAILED;
}
if (!validate_vgname(lv_name_new)) {
log_error
("New logical volume name \"%s\" has invalid characters",
lv_name_new);
return EINVALID_CMD_LINE;
}
if (!strcmp(lv_name_old, lv_name_new)) {
log_error("Old and new logical volume names must differ");
return EINVALID_CMD_LINE;
}
log_verbose("Checking for existing 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))) {
log_error("Volume group \"%s\" doesn't exist", vg_name);
goto error;
}
if (vg->status & EXPORTED_VG) {
log_error("Volume group \"%s\" is exported", vg->name);
goto error;
}
if (!(vg->status & LVM_WRITE)) {
log_error("Volume group \"%s\" is read-only", vg_name);
goto error;
}
if (find_lv_in_vg(vg, lv_name_new)) {
log_error("Logical volume \"%s\" already exists in "
"volume group \"%s\"", lv_name_new, vg_name);
goto error;
}
if (!(lvl = find_lv_in_vg(vg, lv_name_old))) {
log_error("Existing logical volume \"%s\" not found in "
"volume group \"%s\"", lv_name_old, vg_name);
goto error;
}
lv = lvl->lv;
if (!archive(lv->vg))
goto error;
if (!lock_vol(cmd, lv->lvid.s, LCK_LV_SUSPEND | LCK_HOLD |
LCK_NONBLOCK))
goto error;
if (!(lv->name = pool_strdup(cmd->mem, lv_name_new))) {
log_error("Failed to allocate space for new name");
goto lverror;
}
log_verbose("Writing out updated volume group");
if (!vg_write(vg))
goto lverror;
unlock_lv(cmd, lv->lvid.s);
backup(lv->vg);
unlock_vg(cmd, vg_name);
log_print("Renamed \"%s\" to \"%s\" in volume group \"%s\"",
lv_name_old, lv_name_new, vg_name);
return 0;
lverror:
unlock_lv(cmd, lv->lvid.s);
error:
unlock_vg(cmd, vg_name);
return ECMD_FAILED;
}
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