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git://sourceware.org/git/lvm2.git
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132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/*
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* Copyright (C) 2001 Sistina Software
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*
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* LVM is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* LVM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LVM; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include "tools.h"
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int lvrename(int argc, char **argv)
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{
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int maxlen;
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char *lv_name_old, *lv_name_new;
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char *vg_name, *vg_name_new;
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char *st;
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struct volume_group *vg;
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struct logical_volume *lv;
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struct list *lvh;
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if (argc != 2) {
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log_error("Old and new logical volume required");
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return EINVALID_CMD_LINE;
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}
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lv_name_old = argv[0];
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lv_name_new = argv[1];
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if (!(vg_name = extract_vgname(fid, lv_name_old))) {
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log_error("Please provide a volume group name");
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return EINVALID_CMD_LINE;
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}
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if (strchr(lv_name_new, '/') &&
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(vg_name_new = extract_vgname(fid, lv_name_new)) &&
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strcmp(vg_name, vg_name_new)) {
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log_error("Logical volume names must "
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"have the same volume group (%s or %s)",
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vg_name, vg_name_new);
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return EINVALID_CMD_LINE;
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}
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if ((st = strrchr(lv_name_old, '/')))
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lv_name_old = st + 1;
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if ((st = strrchr(lv_name_new, '/')))
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lv_name_new = st + 1;
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/* Check sanity of new name */
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maxlen = NAME_LEN - strlen(vg_name) - strlen(fid->cmd->dev_dir) - 3;
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if (strlen(lv_name_new) > maxlen) {
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log_error("New logical volume path exceeds maximum length "
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"of %d!", maxlen);
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return ECMD_FAILED;
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}
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if (!*lv_name_new) {
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log_error("New logical volume name may not be blank");
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return ECMD_FAILED;
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}
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if (!is_valid_chars(lv_name_new)) {
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log_error("New logical volume name %s has invalid characters",
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lv_name_new);
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return EINVALID_CMD_LINE;
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}
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if (!strcmp(lv_name_old, lv_name_new)) {
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log_error("Old and new logical volume names must differ");
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return EINVALID_CMD_LINE;
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}
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log_verbose("Checking for existing volume group %s", vg_name);
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if (!(vg = fid->ops->vg_read(fid, vg_name))) {
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log_error("Volume group %s doesn't exist", vg_name);
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return ECMD_FAILED;
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}
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if (!(vg->status & ACTIVE)) {
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log_error("Volume group %s must be active before changing a "
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"logical volume", vg_name);
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return ECMD_FAILED;
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}
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if ((lvh = find_lv_in_vg(vg, lv_name_new))) {
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log_error("Logical volume %s already exists in "
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"volume group %s", lv_name_new, vg_name);
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return ECMD_FAILED;
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}
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if (!(lvh = find_lv_in_vg(vg, lv_name_old))) {
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log_error("Existing logical volume %s not found in "
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"volume group %s", lv_name_old, vg_name);
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return ECMD_FAILED;
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}
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lv = &list_item(lvh, struct lv_list)->lv;
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if (!(lv->name = pool_strdup(fid->cmd->mem, lv_name_new))) {
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log_error("Failed to allocate space for new name");
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return ECMD_FAILED;
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}
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/* store it on disks */
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log_verbose("Writing out updated volume group");
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if (!(fid->ops->vg_write(fid, vg))) {
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return ECMD_FAILED;
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}
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/* FIXME Update symlink. lv_reactivate? */
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/* FIXME backup */
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log_print("Renamed %s to %s in volume group %s%s",
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lv_name_old, lv_name_new, fid->cmd->dev_dir, vg_name);
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return 0;
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}
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