/*
 * Copyright (C) 2001  Sistina Software
 *
 * vgremove 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.
 *
 * vgremove 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 vgremove_single(struct cmd_context *cmd, const char *vg_name,
			   struct volume_group *vg, int consistent,
			   void *handle)
{
	struct physical_volume *pv;
	struct list *pvh;
	int ret = 0;

	if (!vg || !consistent) {
		log_error("Volume group \"%s\" doesn't exist", vg_name);
		return ECMD_FAILED;
	}

	if (vg->status & EXPORTED_VG) {
		log_error("Volume group \"%s\" is exported", vg->name);
		return ECMD_FAILED;
	}

	if (vg->status & PARTIAL_VG) {
		log_error("Cannot remove partial volume group \"%s\"",
			  vg->name);
		return ECMD_FAILED;
	}

	if (vg->lv_count) {
		log_error("Volume group \"%s\" still contains %d "
			  "logical volume(s)", vg_name, vg->lv_count);
		return ECMD_FAILED;
	}

	if (!archive(vg))
		return ECMD_FAILED;

	if (!vg_remove(vg)) {
		log_error("vg_remove %s failed", vg_name);
		return ECMD_FAILED;
	}

	/* init physical volumes */
	list_iterate(pvh, &vg->pvs) {
		pv = list_item(pvh, struct pv_list)->pv;
		log_verbose("Removing physical volume \"%s\" from "
			    "volume group \"%s\"", dev_name(pv->dev), vg_name);
		pv->vg_name = ORPHAN;
		/* FIXME Write to same sector label was read from */
		if (!pv_write(cmd, pv, NULL, INT64_C(-1))) {
			log_error("Failed to remove physical volume \"%s\""
				  " from volume group \"%s\"",
				  dev_name(pv->dev), vg_name);
			ret = ECMD_FAILED;
		}
	}

	backup_remove(vg_name);

	if (!ret)
		log_print("Volume group \"%s\" successfully removed", vg_name);
	else
		log_error("Volume group \"%s\" not properly removed", vg_name);

	return ret;
}

int vgremove(struct cmd_context *cmd, int argc, char **argv)
{
	int ret;

	if (!lock_vol(cmd, "", LCK_VG_WRITE)) {
		log_error("Can't get lock for orphan PVs");
		return ECMD_FAILED;
	}

	ret = process_each_vg(cmd, argc, argv,
			      LCK_VG | LCK_WRITE | LCK_NONBLOCK, 1, NULL,
			      &vgremove_single);

	unlock_vg(cmd, "");

	return ret;
}
