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/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tools.h"
const char _really_wipe[] =
"Really WIPE LABELS from physical volume \"%s\" of volume group \"%s\" [y/n]? ";
/*
* Decide whether it is "safe" to wipe the labels on this device.
* 0 indicates we may not.
*/
static int pvremove_check(struct cmd_context *cmd, const char *name)
{
struct physical_volume *pv;
struct dm_list mdas;
dm_list_init(&mdas);
/* FIXME Check partition type is LVM unless --force is given */
/* Is there a pv here already? */
/* If not, this is an error unless you used -f. */
if (!(pv = pv_read(cmd, name, &mdas, NULL, 1, 0))) {
if (arg_count(cmd, force_ARG))
return 1;
log_error("Physical Volume %s not found", name);
return 0;
}
/*
* If a PV has no MDAs it may appear to be an
* orphan until the metadata is read off
* another PV in the same VG. Detecting this
* means checking every VG by scanning every
* PV on the system.
*/
if (is_orphan(pv) && !dm_list_size(&mdas)) {
if (!scan_vgs_for_pvs(cmd, 0)) {
log_error("Rescan for PVs without metadata areas "
"failed.");
return 0;
}
if (!(pv = pv_read(cmd, name, NULL, NULL, 1, 0))) {
log_error("Failed to read physical volume %s", name);
return 0;
}
}
/* orphan ? */
if (is_orphan(pv))
return 1;
/* Allow partial & exported VGs to be destroyed. */
/* we must have -ff to overwrite a non orphan */
if (arg_count(cmd, force_ARG) < 2) {
log_error("Can't pvremove physical volume \"%s\" of "
"volume group \"%s\" without -ff", name, pv_vg_name(pv));
return 0;
}
/* prompt */
if (!arg_count(cmd, yes_ARG) &&
yes_no_prompt(_really_wipe, name, pv_vg_name(pv)) == 'n') {
log_error("%s: physical volume label not removed", name);
return 0;
}
if (arg_count(cmd, force_ARG)) {
log_warn("WARNING: Wiping physical volume label from "
"%s%s%s%s", name,
!is_orphan(pv) ? " of volume group \"" : "",
!is_orphan(pv) ? pv_vg_name(pv) : "",
!is_orphan(pv) ? "\"" : "");
}
return 1;
}
static int pvremove_single(struct cmd_context *cmd, const char *pv_name,
void *handle __attribute__((unused)))
{
struct device *dev;
int ret = ECMD_FAILED;
if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) {
log_error("Can't get lock for orphan PVs");
return ECMD_FAILED;
}
if (!pvremove_check(cmd, pv_name))
goto error;
if (!(dev = dev_cache_get(pv_name, cmd->filter))) {
log_error("%s: Couldn't find device. Check your filters?",
pv_name);
goto error;
}
if (!dev_test_excl(dev)) {
/* FIXME Detect whether device-mapper is still using the device */
log_error("Can't open %s exclusively - not removing. "
"Mounted filesystem?", dev_name(dev));
goto error;
}
/* Wipe existing label(s) */
if (!label_remove(dev)) {
log_error("Failed to wipe existing label(s) on %s", pv_name);
goto error;
}
log_print("Labels on physical volume \"%s\" successfully wiped",
pv_name);
ret = ECMD_PROCESSED;
error:
unlock_vg(cmd, VG_ORPHANS);
return ret;
}
int pvremove(struct cmd_context *cmd, int argc, char **argv)
{
int i, r;
int ret = ECMD_PROCESSED;
if (!argc) {
log_error("Please enter a physical volume path");
return EINVALID_CMD_LINE;
}
for (i = 0; i < argc; i++) {
unescape_colons_and_at_signs(argv[i], NULL, NULL);
r = pvremove_single(cmd, argv[i], NULL);
if (r > ret)
ret = r;
}
return ret;
}
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