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lvm2/tools/pvck.c
David Teigland 228ed56455 pvck: allow checking at user specified offsets
with the --labelsector option.  We probably don't
need all this code to support any value for this
option; it's unclear how, when, why it would be
used.
2018-05-11 11:23:51 -05:00

82 lines
2.0 KiB
C

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tools.h"
int pvck(struct cmd_context *cmd, int argc, char **argv)
{
struct dm_list devs;
struct device_list *devl;
struct device *dev;
const char *pv_name;
uint64_t labelsector;
int i;
int ret_max = ECMD_PROCESSED;
labelsector = arg_uint64_value(cmd, labelsector_ARG, UINT64_C(0));
dm_list_init(&devs);
for (i = 0; i < argc; i++) {
dm_unescape_colons_and_at_signs(argv[i], NULL, NULL);
pv_name = argv[i];
dev = dev_cache_get(pv_name, cmd->filter);
if (!dev) {
log_error("Device %s %s.", pv_name, dev_cache_filtered_reason(pv_name));
continue;
}
if (!(devl = dm_zalloc(sizeof(*devl))))
continue;
devl->dev = dev;
dm_list_add(&devs, &devl->list);
}
label_scan_setup_bcache();
label_scan_devs(cmd, cmd->filter, &devs);
dm_list_iterate_items(devl, &devs) {
/*
* The scan above will populate lvmcache with any info from the
* standard locations at the start of the device. Now populate
* lvmcache with any info from non-standard offsets.
*
* FIXME: is it possible for a real lvm label sector to be
* anywhere other than the first four sectors of the disk?
* If not, drop the code in label_read_sector/find_lvm_header
* that supports searching at any sector.
*/
if (labelsector) {
if (!label_read_sector(devl->dev, labelsector)) {
stack;
ret_max = ECMD_FAILED;
continue;
}
}
if (!pv_analyze(cmd, devl->dev, labelsector)) {
stack;
ret_max = ECMD_FAILED;
}
}
return ret_max;
}