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mirror of git://sourceware.org/git/lvm2.git synced 2024-12-23 21:35:29 +03:00
lvm2/tools/pvcreate.c
snitzer 282029eb45 Add --dataalignmentoffset to pvcreate to shift start of aligned data area
Adds pe_align_offset to 'struct physical_volume'; is initialized with
set_pe_align_offset().  After pe_start is established pe_align_offset is
added to it.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2009-07-30 17:45:28 +00:00

208 lines
5.8 KiB
C

/*
* Copyright (C) 2001-2004 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"
#include "metadata-exported.h"
/*
* Intial sanity checking of command-line arguments and fill in 'pp' fields.
*
* Input arguments:
* cmd, argc, argv
*
* Output arguments:
* pp: structure allocated by caller, fields written / validated here
*/
static int pvcreate_validate_params(struct cmd_context *cmd,
int argc, char **argv,
struct pvcreate_params *pp)
{
const char *uuid = NULL;
void *existing_pv;
struct volume_group *vg;
memset(pp, 0, sizeof(*pp));
if (!argc) {
log_error("Please enter a physical volume path");
return 0;
}
if (arg_count(cmd, restorefile_ARG) && !arg_count(cmd, uuidstr_ARG)) {
log_error("--uuid is required with --restorefile");
return 0;
}
if (arg_count(cmd, uuidstr_ARG) && argc != 1) {
log_error("Can only set uuid on one volume at once");
return 0;
}
if (arg_count(cmd, uuidstr_ARG)) {
uuid = arg_str_value(cmd, uuidstr_ARG, "");
if (!id_read_format(&pp->id, uuid))
return 0;
pp->idp = &pp->id;
}
if (arg_count(cmd, restorefile_ARG)) {
pp->restorefile = arg_str_value(cmd, restorefile_ARG, "");
/* The uuid won't already exist */
if (!(vg = backup_read_vg(cmd, NULL, pp->restorefile))) {
log_error("Unable to read volume group from %s",
pp->restorefile);
return 0;
}
if (!(existing_pv = find_pv_in_vg_by_uuid(vg, pp->idp))) {
log_error("Can't find uuid %s in backup file %s",
uuid, pp->restorefile);
return 0;
}
pp->pe_start = pv_pe_start(existing_pv);
pp->extent_size = pv_pe_size(existing_pv);
pp->extent_count = pv_pe_count(existing_pv);
vg_release(vg);
}
if (arg_count(cmd, yes_ARG) && !arg_count(cmd, force_ARG)) {
log_error("Option y can only be given with option f");
return 0;
}
pp->yes = arg_count(cmd, yes_ARG);
pp->force = arg_count(cmd, force_ARG);
if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) {
log_error("labelsector must be less than %lu",
LABEL_SCAN_SECTORS);
return 0;
} else {
pp->labelsector = arg_int64_value(cmd, labelsector_ARG,
DEFAULT_LABELSECTOR);
}
if (!(cmd->fmt->features & FMT_MDAS) &&
(arg_count(cmd, metadatacopies_ARG) ||
arg_count(cmd, metadatasize_ARG) ||
arg_count(cmd, dataalignment_ARG) ||
arg_count(cmd, dataalignmentoffset_ARG))) {
log_error("Metadata and data alignment parameters only "
"apply to text format.");
return 0;
}
if (arg_count(cmd, metadatacopies_ARG) &&
arg_int_value(cmd, metadatacopies_ARG, -1) > 2) {
log_error("Metadatacopies may only be 0, 1 or 2");
return 0;
}
if (arg_count(cmd, zero_ARG))
pp->zero = strcmp(arg_str_value(cmd, zero_ARG, "y"), "n");
else if (arg_count(cmd, restorefile_ARG) || arg_count(cmd, uuidstr_ARG))
pp->zero = 0;
else
pp->zero = 1;
if (arg_sign_value(cmd, physicalvolumesize_ARG, 0) == SIGN_MINUS) {
log_error("Physical volume size may not be negative");
return 0;
}
pp->size = arg_uint64_value(cmd, physicalvolumesize_ARG, UINT64_C(0));
if (arg_sign_value(cmd, dataalignment_ARG, 0) == SIGN_MINUS) {
log_error("Physical volume data alignment may not be negative");
return 0;
}
pp->data_alignment = arg_uint64_value(cmd, dataalignment_ARG, UINT64_C(0));
if (pp->data_alignment > ULONG_MAX) {
log_error("Physical volume data alignment is too big.");
return 0;
}
if (pp->data_alignment && pp->pe_start) {
if (pp->pe_start % pp->data_alignment)
log_warn("WARNING: Ignoring data alignment %" PRIu64
" incompatible with --restorefile value (%"
PRIu64").", pp->data_alignment, pp->pe_start);
pp->data_alignment = 0;
}
if (arg_sign_value(cmd, dataalignmentoffset_ARG, 0) == SIGN_MINUS) {
log_error("Physical volume data alignment offset may not be negative");
return 0;
}
pp->data_alignment_offset = arg_uint64_value(cmd, dataalignmentoffset_ARG, UINT64_C(0));
if (pp->data_alignment_offset > ULONG_MAX) {
log_error("Physical volume data alignment offset is too big.");
return 0;
}
if (pp->data_alignment_offset && pp->pe_start) {
log_warn("WARNING: Ignoring data alignment offset %" PRIu64
" incompatible with --restorefile value (%"
PRIu64").", pp->data_alignment_offset, pp->pe_start);
pp->data_alignment_offset = 0;
}
if (arg_sign_value(cmd, metadatasize_ARG, 0) == SIGN_MINUS) {
log_error("Metadata size may not be negative");
return 0;
}
pp->pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0));
if (!pp->pvmetadatasize)
pp->pvmetadatasize = find_config_tree_int(cmd,
"metadata/pvmetadatasize",
DEFAULT_PVMETADATASIZE);
pp->pvmetadatacopies = arg_int_value(cmd, metadatacopies_ARG, -1);
if (pp->pvmetadatacopies < 0)
pp->pvmetadatacopies = find_config_tree_int(cmd,
"metadata/pvmetadatacopies",
DEFAULT_PVMETADATACOPIES);
return 1;
}
int pvcreate(struct cmd_context *cmd, int argc, char **argv)
{
int i;
int ret = ECMD_PROCESSED;
struct pvcreate_params pp;
if (!pvcreate_validate_params(cmd, argc, argv, &pp)) {
return EINVALID_CMD_LINE;
}
for (i = 0; i < argc; i++) {
if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) {
log_error("Can't get lock for orphan PVs");
return ECMD_FAILED;
}
if (!pvcreate_single(cmd, argv[i], &pp))
ret = ECMD_FAILED;
unlock_vg(cmd, VG_ORPHANS);
if (sigint_caught())
return ret;
}
return ret;
}