mirror of
git://sourceware.org/git/lvm2.git
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314 lines
8.4 KiB
C
314 lines
8.4 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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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 this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "tools.h"
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struct pvcreate_params {
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int zero;
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};
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const char _really_init[] =
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"Really INITIALIZE physical volume \"%s\" of volume group \"%s\" [y/n]? ";
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/*
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* See if we may pvcreate on this device.
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* 0 indicates we may not.
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*/
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static int pvcreate_check(struct cmd_context *cmd, const char *name)
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{
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struct physical_volume *pv;
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struct device *dev;
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uint64_t md_superblock;
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/* is the partition type set correctly ? */
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if ((arg_count(cmd, force_ARG) < 1) && !is_lvm_partition(name)) {
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log_error("%s: Not LVM partition type: use -f to override",
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name);
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return 0;
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}
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/* Is there a pv here already? */
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/* FIXME Use partial mode here? */
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pv = pv_read(cmd, name, NULL, NULL, 0);
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/* Allow partial & exported VGs to be destroyed. */
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/* We must have -ff to overwrite a non orphan */
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if (pv && pv->vg_name[0] && arg_count(cmd, force_ARG) != 2) {
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log_error("Can't initialize physical volume \"%s\" of "
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"volume group \"%s\" without -ff", name, pv->vg_name);
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return 0;
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}
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/* prompt */
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if (pv && pv->vg_name[0] && !arg_count(cmd, yes_ARG) &&
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yes_no_prompt(_really_init, name, pv->vg_name) == 'n') {
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log_print("%s: physical volume not initialized", name);
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return 0;
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}
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dev = dev_cache_get(name, cmd->filter);
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/* Is there an md superblock here? */
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if (!dev && md_filtering()) {
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unlock_vg(cmd, ORPHAN);
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persistent_filter_wipe(cmd->filter);
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lvmcache_destroy();
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init_md_filtering(0);
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if (!lock_vol(cmd, ORPHAN, LCK_VG_WRITE)) {
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log_error("Can't get lock for orphan PVs");
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init_md_filtering(1);
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return 0;
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}
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dev = dev_cache_get(name, cmd->filter);
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init_md_filtering(1);
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}
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if (!dev) {
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log_error("Device %s not found.", name);
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return 0;
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}
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if (!dev_test_excl(dev)) {
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log_error("Can't open %s exclusively. Mounted filesystem?",
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name);
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return 0;
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}
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/* Wipe superblock? */
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if (dev_is_md(dev, &md_superblock) &&
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((!arg_count(cmd, uuidstr_ARG) &&
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!arg_count(cmd, restorefile_ARG)) ||
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arg_count(cmd, yes_ARG) ||
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(yes_no_prompt("Software RAID md superblock "
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"detected on %s. Wipe it? [y/n] ", name) == 'y'))) {
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log_print("Wiping software RAID md superblock on %s", name);
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if (!dev_zero(dev, md_superblock, 4)) {
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log_error("Failed to wipe RAID md superblock on %s",
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name);
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return 0;
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}
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}
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if (pv && pv->vg_name[0] && arg_count(cmd, force_ARG)) {
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log_print("WARNING: Forcing physical volume creation on "
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"%s%s%s%s", name,
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pv->vg_name[0] ? " of volume group \"" : "",
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pv->vg_name[0] ? pv->vg_name : "",
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pv->vg_name[0] ? "\"" : "");
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}
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return 1;
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}
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static int pvcreate_single(struct cmd_context *cmd, const char *pv_name,
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void *handle)
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{
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struct pvcreate_params *pp = (struct pvcreate_params *) handle;
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struct physical_volume *pv, *existing_pv;
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struct id id, *idp = NULL;
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const char *uuid = NULL;
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uint64_t size = 0;
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struct device *dev;
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struct list mdas;
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int pvmetadatacopies;
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uint64_t pvmetadatasize;
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struct volume_group *vg;
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const char *restorefile;
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uint64_t pe_start = 0;
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uint32_t extent_count = 0, extent_size = 0;
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if (arg_count(cmd, uuidstr_ARG)) {
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uuid = arg_str_value(cmd, uuidstr_ARG, "");
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if (!id_read_format(&id, uuid))
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return EINVALID_CMD_LINE;
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if ((dev = device_from_pvid(cmd, &id)) &&
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(dev != dev_cache_get(pv_name, cmd->filter))) {
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log_error("uuid %s already in use on \"%s\"", uuid,
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dev_name(dev));
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return ECMD_FAILED;
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}
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idp = &id;
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}
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if (arg_count(cmd, restorefile_ARG)) {
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restorefile = arg_str_value(cmd, restorefile_ARG, "");
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/* The uuid won't already exist */
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init_partial(1);
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if (!(vg = backup_read_vg(cmd, NULL, restorefile))) {
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log_error("Unable to read volume group from %s",
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restorefile);
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return ECMD_FAILED;
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}
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init_partial(0);
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if (!(existing_pv = find_pv_in_vg_by_uuid(vg, idp))) {
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log_error("Can't find uuid %s in backup file %s",
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uuid, restorefile);
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return ECMD_FAILED;
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}
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pe_start = existing_pv->pe_start;
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extent_size = existing_pv->pe_size;
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extent_count = existing_pv->pe_count;
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}
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if (!lock_vol(cmd, ORPHAN, LCK_VG_WRITE)) {
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log_error("Can't get lock for orphan PVs");
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return ECMD_FAILED;
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}
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if (!pvcreate_check(cmd, pv_name))
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goto error;
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if (arg_sign_value(cmd, physicalvolumesize_ARG, 0) == SIGN_MINUS) {
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log_error("Physical volume size may not be negative");
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goto error;
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}
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size = arg_uint64_value(cmd, physicalvolumesize_ARG, UINT64_C(0)) * 2;
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if (arg_sign_value(cmd, metadatasize_ARG, 0) == SIGN_MINUS) {
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log_error("Metadata size may not be negative");
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goto error;
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}
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pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0))
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* 2;
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if (!pvmetadatasize)
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pvmetadatasize = find_config_int(cmd->cft->root,
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"metadata/pvmetadatasize",
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DEFAULT_PVMETADATASIZE);
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pvmetadatacopies = arg_int_value(cmd, metadatacopies_ARG, -1);
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if (pvmetadatacopies < 0)
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pvmetadatacopies = find_config_int(cmd->cft->root,
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"metadata/pvmetadatacopies",
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DEFAULT_PVMETADATACOPIES);
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if (!(dev = dev_cache_get(pv_name, cmd->filter))) {
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log_error("%s: Couldn't find device. Check your filters?",
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pv_name);
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goto error;
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}
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list_init(&mdas);
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if (!(pv = pv_create(cmd->fmt, dev, idp, size, pe_start,
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extent_count, extent_size,
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pvmetadatacopies, pvmetadatasize, &mdas))) {
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log_error("Failed to setup physical volume \"%s\"", pv_name);
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goto error;
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}
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log_verbose("Set up physical volume for \"%s\" with %" PRIu64
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" available sectors", pv_name, pv->size);
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/* Wipe existing label first */
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if (!label_remove(pv->dev)) {
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log_error("Failed to wipe existing label on %s", pv_name);
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goto error;
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}
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if (pp->zero) {
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log_verbose("Zeroing start of device %s", pv_name);
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if (!dev_open_quiet(dev)) {
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log_error("%s not opened: device not zeroed", pv_name);
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goto error;
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}
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if (!dev_zero(dev, UINT64_C(0), (size_t) 2048)) {
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log_error("%s not wiped: aborting", pv_name);
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dev_close(dev);
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goto error;
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}
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dev_close(dev);
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}
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log_very_verbose("Writing physical volume data to disk \"%s\"",
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pv_name);
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if (!(pv_write(cmd, pv, &mdas, arg_int64_value(cmd, labelsector_ARG,
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DEFAULT_LABELSECTOR)))) {
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log_error("Failed to write physical volume \"%s\"", pv_name);
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goto error;
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}
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log_print("Physical volume \"%s\" successfully created", pv_name);
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unlock_vg(cmd, ORPHAN);
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return ECMD_PROCESSED;
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error:
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unlock_vg(cmd, ORPHAN);
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return ECMD_FAILED;
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}
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int pvcreate(struct cmd_context *cmd, int argc, char **argv)
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{
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int i, r;
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int ret = ECMD_PROCESSED;
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struct pvcreate_params pp;
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if (!argc) {
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log_error("Please enter a physical volume path");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, restorefile_ARG) && !arg_count(cmd, uuidstr_ARG)) {
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log_error("--uuid is required with --restorefile");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, uuidstr_ARG) && argc != 1) {
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log_error("Can only set uuid on one volume at once");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, yes_ARG) && !arg_count(cmd, force_ARG)) {
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log_error("Option y can only be given with option f");
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return EINVALID_CMD_LINE;
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}
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if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) {
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log_error("labelsector must be less than %lu",
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LABEL_SCAN_SECTORS);
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return EINVALID_CMD_LINE;
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}
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if (!(cmd->fmt->features & FMT_MDAS) &&
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(arg_count(cmd, metadatacopies_ARG) ||
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arg_count(cmd, metadatasize_ARG))) {
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log_error("Metadata parameters only apply to text format");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, metadatacopies_ARG) &&
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arg_int_value(cmd, metadatacopies_ARG, -1) > 2) {
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log_error("Metadatacopies may only be 0, 1 or 2");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, zero_ARG))
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pp.zero = strcmp(arg_str_value(cmd, zero_ARG, "y"), "n");
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else if (arg_count(cmd, restorefile_ARG) || arg_count(cmd, uuidstr_ARG))
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pp.zero = 0;
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else
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pp.zero = 1;
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for (i = 0; i < argc; i++) {
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r = pvcreate_single(cmd, argv[i], &pp);
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if (r > ret)
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ret = r;
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}
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return ret;
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}
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