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f65dd341a5
Previously, we have relied on UUIDs alone, and on lvmcache to make getting a "new copy" of VG metadata fast. If the code which triggers the activation has the correct VG metadata at hand (the version which is currently on disk), it can now hand it to the activation code directly.
255 lines
6.9 KiB
C
255 lines
6.9 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 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 Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser 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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static int _pvchange_single(struct cmd_context *cmd, struct volume_group *vg,
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struct physical_volume *pv,
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void *handle __attribute__((unused)))
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{
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const char *pv_name = pv_dev_name(pv);
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char uuid[64] __attribute__((aligned(8)));
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int allocatable = 0;
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int tagargs = 0;
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int mda_ignore = 0;
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tagargs = arg_count(cmd, addtag_ARG) + arg_count(cmd, deltag_ARG);
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if (arg_count(cmd, allocatable_ARG))
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allocatable = !strcmp(arg_str_value(cmd, allocatable_ARG, "n"),
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"y");
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if (arg_count(cmd, metadataignore_ARG))
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mda_ignore = !strcmp(arg_str_value(cmd, metadataignore_ARG, "n"),
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"y");
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/* If in a VG, must change using volume group. */
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if (!is_orphan(pv)) {
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if (tagargs && !(vg->fid->fmt->features & FMT_TAGS)) {
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log_error("Volume group containing %s does not "
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"support tags", pv_name);
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return 0;
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}
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if (arg_count(cmd, uuid_ARG) && lvs_in_vg_activated(vg)) {
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log_error("Volume group containing %s has active "
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"logical volumes", pv_name);
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return 0;
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}
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if (!archive(vg))
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return 0;
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} else {
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if (tagargs) {
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log_error("Can't change tag on Physical Volume %s not "
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"in volume group", pv_name);
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return 0;
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}
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}
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if (arg_count(cmd, allocatable_ARG)) {
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if (is_orphan(pv) &&
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!(pv->fmt->features & FMT_ORPHAN_ALLOCATABLE)) {
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log_error("Allocatability not supported by orphan "
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"%s format PV %s", pv->fmt->name, pv_name);
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return 0;
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}
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/* change allocatability for a PV */
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if (allocatable && (pv_status(pv) & ALLOCATABLE_PV)) {
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log_warn("Physical volume \"%s\" is already "
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"allocatable.", pv_name);
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return 1;
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}
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if (!allocatable && !(pv_status(pv) & ALLOCATABLE_PV)) {
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log_warn("Physical volume \"%s\" is already "
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"unallocatable.", pv_name);
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return 1;
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}
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if (allocatable) {
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log_verbose("Setting physical volume \"%s\" "
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"allocatable", pv_name);
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pv->status |= ALLOCATABLE_PV;
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} else {
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log_verbose("Setting physical volume \"%s\" NOT "
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"allocatable", pv_name);
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pv->status &= ~ALLOCATABLE_PV;
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}
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}
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if (tagargs) {
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/* tag or deltag */
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if (arg_count(cmd, addtag_ARG) && !change_tag(cmd, NULL, NULL, pv, addtag_ARG))
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return_0;
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if (arg_count(cmd, deltag_ARG) && !change_tag(cmd, NULL, NULL, pv, deltag_ARG))
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return_0;
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}
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if (arg_count(cmd, metadataignore_ARG)) {
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if ((vg_mda_copies(vg) != VGMETADATACOPIES_UNMANAGED) &&
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(arg_count(cmd, force_ARG) == PROMPT) &&
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yes_no_prompt("Override preferred number of copies "
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"of VG %s metadata? [y/n]: ",
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pv_vg_name(pv)) == 'n') {
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log_error("Physical volume %s not changed", pv_name);
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return 0;
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}
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if (!pv_change_metadataignore(pv, mda_ignore))
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return_0;
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}
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if (arg_count(cmd, uuid_ARG)) {
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/* --uuid: Change PV ID randomly */
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memcpy(&pv->old_id, &pv->id, sizeof(pv->id));
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if (!id_create(&pv->id)) {
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log_error("Failed to generate new random UUID for %s.",
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pv_name);
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return 0;
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}
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if (!id_write_format(&pv->id, uuid, sizeof(uuid)))
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return 0;
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log_verbose("Changing uuid of %s to %s.", pv_name, uuid);
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if (!is_orphan(pv) && (!pv_write(cmd, pv, 1))) {
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log_error("pv_write with new uuid failed "
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"for %s.", pv_name);
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return 0;
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}
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}
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log_verbose("Updating physical volume \"%s\"", pv_name);
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if (!is_orphan(pv)) {
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if (!vg_write(vg) || !vg_commit(vg)) {
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log_error("Failed to store physical volume \"%s\" in "
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"volume group \"%s\"", pv_name, vg->name);
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return 0;
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}
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backup(vg);
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} else if (!(pv_write(cmd, pv, 0))) {
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log_error("Failed to store physical volume \"%s\"",
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pv_name);
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return 0;
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}
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log_print_unless_silent("Physical volume \"%s\" changed", pv_name);
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return 1;
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}
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int pvchange(struct cmd_context *cmd, int argc, char **argv)
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{
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int opt = 0;
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int done = 0;
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int total = 0;
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struct volume_group *vg;
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const char *vg_name;
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char *pv_name;
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struct pv_list *pvl;
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struct dm_list *vgnames;
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struct str_list *sll;
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if (!(arg_count(cmd, allocatable_ARG) + arg_is_set(cmd, addtag_ARG) +
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arg_is_set(cmd, deltag_ARG) + arg_count(cmd, uuid_ARG) +
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arg_count(cmd, metadataignore_ARG))) {
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log_error("Please give one or more of -x, -uuid, "
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"--addtag, --deltag or --metadataignore");
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return EINVALID_CMD_LINE;
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}
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if (!(arg_count(cmd, all_ARG)) && !argc) {
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log_error("Please give a physical volume path");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, all_ARG) && argc) {
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log_error("Option a and PhysicalVolumePath are exclusive");
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return EINVALID_CMD_LINE;
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}
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if (argc) {
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log_verbose("Using physical volume(s) on command line");
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for (; opt < argc; opt++) {
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pv_name = argv[opt];
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dm_unescape_colons_and_at_signs(pv_name, NULL, NULL);
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vg_name = find_vgname_from_pvname(cmd, pv_name);
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if (!vg_name) {
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log_error("Failed to read physical volume %s",
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pv_name);
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continue;
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}
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vg = vg_read_for_update(cmd, vg_name, NULL, 0);
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if (vg_read_error(vg)) {
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release_vg(vg);
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stack;
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continue;
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}
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pvl = find_pv_in_vg(vg, pv_name);
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if (!pvl || !pvl->pv) {
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log_error("Unable to find %s in %s",
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pv_name, vg_name);
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continue;
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}
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total++;
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done += _pvchange_single(cmd, vg,
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pvl->pv, NULL);
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unlock_and_release_vg(cmd, vg, vg_name);
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}
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} else {
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log_verbose("Scanning for physical volume names");
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/* FIXME: share code with toollib */
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/*
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* Take the global lock here so the lvmcache remains
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* consistent across orphan/non-orphan vg locks. If we don't
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* take the lock here, pvs with 0 mdas in a non-orphan VG will
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* be processed twice.
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*/
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if (!lock_vol(cmd, VG_GLOBAL, LCK_VG_WRITE, NULL)) {
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log_error("Unable to obtain global lock.");
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return ECMD_FAILED;
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}
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if ((vgnames = get_vgnames(cmd, 1)) &&
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!dm_list_empty(vgnames)) {
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dm_list_iterate_items(sll, vgnames) {
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vg = vg_read_for_update(cmd, sll->str, NULL, 0);
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if (vg_read_error(vg)) {
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release_vg(vg);
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stack;
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continue;
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}
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dm_list_iterate_items(pvl, &vg->pvs) {
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total++;
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done += _pvchange_single(cmd, vg,
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pvl->pv,
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NULL);
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}
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unlock_and_release_vg(cmd, vg, sll->str);
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}
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}
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unlock_vg(cmd, VG_GLOBAL);
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}
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log_print_unless_silent("%d physical volume%s changed / %d physical volume%s "
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"not changed",
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done, done == 1 ? "" : "s",
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total - done, (total - done) == 1 ? "" : "s");
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return (total == done) ? ECMD_PROCESSED : ECMD_FAILED;
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}
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