mirror of
git://sourceware.org/git/lvm2.git
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293 lines
7.3 KiB
C
293 lines
7.3 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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/* FIXME Locking. PVs in VG. */
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static int _pvchange_single(struct cmd_context *cmd, struct physical_volume *pv,
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void *handle)
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{
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struct volume_group *vg = NULL;
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struct pv_list *pvl;
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struct list mdas;
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uint64_t sector;
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uint32_t orig_pe_alloc_count;
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const char *pv_name = dev_name(pv->dev);
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const char *tag = NULL;
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const char *orig_vg_name;
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char uuid[64];
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int consistent = 1;
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int allocatable = 0;
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int tagarg = 0;
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list_init(&mdas);
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if (arg_count(cmd, addtag_ARG))
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tagarg = addtag_ARG;
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else if (arg_count(cmd, deltag_ARG))
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tagarg = 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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else if (tagarg && !(tag = arg_str_value(cmd, tagarg, NULL))) {
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log_error("Failed to get tag");
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return 0;
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}
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/* If in a VG, must change using volume group. */
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if (*pv->vg_name) {
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log_verbose("Finding volume group of physical volume \"%s\"",
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pv_name);
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if (!lock_vol(cmd, pv->vg_name, LCK_VG_WRITE)) {
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log_error("Can't get lock for %s", pv->vg_name);
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return 0;
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}
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if (!(vg = vg_read(cmd, pv->vg_name, NULL, &consistent))) {
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unlock_vg(cmd, pv->vg_name);
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log_error("Unable to find volume group of \"%s\"",
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pv_name);
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return 0;
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}
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if (vg->status & EXPORTED_VG) {
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unlock_vg(cmd, pv->vg_name);
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log_error("Volume group \"%s\" is exported", vg->name);
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return 0;
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}
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if (!(vg->status & LVM_WRITE)) {
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unlock_vg(cmd, pv->vg_name);
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log_error("Volume group \"%s\" is read-only", vg->name);
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return 0;
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}
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if (!(pvl = find_pv_in_vg(vg, pv_name))) {
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unlock_vg(cmd, pv->vg_name);
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log_error
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("Unable to find \"%s\" in volume group \"%s\"",
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pv_name, vg->name);
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return 0;
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}
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if (tagarg && !(vg->fid->fmt->features & FMT_TAGS)) {
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unlock_vg(cmd, pv->vg_name);
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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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unlock_vg(cmd, pv->vg_name);
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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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pv = pvl->pv;
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if (!archive(vg))
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return 0;
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} else {
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if (tagarg) {
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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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if (!lock_vol(cmd, ORPHAN, LCK_VG_WRITE)) {
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log_error("Can't get lock for orphans");
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return 0;
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}
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if (!(pv = pv_read(cmd, pv_name, &mdas, §or, 1))) {
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unlock_vg(cmd, ORPHAN);
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log_error("Unable to read PV \"%s\"", 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 (!*pv->vg_name &&
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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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unlock_vg(cmd, ORPHAN);
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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 & ALLOCATABLE_PV)) {
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log_error("Physical volume \"%s\" is already "
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"allocatable", pv_name);
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if (*pv->vg_name)
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unlock_vg(cmd, pv->vg_name);
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else
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unlock_vg(cmd, ORPHAN);
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return 1;
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}
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if (!allocatable && !(pv->status & ALLOCATABLE_PV)) {
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log_error("Physical volume \"%s\" is already "
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"unallocatable", pv_name);
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if (*pv->vg_name)
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unlock_vg(cmd, pv->vg_name);
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else
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unlock_vg(cmd, ORPHAN);
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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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} else if (tagarg) {
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/* tag or deltag */
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if ((tagarg == addtag_ARG)) {
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if (!str_list_add(cmd->mem, &pv->tags, tag)) {
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log_error("Failed to add tag %s to physical "
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"volume %s", tag, pv_name);
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return 0;
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}
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} else {
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if (!str_list_del(&pv->tags, tag)) {
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log_error("Failed to remove tag %s from "
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"physical volume" "%s", tag, pv_name);
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return 0;
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}
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}
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} else {
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/* --uuid: Change PV ID randomly */
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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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stack;
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return 0;
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}
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log_verbose("Changing uuid of %s to %s.", pv_name, uuid);
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if (*pv->vg_name) {
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orig_vg_name = pv->vg_name;
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orig_pe_alloc_count = pv->pe_alloc_count;
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pv->vg_name = ORPHAN;
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pv->pe_alloc_count = 0;
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if (!(pv_write(cmd, pv, NULL, INT64_C(-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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pv->vg_name = orig_vg_name;
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pv->pe_alloc_count = orig_pe_alloc_count;
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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 (*pv->vg_name) {
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if (!vg_write(vg) || !vg_commit(vg)) {
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unlock_vg(cmd, pv->vg_name);
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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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unlock_vg(cmd, pv->vg_name);
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} else {
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if (!(pv_write(cmd, pv, NULL, INT64_C(-1)))) {
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unlock_vg(cmd, ORPHAN);
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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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unlock_vg(cmd, ORPHAN);
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}
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log_print("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 physical_volume *pv;
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char *pv_name;
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struct pv_list *pvl;
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struct list *pvslist;
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struct list mdas;
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list_init(&mdas);
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if (arg_count(cmd, allocatable_ARG) + arg_count(cmd, addtag_ARG) +
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arg_count(cmd, deltag_ARG) + arg_count(cmd, uuid_ARG) != 1) {
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log_error("Please give exactly one option of -x, -uuid, "
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"--addtag or --deltag");
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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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/* FIXME Read VG instead - pv_read will fail */
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if (!(pv = pv_read(cmd, pv_name, &mdas, NULL, 1))) {
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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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total++;
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done += _pvchange_single(cmd, pv, NULL);
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}
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} else {
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log_verbose("Scanning for physical volume names");
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if (!(pvslist = get_pvs(cmd))) {
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return ECMD_FAILED;
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}
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list_iterate_items(pvl, pvslist) {
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total++;
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done += _pvchange_single(cmd, pvl->pv, NULL);
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}
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}
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log_print("%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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