mirror of
git://sourceware.org/git/lvm2.git
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219 lines
5.3 KiB
C
219 lines
5.3 KiB
C
/*
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* Copyright (C) 2001 Sistina Software
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*
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* LVM is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* LVM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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 LVM; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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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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const char *pv_name = dev_name(pv->dev);
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int consistent = 1;
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int allocatable =
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!strcmp(arg_str_value(cmd, allocatable_ARG, "n"), "y");
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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 ECMD_FAILED;
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}
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if (!(vg = vg_read(cmd, pv->vg_name, &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 ECMD_FAILED;
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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 ECMD_FAILED;
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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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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 (!lock_vol(cmd, ORPHAN, LCK_VG_WRITE)) {
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log_error("Can't get lock for orphans");
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return ECMD_FAILED;
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}
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if (!(pv = pv_read(cmd, pv_name, &mdas, §or))) {
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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 (!*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 allocatable",
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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 unallocatable",
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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\" allocatable",
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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 allocatable",
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pv_name);
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pv->status &= ~ALLOCATABLE_PV;
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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) == 0) {
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log_error("Please give the x option");
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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))) {
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log_error
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("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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