mirror of
git://sourceware.org/git/lvm2.git
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114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2009 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "tools.h"
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#include "lvmetad-client.h"
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int vgcfgrestore(struct cmd_context *cmd, int argc, char **argv)
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{
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const char *vg_name = NULL;
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int lvmetad_rescan = 0;
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int ret;
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if (argc == 1) {
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vg_name = skip_dev_dir(cmd, argv[0], NULL);
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if (!validate_name(vg_name)) {
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log_error("Volume group name \"%s\" is invalid", vg_name);
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return EINVALID_CMD_LINE;
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}
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} else if (!(arg_is_set(cmd, list_ARG) && arg_is_set(cmd, file_ARG))) {
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log_error("Please specify a *single* volume group to restore.");
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return EINVALID_CMD_LINE;
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}
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/*
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* FIXME: overloading the -l arg for now to display a
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* list of archive files for a particular vg
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*/
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if (arg_is_set(cmd, list_ARG)) {
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if (!(arg_is_set(cmd,file_ARG) ?
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archive_display_file(cmd,
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arg_str_value(cmd, file_ARG, "")) :
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archive_display(cmd, vg_name)))
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return_ECMD_FAILED;
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return ECMD_PROCESSED;
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}
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/*
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* lvmetad does not handle a VG being restored, which would require
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* vg_remove of the existing VG, then vg_update of the restored VG. A
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* command failure after removing the existing VG from lvmetad would
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* not be easily recovered from. So, disable the lvmetad cache before
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* doing the restore. After the VG is restored on disk, rescan
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* metadata from disk to populate lvmetad from scratch which will pick
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* up the VG that was restored on disk.
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*/
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if (lvmetad_used()) {
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lvmetad_set_disabled(cmd, LVMETAD_DISABLE_REASON_VGRESTORE);
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lvmetad_disconnect();
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lvmetad_rescan = 1;
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}
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if (!lock_vol(cmd, vg_name, LCK_VG_WRITE, NULL)) {
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log_error("Unable to lock volume group %s", vg_name);
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return ECMD_FAILED;
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}
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if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE, NULL)) {
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log_error("Unable to lock orphans");
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unlock_vg(cmd, vg_name);
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return ECMD_FAILED;
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}
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cmd->handles_unknown_segments = 1;
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if (!(arg_is_set(cmd, file_ARG) ?
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backup_restore_from_file(cmd, vg_name,
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arg_str_value(cmd, file_ARG, ""),
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arg_count(cmd, force_long_ARG)) :
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backup_restore(cmd, vg_name, arg_count(cmd, force_long_ARG)))) {
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unlock_vg(cmd, VG_ORPHANS);
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unlock_vg(cmd, vg_name);
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log_error("Restore failed.");
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ret = ECMD_FAILED;
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goto rescan;
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}
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ret = ECMD_PROCESSED;
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log_print_unless_silent("Restored volume group %s", vg_name);
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unlock_vg(cmd, VG_ORPHANS);
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unlock_vg(cmd, vg_name);
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rescan:
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if (lvmetad_rescan) {
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if (!lvmetad_connect(cmd)) {
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log_warn("WARNING: Failed to connect to lvmetad.");
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log_warn("WARNING: Update lvmetad with pvscan --cache.");
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goto out;
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}
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if (!refresh_filters(cmd))
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stack;
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if (!lvmetad_pvscan_all_devs(cmd, 1)) {
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log_warn("WARNING: Failed to scan devices.");
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log_warn("WARNING: Update lvmetad with pvscan --cache.");
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goto out;
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}
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}
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out:
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return ret;
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}
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