1
0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-22 17:35:59 +03:00
lvm2/tools/vgcfgrestore.c
2016-06-21 22:24:52 +01:00

114 lines
3.3 KiB
C

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tools.h"
#include "lvmetad-client.h"
int vgcfgrestore(struct cmd_context *cmd, int argc, char **argv)
{
const char *vg_name = NULL;
int lvmetad_rescan = 0;
int ret;
if (argc == 1) {
vg_name = skip_dev_dir(cmd, argv[0], NULL);
if (!validate_name(vg_name)) {
log_error("Volume group name \"%s\" is invalid", vg_name);
return EINVALID_CMD_LINE;
}
} else if (!(arg_is_set(cmd, list_ARG) && arg_is_set(cmd, file_ARG))) {
log_error("Please specify a *single* volume group to restore.");
return EINVALID_CMD_LINE;
}
/*
* FIXME: overloading the -l arg for now to display a
* list of archive files for a particular vg
*/
if (arg_is_set(cmd, list_ARG)) {
if (!(arg_is_set(cmd,file_ARG) ?
archive_display_file(cmd,
arg_str_value(cmd, file_ARG, "")) :
archive_display(cmd, vg_name)))
return_ECMD_FAILED;
return ECMD_PROCESSED;
}
/*
* lvmetad does not handle a VG being restored, which would require
* vg_remove of the existing VG, then vg_update of the restored VG. A
* command failure after removing the existing VG from lvmetad would
* not be easily recovered from. So, disable the lvmetad cache before
* doing the restore. After the VG is restored on disk, rescan
* metadata from disk to populate lvmetad from scratch which will pick
* up the VG that was restored on disk.
*/
if (lvmetad_used()) {
lvmetad_set_disabled(cmd, LVMETAD_DISABLE_REASON_VGRESTORE);
lvmetad_disconnect();
lvmetad_rescan = 1;
}
if (!lock_vol(cmd, vg_name, LCK_VG_WRITE, NULL)) {
log_error("Unable to lock volume group %s", vg_name);
return ECMD_FAILED;
}
if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE, NULL)) {
log_error("Unable to lock orphans");
unlock_vg(cmd, vg_name);
return ECMD_FAILED;
}
cmd->handles_unknown_segments = 1;
if (!(arg_is_set(cmd, file_ARG) ?
backup_restore_from_file(cmd, vg_name,
arg_str_value(cmd, file_ARG, ""),
arg_count(cmd, force_long_ARG)) :
backup_restore(cmd, vg_name, arg_count(cmd, force_long_ARG)))) {
unlock_vg(cmd, VG_ORPHANS);
unlock_vg(cmd, vg_name);
log_error("Restore failed.");
ret = ECMD_FAILED;
goto rescan;
}
ret = ECMD_PROCESSED;
log_print_unless_silent("Restored volume group %s", vg_name);
unlock_vg(cmd, VG_ORPHANS);
unlock_vg(cmd, vg_name);
rescan:
if (lvmetad_rescan) {
if (!lvmetad_connect(cmd)) {
log_warn("WARNING: Failed to connect to lvmetad.");
log_warn("WARNING: Update lvmetad with pvscan --cache.");
goto out;
}
if (!refresh_filters(cmd))
stack;
if (!lvmetad_pvscan_all_devs(cmd, 1)) {
log_warn("WARNING: Failed to scan devices.");
log_warn("WARNING: Update lvmetad with pvscan --cache.");
goto out;
}
}
out:
return ret;
}