2 * Copyright (C) 2013 SUSE. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #include "kerncompat.h"
25 static const char * const rescue_cmd_group_usage[] = {
26 "btrfs rescue <command> [options] <path>",
30 int btrfs_recover_chunk_tree(char *path, int verbose, int yes);
31 int btrfs_recover_superblocks(char *path, int verbose, int yes);
33 const char * const cmd_chunk_recover_usage[] = {
34 "btrfs rescue chunk-recover [options] <device>",
35 "Recover the chunk tree by scanning the devices one by one.",
37 "-y Assume an answer of `yes' to all questions",
43 const char * const cmd_super_recover_usage[] = {
44 "btrfs rescue super-recover [options] <device>",
45 "Recover bad superblocks from good copies",
47 "-y Assume an answer of `yes' to all questions",
52 int cmd_chunk_recover(int argc, char *argv[])
60 int c = getopt(argc, argv, "yvh");
72 usage(cmd_chunk_recover_usage);
78 usage(cmd_chunk_recover_usage);
82 ret = check_mounted(file);
84 fprintf(stderr, "the device is busy\n");
88 ret = btrfs_recover_chunk_tree(file, verbose, yes);
90 fprintf(stdout, "Recover the chunk tree successfully.\n");
93 fprintf(stdout, "Abort to rebuild the on-disk chunk tree.\n");
95 fprintf(stdout, "Fail to recover the chunk tree.\n");
102 * 0 : All superblocks are valid, no need to recover
103 * 1 : Usage or syntax error
104 * 2 : Recover all bad superblocks successfully
105 * 3 : Fail to Recover bad supeblocks
106 * 4 : Abort to recover bad superblocks
108 int cmd_super_recover(int argc, char **argv)
116 int c = getopt(argc, argv, "vy");
127 usage(cmd_super_recover_usage);
130 argc = argc - optind;
132 usage(cmd_super_recover_usage);
134 dname = argv[optind];
135 ret = check_mounted(dname);
137 fprintf(stderr, "the device is busy\n");
140 ret = btrfs_recover_superblocks(dname, verbose, yes);
144 const struct cmd_group rescue_cmd_group = {
145 rescue_cmd_group_usage, NULL, {
146 { "chunk-recover", cmd_chunk_recover, cmd_chunk_recover_usage, NULL, 0},
147 { "super-recover", cmd_super_recover, cmd_super_recover_usage, NULL, 0},
152 int cmd_rescue(int argc, char **argv)
154 return handle_command_group(&rescue_cmd_group, argc, argv);