diff options
| author | Josef Bacik <jbacik@fusionio.com> | 2013-10-23 16:24:03 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-11-07 13:29:30 -0500 |
| commit | 337f86fea1d06e189f3cf234adba2567a07678bd (patch) | |
| tree | c4fe5f392480000ffbf2419d2ba53568153e304a /cmds-check.c | |
| parent | 4fc17596aaa2b03ee38c467585465923d62b1510 (diff) | |
Btrfs-progs: add -b to btrfsck to look at backup roots
In some cases the tree root is so hosed we can't get anything useful out of it.
So add the -b option to btrfsck to make us look for the most recent backup tree
root to use for repair. Then we can hopefully get ourselves into a working
state. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'cmds-check.c')
| -rw-r--r-- | cmds-check.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/cmds-check.c b/cmds-check.c index 668af158..3453cac2 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -6022,6 +6022,7 @@ static struct option long_options[] = { { "repair", 0, NULL, 0 }, { "init-csum-tree", 0, NULL, 0 }, { "init-extent-tree", 0, NULL, 0 }, + { "backup", 0, NULL, 0 }, { NULL, 0, NULL, 0} }; @@ -6030,6 +6031,7 @@ const char * const cmd_check_usage[] = { "Check an unmounted btrfs filesystem.", "", "-s|--super <superblock> use this superblock copy", + "-b|--backup use the backup root copy", "--repair try to repair the filesystem", "--init-csum-tree create a new CRC tree", "--init-extent-tree create a new extent tree", @@ -6043,6 +6045,7 @@ int cmd_check(int argc, char **argv) struct btrfs_fs_info *info; u64 bytenr = 0; char uuidbuf[37]; + int backup_root = 0; int ret; int num; int option_index = 0; @@ -6052,12 +6055,15 @@ int cmd_check(int argc, char **argv) while(1) { int c; - c = getopt_long(argc, argv, "as:", long_options, + c = getopt_long(argc, argv, "as:b", long_options, &option_index); if (c < 0) break; switch(c) { case 'a': /* ignored */ break; + case 'b': + backup_root = 1; + break; case 's': num = atol(optarg); bytenr = btrfs_sb_offset(num); @@ -6099,7 +6105,7 @@ int cmd_check(int argc, char **argv) return -EBUSY; } - info = open_ctree_fs_info(argv[optind], bytenr, 0, rw, 1); + info = open_ctree_fs_info(argv[optind], bytenr, 0, rw, 1, backup_root); if (!info) { fprintf(stderr, "Couldn't open file system\n"); return -EIO; |