1BTRFS-RESTORE(8)                 Btrfs Manual                 BTRFS-RESTORE(8)
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NAME

6       btrfs-restore - try to restore files from a damaged btrfs filesystem
7       image
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SYNOPSIS

10       btrfs restore [options] <device> <path> | -l <device>
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DESCRIPTION

13       btrfs restore is used to try to salvage files from a damaged filesystem
14       and restore them into <path> or just list the subvolume tree roots. The
15       filesystem image is not modified.
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17       If the filesystem is damaged and cannot be repaired by the other tools
18       (btrfs-check(8) or btrfs-rescue(8)), btrfs restore could be used to
19       retrieve file data, as far as the metadata are readable. The checks
20       done by restore are less strict and the process is usually able to get
21       far enough to retrieve data from the whole filesystem. This comes at a
22       cost that some data might be incomplete or from older versions if
23       they’re available.
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25       There are several options to attempt restoration of various file
26       metadata type. You can try a dry run first to see how well the process
27       goes and use further options to extend the set of restored metadata.
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29       For images with damaged tree structures, there are several options to
30       point the process to some spare copy.
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32           Note
33           It is recommended to read the following btrfs wiki page if your
34           data is not salvaged with default option:
35           https://btrfs.wiki.kernel.org/index.php/Restore
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OPTIONS

38       -s|--snapshots
39           get also snapshots that are skippped by default
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41       -x|--xattr
42           get extended attributes
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44       -m|--metadata
45           restore owner, mode and times for files and directories
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47       -S|--symlinks
48           restore symbolic links as well as normal files
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50       -v|--verbose
51           be verbose and print what is being restored
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53       -i|--ignore-errors
54           ignore errors during restoration and continue
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56       -o|--overwrite
57           overwrite directories/files in <path>, eg. for repeated runs
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59       -t <bytenr>
60           use <bytenr> to read the root tree
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62       -f <bytenr>
63           only restore files that are under specified subvolume root pointed
64           by <bytenr>
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66       -u|--super <mirror>
67           use given superblock mirror identified by <mirror>, it can be 0,1
68           or 2
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70       -r|--root <rootid>
71           only restore files that are under a specified subvolume whose
72           objectid is <rootid>
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74       -d
75           find directory
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77       -l|--list-roots
78           list subvolume tree roots, can be used as argument for -r
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80       -D|--dry-run
81           dry run (only list files that would be recovered)
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83       --path-regex <regex>
84           restore only filenames matching a regular expression (regex(7))
85           with a mandatory format
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87           ^/(|home(|/username(|/Desktop(|/.*))))$
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89           The format is not very comfortable and restores all files in the
90           directories in the whole path, so this is not useful for restoring
91           single file in a deep hierarchy.
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93       -c
94           ignore case (--path-regex only)
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EXIT STATUS

97       btrfs restore returns a zero exit status if it succeeds. Non zero is
98       returned in case of failure.
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AVAILABILITY

101       btrfs is part of btrfs-progs. Please refer to the btrfs wiki
102       http://btrfs.wiki.kernel.org for further details.
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SEE ALSO

105       mkfs.btrfs(8), btrfs-rescue(8), btrfs-check(8)
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109Btrfs v4.9.1                      08/06/2017                  BTRFS-RESTORE(8)
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