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

NAME
       btrfs-restore - try to restore files from a damaged btrfs filesystem
       image
SYNOPSIS
       btrfs restore [options] <device> <path> | -l <device>
DESCRIPTION
       btrfs restore is used to try to salvage files from a damaged filesystem
       and restore them into <path> or just list the subvolume tree roots. The
       filesystem image is not modified.
       If the filesystem is damaged and cannot be repaired by the other tools
       (btrfs-check(8) or btrfs-rescue(8)), btrfs restore could be used to
       retrieve file data, as far as the metadata are readable. The checks
       done by restore are less strict and the process is usually able to get
       far enough to retrieve data from the whole filesystem. This comes at a
       cost that some data might be incomplete or from older versions if
       they're available.
       There are several options to attempt restoration of various file
       metadata type. You can try a dry run first to see how well the process
       goes and use further options to extend the set of restored metadata.
       For images with damaged tree structures, there are several options to
       point the process to some spare copy.
           Note
           It is recommended to read the following btrfs wiki page if your
           data is not salvaged with default option:
           https://btrfs.wiki.kernel.org/index.php/Restore
OPTIONS
       -s|--snapshots
           get also snapshots that are skippped by default
       -x|--xattr
           get extended attributes
       -m|--metadata
           restore owner, mode and times for files and directories
       -S|--symlinks
           restore symbolic links as well as normal files
       -v|--verbose
           be verbose and print what is being restored
       -i|--ignore-errors
           ignore errors during restoration and continue
       -o|--overwrite
           overwrite directories/files in <path>, eg. for repeated runs
       -t <bytenr>
           use <bytenr> to read the root tree
       -f <bytenr>
           only restore files that are under specified subvolume root pointed
           by <bytenr>
       -u|--super <mirror>
           use given superblock mirror identified by <mirror>, it can be 0,1
           or 2
       -r|--root <rootid>
           only restore files that are under a specified subvolume whose
           objectid is <rootid>
       -d
           find directory
       -l|--list-roots
           list subvolume tree roots, can be used as argument for -r
       -D|--dry-run
           dry run (only list files that would be recovered)
       --path-regex <regex>
           restore only filenames matching a regular expression (regex(7))
           with a mandatory format
           ^/(|home(|/username(|/Desktop(|/.*))))$
           The format is not very comfortable and restores all files in the
           directories in the whole path, so this is not useful for restoring
           single file in a deep hierarchy.
       -c
           ignore case (--path-regex only)
EXIT STATUS
       btrfs restore returns a zero exit status if it succeeds. Non zero is
       returned in case of failure.
AVAILABILITY
       btrfs is part of btrfs-progs. Please refer to the btrfs wiki
       http://btrfs.wiki.kernel.org for further details.
SEE ALSO
       mkfs.btrfs(8), btrfs-rescue(8), btrfs-check(8)

Btrfs v4.9.1                      08/06/2017                  BTRFS-RESTORE(8)