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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)



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