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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | AVAILABILITY | SEE ALSO | COLOPHON |
BTRFS-RESTORE(8) Btrfs Manual BTRFS-RESTORE(8)
btrfs-restore - try to restore files from a damaged btrfs filesystem
image
btrfs restore [options] <device> <path> | -l <device>
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
-s|--snapshots
get also snapshots that are skipped 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)
btrfs restore returns a zero exit status if it succeeds. Non zero is
returned in case of failure.
btrfs is part of btrfs-progs. Please refer to the btrfs wiki
http://btrfs.wiki.kernel.org for further details.
mkfs.btrfs(8), btrfs-rescue(8), btrfs-check(8)
This page is part of the btrfs-progs (btrfs filesystem tools)
project. Information about the project can be found at
⟨https://btrfs.wiki.kernel.org/index.php/Btrfs_source_repositories⟩.
If you have a bug report for this manual page, see
⟨https://btrfs.wiki.kernel.org/index.php/Problem_FAQ#How_do_I_report_bugs_and_issues.3F⟩.
This page was obtained from the project's upstream Git repository
⟨git://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git⟩
on 2017-07-05. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-to-
date source for the page, or you have corrections or improvements to
the information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
Btrfs v4.6.1 03/12/2017 BTRFS-RESTORE(8)
Pages that refer to this page: btrfs(8)