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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | AVAILABILITY | SEE ALSO | COLOPHON |
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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
-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)
-v|--verbose
(deprecated) alias for global -v option
Global options
-v|--verbose
be verbose and print what is being restored
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 2024-06-14. (At that time, the date of the most recent commit
that was found in the repository was 2024-05-02.) 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 [email protected]
Btrfs v5.16.1 02/06/2022 BTRFS-RESTORE(8)
Pages that refer to this page: btrfs(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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