BTRFSCK(8) System Manager's Manual BTRFSCK(8)NAME
btrfsck - check and repair of a Btrfs filesystem
SYNOPSIS
btrfsck [options] <device>
DESCRIPTION
btrfsck is used to check and optionally repair of a Btrfs filesystem. Now, it can only be run on an unmounted FS. Considering it is not
well-tested in real-life situations yet. if you have a broken Btrfs filesystem, btrfsck may not repair but cause aditional damages.
<device> is the device file where the filesystem is stored.
Options
-s,--super <superblock>
specify which superblock copy that you want to use.
--repair
try to repair the filesystem.
--init-csum-tree
create a new CRC tree.
--init-extent-tree
create a new extent tree.
EXIT CODE
btrfsck will return 0 exit code if no error happened. Other exit code means some problems happened.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO mkfs.btrfs(8), btrfs(8)BTRFSCK(8)
Check Out this Related Man Page
BTRFSCTL(8) System Manager's Manual BTRFSCTL(8)NAME
btrfsctl - control a btrfs filesystem
SYNOPSIS
btrfsctl [ -d file|directory ] [ -s snapshot-name directory ] [ -S subvolume-name directory ] [ -r [+-]size ] [ -A device ] [ -a ] [
-c ]
DESCRIPTION
btrfsctl is used to control the filesystem and the files and directories stored. It is the tool to create a new snapshot for the filesys-
tem.
OPTIONS -d file|directory
Defragment a file or a directory. If the argument is a directory, the entire b-tree under the directory is defragged.
-s snapshot-name directory
Creates a new snapshot of the directory specified.
-S subvolume-name directory
Creates a new subvolume.
-r [+|-]size
Resizes the filesystem with the size specified. If the value is preceded with a signed symbol, the filesystem is resized with
respect to the current filesystem size. size can be suffixed by k,m or g to represent kilobytes, megabytes, or gigabytes respec-
tively.
-A device
Scans the device for btrfs filesystem.
-a Scans all devices present in the system for btrfs filesystem.
-c Forces a filesystem sync.
AVAILABILITY
btrfsctl is part of btrfs-progs. Btrfs is currently under heavy development, and not suitable for any uses other than benchmarking and
review. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details.
SEE ALSO mkfs.btrfs(8)BTRFSCTL(8)
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