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 filesystem.
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 respectively.
- -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.