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man page of btrfsctl

btrfsctl: control a btrfs filesystem


btrfsctl - control a btrfs filesystem


btrfsctl [ -d file|directory ] [ -s snapshot-name directory ] [ -S subvolume-name directory ] [ -r [+-]size ] [ -A device ] [ -a ] [ -c ]


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.
-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.
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 //btrfs.wiki.kernel.org for further details.


mkfs.btrfs(8) BTRFSCTL(8)

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