1BTRFSCTL(8)                 System Manager's Manual                BTRFSCTL(8)
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NAME

6       btrfsctl - control a btrfs filesystem
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SYNOPSIS

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

14       B  btrfsctl is deprecated. Please consider to switch to the btrfs util‐
15       ity.
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DESCRIPTION

18       btrfsctl is used to control the filesystem and the files  and  directo‐
19       ries  stored.  It is the tool to create a new snapshot for the filesys‐
20       tem.
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OPTIONS

23       -d file|directory
24              Defragment a file or a directory. If the argument  is  a  direc‐
25              tory, the entire b-tree under the directory is defragged.
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27       -s snapshot-name directory
28              Creates a new snapshot of the directory specified.
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30       -S subvolume-name directory
31              Creates a new subvolume.
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33       -r [+|-]size
34              Resizes  the filesystem with the size specified. If the value is
35              preceded with a signed symbol, the filesystem  is  resized  with
36              respect  to the current filesystem size. size can be suffixed by
37              k,m or g to represent kilobytes, megabytes, or gigabytes respec‐
38              tively.
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40       -A device
41              Scans the device for btrfs filesystem.
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43       -a     Scans all devices present in the system for btrfs filesystem.
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45       -c     Forces a filesystem sync.
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AVAILABILITY

48       btrfsctl  is part of btrfs-progs. Btrfs is currently under heavy devel‐
49       opment, and not suitable for  any  uses  other  than  benchmarking  and
50       review.   Please  refer  to the btrfs wiki http://btrfs.wiki.kernel.org
51       for further details.
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SEE ALSO

54       mkfs.btrfs(8)
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