46 lines
1.5 KiB
Groff
46 lines
1.5 KiB
Groff
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.TH BTRFSCTL 8
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.SH NAME
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btrfsctl \- control a btrfs filesystem
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.SH SYNOPSIS
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.B btrfsctl
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[ \fB\-d\fP\fI file|directory \fP ]
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[ \fB\-s\fP\fI snapshot-name directory\fP ]
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[ \fB \-S\fP\fI subvolume-name directory\fP ]
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[ \fB \-r\fP\fI [+-]size\fP ]
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[ \fB \-A\fP\fI device\fP ]
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[ \fB \-a\fP ]
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[ \fB \-c\fP ]
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.SH DESCRIPTION
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.B btrfsctl
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is used to control the filesystem and the files and directories stored. It is the tool to create a new snapshot for the filesystem.
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.SH OPTIONS
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.TP
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\fB\-d\fR \fIfile|directory\fR
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Defragment a file or a directory. If the argument is a directory, the entire b-tree under the directory is defragged.
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.TP
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\fB\-s\fR \fIsnapshot-name directory\fR
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Creates a new \fIsnapshot\fP of the \fIdirectory\fP specified.
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.TP
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\fB\-S\fR \fIsubvolume-name directory\fR
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Creates a new subvolume.
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.TP
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\fB\-r\fR \fI[+|-]size\fR
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Resizes the filesystem with the \fIsize\fP specified. If the value is preceded with a signed symbol, the filesystem is resized with respect to the current filesystem size. \fIsize\fP can be suffixed by k,m or g to represent kilobytes, megabytes, or gigabytes respectively.
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.TP
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\fB\-A\fR \fIdevice\fR
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Scans the \fIdevice\fR for btrfs filesystem.
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.TP
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\fB\-a\fR
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Scans all devices present in the system for btrfs filesystem.
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.TP
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\fB\-c\fR
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Forces a filesystem sync.
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.SH AVAILABILITY
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.B btrfsctl
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is part of btrfs-progs. Btrfs is currently under heavy development,
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and not suitable for for any uses other than benchmarking and review.
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Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for
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further details.
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.SH SEE ALSO
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.BR mkfs.btrfs (8)
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