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Add fallocate manpage

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sin 2014-04-12 14:04:38 +01:00
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.TH FALLOCATE 1 ubase-VERSION
.SH NAME
\fBfallocate\fR - preallocate blocks to a file
.SH SYNOPSIS
\fBfallocate\fR [\fB-o\fI offset\fR] \fB-l\fR \fIlength file\fR
.SH DESCRIPTION
\fBfallocate\fR preallocates blocks to a file. Only certain filesystems
support the fallocate system call. This is a very fast operation to allocate
uninitialized blocks in a file without doing any IO.
As of the Linux Kernel v2.6.31, the fallocate system call is supported
by the btrfs, ext4, ocfs2, and xfs filesystems.
.SH OPTIONS
.TP
\fB-o\fR Specifies the beginning offset of the allocation, in bytes.
.TP
\fB-l\fR Specifies the length of the allocation, in bytes.
.SH SEE ALSO
fallocate(2)