File: xfs_rtcp.8

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.TH xfs_rtcp 8
.SH NAME
xfs_rtcp \- XFS realtime copy command
.SH SYNOPSIS
.B xfs_rtcp
[
.B \-e
.I extsize
] [
.B -p
]
.IR source " ... " target
.SH DESCRIPTION
.B xfs_rtcp
copies a file to the realtime partition on an XFS filesystem.
If there is more than one
.I source
and
.IR target ,
the final argument (the
.IR target )
must be a directory which already exists.
.SH OPTIONS
.TP
.BI \-e " extsize"
Sets the extent size of the destination realtime file.
.TP
.B \-p
Use if the size of the source file is not an even multiple of
the block size of the destination filesystem. When
.B \-p
is specified
.B xfs_rtcp
will pad the destination file to a size which is an even multiple
of the filesystem block size.
This is necessary since the realtime file is created using
direct I/O and the minimum I/O is the filesystem block size.
.SH SEE ALSO
.BR xfs (5),
.BR mkfs.xfs (8),
.BR mount (8).
.SH CAVEATS
Currently, realtime partitions are not supported under the Linux
version of XFS, and use of a realtime partition
.B WILL CAUSE CORRUPTION
on the data partition. As such, this command is made available for curious
.B DEVELOPERS ONLY
at this point in time.