xfs\_rtcp(8) System Manager's Manual xfs\_rtcp(8)

# [NAME](#NAME)

xfs\_rtcp - XFS realtime copy command

# [SYNOPSIS](#SYNOPSIS)

**xfs\_rtcp** \[ **-e** *extsize* ] \[ **-p** ] *source* ... *target*  
**xfs\_rtcp -V**

# [DESCRIPTION](#DESCRIPTION)

**xfs\_rtcp** copies a file to the realtime partition on an XFS filesystem. If there is more than one *source* and *target*, the final argument (the *target*) must be a directory which already exists.

# [OPTIONS](#OPTIONS)

[**-e extsize**](#e)

Sets the extent size of the destination realtime file.

[**-p**](#p)

Use if the size of the source file is not an even multiple of the block size of the destination filesystem. When **-p** is specified **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.

[**-V**](#V)

Prints the version number and exits.

# [SEE ALSO](#SEE_ALSO)

[**xfs**(5)](/man/os/xfsprogs/xfs.5), [**mkfs.xfs**(8)](/man/os/xfsprogs/mkfs.xfs.8), [**mount**(8)](/man/os/xfsprogs/mount.8).

# [CAVEATS](#CAVEATS)

Currently, realtime partitions are not supported under the Linux version of XFS, and use of a realtime partition **WILL CAUSE CORRUPTION** on the data partition. As such, this command is made available for curious **DEVELOPERS ONLY** at this point in time.

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Document: xfs_rtcp(8) from xfsprogs 7.2.1-r0 (Chainguard OS)
Source: https://kernel.googlesource.com/pub/scm/fs/xfs/xfsprogs-dev