carta
xfs_rtcp(8)

xfs_rtcp8

Xfs realtime copy command

Usage

xfs_rtcp [-e extsize] [-p] source ... target

xfs_rtcp -V

Overview

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

-e extsize

Sets the extent size of the destination realtime file.

-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

Prints the version number and exits.

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.

History

  • Arch Linux 2026-11-01 to Debian 8 (Jessie): the text shown here
  • Debian 7 (Wheezy) to Debian 5.0 (Lenny)
  • Debian 4.0 (Etch) to Debian 3.0 (Woody)

-V since Debian 8 (Jessie).

-e until Debian 4.0 (Etch).

From xfsprogs 7.2.1-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.