xfs_rtcp(8) — Linux manual page

xfs_rtcp(8)              System Manager's Manual              xfs_rtcp(8)

NAME         top

       xfs_rtcp - XFS realtime copy command

SYNOPSIS         top

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

DESCRIPTION         top

       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         top

       -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.

SEE ALSO         top

       xfs(5), mkfs.xfs(8), mount(8).

CAVEATS         top

       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.

COLOPHON         top

       This page is part of the xfsprogs (utilities for XFS filesystems)
       project.  Information about the project can be found at 
       ⟨http://xfs.org/⟩.  If you have a bug report for this manual page,
       send it to [email protected].  This page was obtained from
       the project's upstream Git repository
       ⟨https://git.kernel.org/pub/scm/fs/xfs/xfsprogs-dev.git⟩ on
       2025-08-11.  (At that time, the date of the most recent commit
       that was found in the repository was 2025-06-23.)  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a
       mail to [email protected]

                                                              xfs_rtcp(8)

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