NAME

       rbd-replay-many - replay a rados block device (RBD) workload on several clients

SYNOPSIS

       rbd-replay-many [ options ] --original-image name host1 [ host2 [ ... ] ] -- rbd_replay_args

DESCRIPTION

       rbd-replay-many  is a utility for replaying a rados block device (RBD) workload on several
       clients.  Although all clients use the same workload, they replay against separate images.
       This matches normal use of librbd, where each original client is a VM with its own image.

       Configuration  and  replay  files  are not automatically copied to clients.  Replay images
       must already exist.

OPTIONS

       --original-image name
              Specifies the name (and snap)  of  the  originally  traced  image.   Necessary  for
              correct name mapping.

       --image-prefix prefix
              Prefix  of image names to replay against.  Specifying --image-prefix=foo results in
              clients replaying against foo-0, foo-1, etc.  Defaults to the original image name.

       --exec program
              Path to the rbd-replay executable.

       --delay seconds
              Delay between starting each client.  Defaults to 0.

EXAMPLES

       Typical usage:

          rbd-replay-many host-0 host-1 --original-image=image -- -c ceph.conf replay.bin

       This results in the following commands being executed:

          ssh host-0 'rbd-replay' --map-image 'image=image-0' -c ceph.conf replay.bin
          ssh host-1 'rbd-replay' --map-image 'image=image-1' -c ceph.conf replay.bin

AVAILABILITY

       rbd-replay-many is part of Ceph, a massively scalable,  open-source,  distributed  storage
       system.  Please  refer  to  the  Ceph  documentation  at  https://docs.ceph.com  for  more
       information.

SEE ALSO

       rbd-replay(8), rbd(8)

COPYRIGHT

       2010-2024, Inktank  Storage,  Inc.  and  contributors.  Licensed  under  Creative  Commons
       Attribution Share Alike 3.0 (CC-BY-SA-3.0)