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 http://ceph.com/docs 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)

dev                                               Jan 11, 2024                                RBD-REPLAY-MANY(8)