NAME

       rbd-replay - replay rados block device (RBD) workloads

SYNOPSIS

       rbd-replay [ options ] replay_file

DESCRIPTION

       rbd-replay is a utility for replaying rados block device (RBD) workloads.

OPTIONS

       -c ceph.conf, --conf ceph.conf
              Use  ceph.conf  configuration  file  instead  of the default /etc/ceph/ceph.conf to
              determine monitor addresses during startup.

       -p pool, --pool pool
              Interact with the given pool.  Defaults to 'rbd'.

       --latency-multiplier
              Multiplies inter-request latencies.  Default: 1.

       --read-only
              Only replay non-destructive requests.

       --map-image rule
              Add a rule to map image names in the trace to image names in the replay cluster.  A
              rule of image1@snap1=image2@snap2 would map snap1 of image1 to snap2 of image2.

       --dump-perf-counters
              Experimental  Dump  performance counters to standard out before an image is closed.
              Performance counters may be dumped multiple times if multiple images are closed, or
              if  the  same  image is opened and closed multiple times.  Performance counters and
              their meaning may change between versions.

EXAMPLES

       To replay workload1 as fast as possible:

          rbd-replay --latency-multiplier=0 workload1

       To replay workload1 but use test_image instead of prod_image:

          rbd-replay --map-image=prod_image=test_image workload1

AVAILABILITY

       rbd-replay 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-prep(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)