Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 78 insertions, 0 deletions

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+:orphan:
+
+=========================================================
+ rbd-replay -- replay rados block device (RBD) workloads
+=========================================================
+
+.. program:: rbd-replay
+
+Synopsis
+========
+
+| **rbd-replay** [ *options* ] *replay_file*
+
+
+Description
+===========
+
+**rbd-replay** is a utility for replaying rados block device (RBD) workloads.
+
+
+Options
+=======
+
+.. option:: -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.
+
+.. option:: -p pool, --pool pool
+
+   Interact with the given pool.  Defaults to 'rbd'.
+
+.. option:: --latency-multiplier
+
+   Multiplies inter-request latencies.  Default: 1.
+
+.. option:: --read-only
+
+   Only replay non-destructive requests.
+
+.. option:: --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.
+
+.. option:: --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 http://ceph.com/docs for more information.
+
+
+See also
+========
+
+:doc:`rbd-replay-prep <rbd-replay-prep>`\(8),
+:doc:`rbd <rbd>`\(8)