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77 lines
1.8 KiB
ReStructuredText
77 lines
1.8 KiB
ReStructuredText
=========================================================
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rbd-replay -- replay rados block device (RBD) workloads
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=========================================================
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.. program:: rbd-replay
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Synopsis
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========
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| **rbd-replay** [ *options* ] *replay_file*
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Description
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===========
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**rbd-replay** is a utility for replaying rados block device (RBD) workloads.
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Options
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=======
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.. option:: -c ceph.conf, --conf ceph.conf
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Use ceph.conf configuration file instead of the default /etc/ceph/ceph.conf to
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determine monitor addresses during startup.
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.. option:: -p pool, --pool pool
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Interact with the given pool. Defaults to 'rbd'.
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.. option:: --latency-multiplier
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Multiplies inter-request latencies. Default: 1.
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.. option:: --read-only
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Only replay non-destructive requests.
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.. option:: --map-image rule
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Add a rule to map image names in the trace to image names in the replay cluster.
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A rule of image1@snap1=image2@snap2 would map snap1 of image1 to snap2 of image2.
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.. option:: --dump-perf-counters
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**Experimental**
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Dump performance counters to standard out before an image is closed.
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Performance counters may be dumped multiple times if multiple images are closed,
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or if the same image is opened and closed multiple times.
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Performance counters and their meaning may change between versions.
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Examples
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========
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To replay workload1 as fast as possible::
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rbd-replay --latency-multiplier=0 workload1
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To replay workload1 but use test_image instead of prod_image::
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rbd-replay --map-image=prod_image=test_image workload1
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Availability
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============
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**rbd-replay** is part of the Ceph distributed storage system. Please refer to
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the Ceph documentation at http://ceph.com/docs for more information.
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See also
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========
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:doc:`rbd-replay-prep <rbd-replay-prep>`\(8),
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:doc:`rbd <rbd>`\(8)
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