1RBD-REPLAY-MANY(8) Ceph RBD-REPLAY-MANY(8)
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6 rbd-replay-many - replay a rados block device (RBD) workload on several
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10 rbd-replay-many [ options ] --original-image name host1 [ host2 [ ... ] ] -- rbd_replay_args
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14 rbd-replay-many is a utility for replaying a rados block device (RBD)
15 workload on several clients. Although all clients use the same work‐
16 load, they replay against separate images. This matches normal use of
17 librbd, where each original client is a VM with its own image.
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19 Configuration and replay files are not automatically copied to clients.
20 Replay images must already exist.
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23 --original-image name
24 Specifies the name (and snap) of the originally traced image.
25 Necessary for correct name mapping.
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27 --image-prefix prefix
28 Prefix of image names to replay against. Specifying
29 --image-prefix=foo results in clients replaying against foo-0,
30 foo-1, etc. Defaults to the original image name.
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32 --exec program
33 Path to the rbd-replay executable.
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35 --delay seconds
36 Delay between starting each client. Defaults to 0.
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39 Typical usage:
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41 rbd-replay-many host-0 host-1 --original-image=image -- -c ceph.conf replay.bin
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43 This results in the following commands being executed:
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45 ssh host-0 'rbd-replay' --map-image 'image=image-0' -c ceph.conf replay.bin
46 ssh host-1 'rbd-replay' --map-image 'image=image-1' -c ceph.conf replay.bin
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49 rbd-replay-many is part of Ceph, a massively scalable, open-source,
50 distributed storage system. Please refer to the Ceph documentation at
51 http://ceph.com/docs for more information.
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54 rbd-replay(8), rbd(8)
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57 2010-2020, Inktank Storage, Inc. and contributors. Licensed under Cre‐
58 ative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
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63dev Apr 21, 2020 RBD-REPLAY-MANY(8)