1CEPH-SYN(8)                          Ceph                          CEPH-SYN(8)
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NAME

6       ceph-syn - ceph synthetic workload generator
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SYNOPSIS

9       ceph-syn [ -m monaddr:port ] --syn command ...
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DESCRIPTION

13       ceph-syn is a simple synthetic workload generator for the Ceph distrib‐
14       uted file system. It uses the userspace client library to generate sim‐
15       ple  workloads against a currently running file system. The file system
16       need not be mounted via ceph-fuse(8) or the kernel client.
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18       One or more --syn command arguments specify the particular workload, as
19       documented below.
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OPTIONS

22       -d     Detach from console and daemonize after startup.
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24       -c ceph.conf, --conf=ceph.conf
25              Use   ceph.conf   configuration  file  instead  of  the  default
26              /etc/ceph/ceph.conf  to  determine  monitor   addresses   during
27              startup.
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29       -m monaddress[:port]
30              Connect   to  specified  monitor  (instead  of  looking  through
31              ceph.conf).
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33       --num_client num
34              Run num different clients, each in a separate thread.
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36       --syn workloadspec
37              Run the given workload.  May  be  specified  as  many  times  as
38              needed. Workloads will normally run sequentially.
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WORKLOADS

41       Each  workload should be preceded by --syn on the command line. This is
42       not a complete list.
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44       mknap path snapname
45              Create a snapshot called snapname on path.
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47       rmsnap path snapname
48              Delete snapshot called snapname on path.
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50       rmfile path
51              Delete/unlink path.
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53       writefile sizeinmb blocksize
54              Create a file, named after our client id, that is sizeinmb MB by
55              writing blocksize chunks.
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57       readfile sizeinmb blocksize
58              Read  file,  named  after  our client id, that is sizeinmb MB by
59              writing blocksize chunks.
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61       rw sizeinmb blocksize
62              Write file, then read it back, as above.
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64       makedirs numsubdirs numfiles depth
65              Create a hierarchy of directories that  is  depth  levels  deep.
66              Give  each  directory  numsubdirs  subdirectories  and  numfiles
67              files.
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69       walk   Recursively walk the file system (like find).
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AVAILABILITY

72       ceph-syn is part of Ceph, a massively scalable,  open-source,  distrib‐
73       uted  storage  system.  Please  refer  to  the  Ceph  documentation  at
74       http://ceph.com/docs for more information.
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SEE ALSO

77       ceph(8), ceph-fuse(8)
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80       2010-2021, Inktank Storage, Inc. and contributors. Licensed under  Cre‐
81       ative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
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86dev                              May 13, 2021                      CEPH-SYN(8)
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