1CSYN(8)                     System Manager's Manual                    CSYN(8)
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NAME

6       csyn - ceph synthetic workload generator
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SYNOPSIS

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

12       csyn  is a simple synthetic workload generator for the Ceph distributed
13       file system.  It uses the userspace client library to  generate  simple
14       workloads  against  a  currently  running file system.  The file system
15       need not be mounted via cfuse(8) or the kernel client.
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17       One or more --syn command arguments specify the particular workload, as
18       documented below.
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OPTIONS

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

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

72       csyn is part of the Ceph distributed file system.  Please refer to  the
73       Ceph wiki at http://ceph.newdream.net/wiki for more information.
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SEE ALSO

76       ceph(8), cfuse(8)
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