CEPH-SYN - Online Linux Manual PageSection : 8
Updated : Mar 31, 2021
Source : dev
Note : Ceph

NAMEceph-syn − ceph synthetic workload generator

SYNOPSISceph−syn [ −m monaddr:port ] −−syn command ​...

DESCRIPTIONceph−syn is a simple synthetic workload generator for the Ceph distributed file system. It uses the userspace client library to generate simple workloads against a currently running file system. The file system need not be mounted via ceph−fuse(8) or the kernel client. One or more −−syn command arguments specify the particular workload, as documented below.

OPTIONS −d  Detach from console and daemonize after startup. −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. −m monaddress[:port]  Connect to specified monitor (instead of looking through ceph.conf). −−num_client num  Run num different clients, each in a separate thread. −−syn workloadspec  Run the given workload. May be specified as many times as needed. Workloads will normally run sequentially.

WORKLOADSEach workload should be preceded by −−syn on the command line. This is not a complete list. mknap path snapname  Create a snapshot called snapname on path​. rmsnap path snapname  Delete snapshot called snapname on path​. rmfile path  Delete/unlink path​. writefile sizeinmb blocksize  Create a file, named after our client id, that is sizeinmb MB by writing blocksize chunks. readfile sizeinmb blocksize  Read file, named after our client id, that is sizeinmb MB by writing blocksize chunks. rw sizeinmb blocksize  Write file, then read it back, as above. makedirs numsubdirs numfiles depth  Create a hierarchy of directories that is depth levels deep. Give each directory numsubdirs subdirectories and numfiles files. walk  Recursively walk the file system (like find).

AVAILABILITYceph−syn 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 ALSOceph(8), ceph−fuse(8)

COPYRIGHT2010-2021, Inktank Storage, Inc. and contributors. Licensed under Creative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
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