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|
:orphan:
===============================================
ceph-syn -- ceph synthetic workload generator
===============================================
.. program:: ceph-syn
Synopsis
========
| **ceph-syn** [ -m *monaddr*:*port* ] --syn *command* *...*
Description
===========
**ceph-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
=======
.. option:: -d
Detach from console and daemonize after startup.
.. option:: -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.
.. option:: -m monaddress[:port]
Connect to specified monitor (instead of looking through
``ceph.conf``).
.. option:: --num_client num
Run num different clients, each in a separate thread.
.. option:: --syn workloadspec
Run the given workload. May be specified as many times as
needed. Workloads will normally run sequentially.
Workloads
=========
Each workload should be preceded by ``--syn`` on the command
line. This is not a complete list.
:command:`mknap` *path* *snapname*
Create a snapshot called *snapname* on *path*.
:command:`rmsnap` *path* *snapname*
Delete snapshot called *snapname* on *path*.
:command:`rmfile` *path*
Delete/unlink *path*.
:command:`writefile` *sizeinmb* *blocksize*
Create a file, named after our client id, that is *sizeinmb* MB by
writing *blocksize* chunks.
:command:`readfile` *sizeinmb* *blocksize*
Read file, named after our client id, that is *sizeinmb* MB by
writing *blocksize* chunks.
:command:`rw` *sizeinmb* *blocksize*
Write file, then read it back, as above.
:command:`makedirs` *numsubdirs* *numfiles* *depth*
Create a hierarchy of directories that is *depth* levels deep. Give
each directory *numsubdirs* subdirectories and *numfiles* files.
:command:`walk`
Recursively walk the file system (like find).
Availability
============
**ceph-syn** is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to
the Ceph documentation at https://docs.ceph.com for more information.
See also
========
:doc:`ceph <ceph>`\(8),
:doc:`ceph-fuse <ceph-fuse>`\(8)
|
