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https://github.com/ceph/ceph
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98 lines
2.4 KiB
ReStructuredText
98 lines
2.4 KiB
ReStructuredText
===========================================
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ceph-syn -- ceph synthetic workload generator
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===========================================
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.. program:: ceph-syn
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Synopsis
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========
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| **ceph-syn** [ -m *monaddr*:*port* ] --syn *command* *...*
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Description
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===========
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**ceph-syn** is a simple synthetic workload generator for the Ceph
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distributed file system. It uses the userspace client library to
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generate simple workloads against a currently running file system. The
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file system need not be mounted via ceph-fuse(8) or the kernel client.
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One or more ``--syn`` command arguments specify the particular
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workload, as documented below.
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Options
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=======
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.. option:: -d
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Detach from console and daemonize after startup.
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.. option:: -c ceph.conf, --conf=ceph.conf
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Use *ceph.conf* configuration file instead of the default
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``/etc/ceph/ceph.conf`` to determine monitor addresses during
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startup.
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.. option:: -m monaddress[:port]
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Connect to specified monitor (instead of looking through
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``ceph.conf``).
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.. option:: --num_client num
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Run num different clients, each in a separate thread.
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.. option:: --syn workloadspec
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Run the given workload. May be specified as many times as
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needed. Workloads will normally run sequentially.
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Workloads
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=========
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Each workload should be preceded by ``--syn`` on the command
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line. This is not a complete list.
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:command:`mknap` *path* *snapname*
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Create a snapshot called *snapname* on *path*.
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:command:`rmsnap` *path* *snapname*
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Delete snapshot called *snapname* on *path*.
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:command:`rmfile` *path*
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Delete/unlink *path*.
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:command:`writefile` *sizeinmb* *blocksize*
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Create a file, named after our client id, that is *sizeinmb* MB by
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writing *blocksize* chunks.
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:command:`readfile` *sizeinmb* *blocksize*
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Read file, named after our client id, that is *sizeinmb* MB by
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writing *blocksize* chunks.
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:command:`rw` *sizeinmb* *blocksize*
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Write file, then read it back, as above.
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:command:`makedirs` *numsubdirs* *numfiles* *depth*
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Create a hierarchy of directories that is *depth* levels deep. Give
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each directory *numsubdirs* subdirectories and *numfiles* files.
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:command:`walk`
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Recursively walk the file system (like find).
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Availability
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============
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**ceph-syn** is part of the Ceph distributed file system. Please refer to
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the Ceph wiki at http://ceph.newdream.net/wiki for more information.
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See also
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========
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:doc:`ceph <ceph>`\(8),
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:doc:`ceph-fuse <ceph-fuse>`\(8)
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