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.TH "CMDS" "8" "September 09, 2011" "dev" "Ceph"
.SH NAME
cmds \- ceph metadata server daemon
.
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.SH SYNOPSIS
.nf
\fBcmds\fP \-i \fIname\fP [[ \-\-hot\-standby [\fIrank\fP] ]|[\-\-journal_check \fIrank\fP]]
.fi
.sp
.SH DESCRIPTION
.sp
\fBcmds\fP is the metadata server daemon for the Ceph distributed file
system. One or more instances of cmds collectively manage the file
system namespace, coordinating access to the shared OSD cluster.
.sp
Each cmds daemon instance should have a unique name. The name is used
to identify daemon instances in the ceph.conf.
.sp
Once the daemon has started, the monitor cluster will normally assign
it a logical rank, or put it in a standby pool to take over for
another daemon that crashes. Some of the specified options can cause
other behaviors.
.sp
If you specify hot\-standby or journal\-check, you must either specify
the rank on the command line, or specify one of the
mds_standby_for_[rank|name] parameters in the config. The command
line specification overrides the config, and specifying the rank
overrides specifying the name.
.SH OPTIONS
.INDENT 0.0
.TP
.B \-f, \-\-foreground
Foreground: do not daemonize after startup (run in foreground). Do
not generate a pid file. Useful when run via \fBcrun\fP(8).
.UNINDENT
.INDENT 0.0
.TP
.B \-d
Debug mode: like \fB\-f\fP, but also send all log output to stderr.
.UNINDENT
.INDENT 0.0
.TP
.B \-c ceph.conf, \-\-conf=ceph.conf
Use \fIceph.conf\fP configuration file instead of the default
\fB/etc/ceph/ceph.conf\fP to determine monitor addresses during
startup.
.UNINDENT
.INDENT 0.0
.TP
.B \-m monaddress[:port]
Connect to specified monitor (instead of looking through
\fBceph.conf\fP).
.UNINDENT
.SH AVAILABILITY
.sp
\fBcmon\fP is part of the Ceph distributed file system. Please refer to the Ceph wiki at
\fI\%http://ceph.newdream.net/wiki\fP for more information.
.SH SEE ALSO
.sp
\fBceph\fP(8),
\fBcmon\fP(8),
\fBcosd\fP(8)
.SH COPYRIGHT
2011, New Dream Network
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