2009-03-10 21:39:54 +00:00
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.TH COSD 8
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.SH NAME
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cosd \- ceph object storage daemon
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.SH SYNOPSIS
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.B cosd
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\fIdatapath\fP
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[ \fB\-j\fI journal\fP ]
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[ \fB\-c\fI ceph.conf\fP ]
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[ \fB\-\-mkfs_for_osd\fI nodeid\fP ]
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.SH DESCRIPTION
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.B cosd
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is the object storage daemon for the Ceph distributed file system.
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It is responsible for storing objects on a local file system and
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providing access to them over the network.
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.PP
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The \fIdatapath\fP argument should be a directory on a btrfs file
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system where the object data resides. The \fIjournal\fP is optional,
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and is only useful performance-wise when it resides on a different
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disk than \fIdatapath\fP with low latency (ideally, an NVRAM device).
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.SH OPTIONS
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.TP
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2009-03-10 21:43:07 +00:00
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\fB\-D\fP
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Debug mode: do not daemonize after startup (run in foreground) and send log output
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to stdout.
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2009-03-10 21:39:54 +00:00
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.TP
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\fB\-f\fP
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2009-03-10 21:43:07 +00:00
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do not daemonize after startup (run in foreground), but log to the usual location.
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Useful when run via
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2009-03-10 21:39:54 +00:00
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.BR crun (8).
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.TP
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\fB\-j\fI journal\fP
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Journal updates to \fIjournal\fP.
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.TP
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\fB\-\-mkfs_for_osd\fI nodeid\fP
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Create an empty object repository for OSD number \fInodeid\fP. Normally
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invoked by
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.BR mkcephfs (8).
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.TP
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\fB\-c\fI ceph.conf\fR or \fB\-\-conf_file\fI ceph.conf\fP
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Use \fIceph.conf\fP configuration file instead of the default \fI/etc/ceph/ceph.conf\fP
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for runtime configuration options.
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.SH AVAILABILITY
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.B cosd
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is part of the Ceph distributed file system. Please refer to the Ceph wiki at
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http://ceph.newdream.net/wiki for more information.
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.SH SEE ALSO
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.BR ceph (8),
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.BR cmds (8),
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.BR cmon (8)
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