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127 lines
3.3 KiB
Groff
127 lines
3.3 KiB
Groff
.TH "COSD" "8" "September 09, 2011" "dev" "Ceph"
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.SH NAME
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cosd \- ceph object storage daemon
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.\" Man page generated from reStructeredText.
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.
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.SH SYNOPSIS
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.nf
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\fBcosd\fP \-i \fIosdnum\fP [ \-\-osd\-data \fIdatapath\fP ] [ \-\-osd\-journal
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\fIjournal\fP ] [ \-\-mkfs ] [ \-\-mkjournal ] [ \-\-mkkey ]
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.fi
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.sp
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.SH DESCRIPTION
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.sp
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\fBcosd\fP is the object storage daemon for the Ceph distributed file
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system. It is responsible for storing objects on a local file system
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and providing access to them over the network.
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.sp
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The datapath argument should be a directory on a btrfs file system
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where the object data resides. The journal is optional, and is only
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useful performance\-wise when it resides on a different disk than
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datapath with low latency (ideally, an NVRAM device).
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.SH OPTIONS
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.INDENT 0.0
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.TP
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.B \-f, \-\-foreground
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Foreground: do not daemonize after startup (run in foreground). Do
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not generate a pid file. Useful when run via \fBcrun\fP(8).
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-d
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Debug mode: like \fB\-f\fP, but also send all log output to stderr.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-osd\-data osddata
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Use object store at \fIosddata\fP.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-osd\-journal journal
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Journal updates to \fIjournal\fP.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-mkfs
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Create an empty object repository. Normally invoked by
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\fBmkcephfs\fP(8). This also initializes the journal
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(if one is defined).
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-mkkey
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Generate a new secret key. This is normally used in combination
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with \fB\-\-mkfs\fP as it is more convenient than generating a key by
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hand with \fBceph-authtool\fP(8).
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-mkjournal
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Create a new journal file to match an existing object repository.
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This is useful if the journal device or file is wiped out due to a
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disk or file system failure.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-flush\-journal
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Flush the journal to permanent store. This runs in the foreground
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so you know when it\(aqs completed. This can be useful if you want to
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resize the journal or need to otherwise destroy it: this guarantees
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you won\(aqt lose data.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-c ceph.conf, \-\-conf=ceph.conf
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Use \fIceph.conf\fP configuration file instead of the default
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\fB/etc/ceph/ceph.conf\fP for runtime configuration options.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-m monaddress[:port]
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Connect to specified monitor (instead of looking through
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\fBceph.conf\fP).
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.UNINDENT
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.SH AVAILABILITY
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.sp
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\fBcosd\fP is part of the Ceph distributed file system. Please refer to
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the Ceph wiki at \fI\%http://ceph.newdream.net/wiki\fP for more information.
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.SH SEE ALSO
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.sp
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\fBceph\fP(8),
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\fBcmds\fP(8),
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\fBcmon\fP(8),
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\fBceph-authtool\fP(8)
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.SH COPYRIGHT
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2011, New Dream Network
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.\" Generated by docutils manpage writer.
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.\"
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