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207 lines
4.8 KiB
Groff
207 lines
4.8 KiB
Groff
.TH "MOUNT.CEPH" "8" "September 27, 2012" "dev" "Ceph"
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.SH NAME
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mount.ceph \- mount a ceph file system
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.\" Man page generated from reStructuredText.
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.
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.SH SYNOPSIS
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.nf
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\fBmount.ceph\fP \fImonaddr1\fP[,\fImonaddr2\fP,...]:/[\fIsubdir\fP] \fIdir\fP [
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\-o \fIoptions\fP ]
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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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\fBmount.ceph\fP is a simple helper for mounting the Ceph file system on
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a Linux host. It serves to resolve monitor hostname(s) into IP
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addresses and read authentication keys from disk; the Linux kernel
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client component does most of the real work. In fact, it is possible
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to mount a non\-authenticated Ceph file system without mount.ceph by
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specifying monitor address(es) by IP:
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.sp
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.nf
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.ft C
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mount \-t ceph 1.2.3.4:/ mountpoint
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.ft P
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.fi
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.sp
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Each monitor address monaddr takes the form host[:port]. If the port
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is not specified, the Ceph default of 6789 is assumed.
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.sp
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Multiple monitor addresses can be separated by commas. Only one
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responsible monitor is needed to successfully mount; the client will
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learn about all monitors from any responsive monitor. However, it is a
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good idea to specify more than one in case one happens to be down at
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the time of mount.
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.sp
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A subdirectory subdir may be specified if a subset of the file system
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is to be mounted.
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.sp
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Mount helper application conventions dictate that the first two
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options are device to be mounted and destination path. Options must be
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passed only after these fixed arguments.
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.SH OPTIONS
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.INDENT 0.0
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.TP
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.B \fBwsize\fP
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int, max write size. Default: none (writeback uses smaller of wsize
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and stripe unit)
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.TP
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.B \fBrsize\fP
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int (bytes), max readahead, multiple of 1024, Default: 524288
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(512*1024)
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.TP
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.B \fBosdtimeout\fP
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int (seconds), Default: 60
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.TP
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.B \fBosdkeepalivetimeout\fP
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int, Default: 5
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.TP
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.B \fBmount_timeout\fP
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int (seconds), Default: 60
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.TP
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.B \fBosd_idle_ttl\fP
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int (seconds), Default: 60
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.TP
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.B \fBcaps_wanted_delay_min\fP
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int, cap release delay, Default: 5
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.TP
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.B \fBcaps_wanted_delay_max\fP
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int, cap release delay, Default: 60
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.TP
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.B \fBcap_release_safety\fP
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int, Default: calculated
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.TP
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.B \fBreaddir_max_entries\fP
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int, Default: 1024
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.TP
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.B \fBreaddir_max_bytes\fP
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int, Default: 524288 (512*1024)
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.TP
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.B \fBwrite_congestion_kb\fP
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int (kb), max writeback in flight. scale with available
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memory. Default: calculated from available memory
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.TP
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.B \fBsnapdirname\fP
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string, set the name of the hidden snapdir. Default: .snap
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.TP
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.B \fBname\fP
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RADOS user to authenticate as when using cephx. Default: guest
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.TP
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.B \fBsecret\fP
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secret key for use with cephx. This option is insecure because it exposes
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the secret on the command line. To avoid this, use the secretfile option.
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.TP
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.B \fBsecretfile\fP
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path to file containing the secret key to use with cephx
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.TP
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.B \fBip\fP
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my ip
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.TP
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.B \fBnoshare\fP
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create a new client instance, instead of sharing an existing
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instance of a client mounting the same cluster
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.TP
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.B \fBdirstat\fP
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funky \fIcat dirname\fP for stats, Default: off
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.TP
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.B \fBnodirstat\fP
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no funky \fIcat dirname\fP for stats
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.TP
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.B \fBrbytes\fP
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Report the recursive size of the directory contents for st_size on
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directories. Default: on
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.TP
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.B \fBnorbytes\fP
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Do not report the recursive size of the directory contents for
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st_size on directories.
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.TP
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.B \fBnocrc\fP
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no data crc on writes
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.TP
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.B \fBnoasyncreaddir\fP
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no dcache readdir
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.UNINDENT
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.SH EXAMPLES
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.sp
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Mount the full file system:
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.sp
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.nf
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.ft C
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mount.ceph monhost:/ /mnt/foo
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.ft P
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.fi
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.sp
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If there are multiple monitors:
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.sp
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.nf
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.ft C
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mount.ceph monhost1,monhost2,monhost3:/ /mnt/foo
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.ft P
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.fi
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.sp
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If \fBceph\-mon\fP(8) is running on a non\-standard
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port:
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.sp
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.nf
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.ft C
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mount.ceph monhost1:7000,monhost2:7000,monhost3:7000:/ /mnt/foo
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.ft P
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.fi
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.sp
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To mount only part of the namespace:
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.sp
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.nf
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.ft C
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mount.ceph monhost1:/some/small/thing /mnt/thing
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.ft P
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.fi
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.sp
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Assuming mount.ceph(8) is installed properly, it should be
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automatically invoked by mount(8) like so:
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.sp
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.nf
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.ft C
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mount \-t ceph monhost:/ /mnt/foo
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.ft P
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.fi
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.SH AVAILABILITY
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.sp
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\fBmount.ceph\fP is part of the Ceph distributed file system. Please
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refer to the Ceph documentation at \fI\%http://ceph.com/docs\fP for more
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information.
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.SH SEE ALSO
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.sp
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\fBceph\-fuse\fP(8),
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\fBceph\fP(8)
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.SH COPYRIGHT
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2012, Inktank Storage, Inc.
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.\" Generated by docutils manpage writer.
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.
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