mirror of
https://github.com/ceph/ceph
synced 2024-12-13 15:08:33 +00:00
eb3f65a697
Seeing as I was wondering what "rbytes" might be, I guess others might too... Signed-off-by: Sage Weil <sage.weil@dreamhost.com>
184 lines
3.3 KiB
Groff
184 lines
3.3 KiB
Groff
.TH MOUNT.CEPH 8
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.SH NAME
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mount.ceph \- mount a ceph file system
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.SH SYNOPSIS
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.B mount.ceph
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\fImonaddr1\fR[,\fImonaddr2\fR,...]:/[\fIsubdir\fR]
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\fIdir\fR
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[ \fB\-o \fIoptions\fR ]
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.SH DESCRIPTION
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.B mount.ceph
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is a simple helper for mounting the Ceph file system on a Linux host.
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The only real purpose it serves is to resolve monitor hostname(s) into
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IP addresses; the Linux kernel client component does most of the real
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work. In fact, it is possible to mount a Ceph file system without
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.B mount.ceph
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by specifying monitor address(es) by IP:
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.IP
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mount -t ceph 1.2.3.4:/ mountpoint
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.PP
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Each monitor address \fImonaddr\fR takes the form
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\fIhost\fR[:\fIport\fP]. If the port is not specified, the Ceph
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default of \fI6789\fP is assumed.
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.PP
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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
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a 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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.PP
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A subdirectory \fIsubdir\fP may be specified if a subset of the file system is to be
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mounted.
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.SH OPTIONS
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wsize
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.IP
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int, max write size. Default: none (writeback uses smaller of wsize and stripe unit)
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.PP
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rsize
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.IP
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int (bytes), max readahead, multiple of 1024, Default: 524288 (512*1024)
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.PP
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osdtimeout
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.IP
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int (seconds), Default: 60
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.PP
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osdkeepalivetimeout
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.IP
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int, Default: 5
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.PP
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mount_timeout
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.IP
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int (seconds), Default: 60
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.PP
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osd_idle_ttl
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.IP
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int (seconds), Default: 60
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.PP
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caps_wanted_delay_min
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.IP
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int, cap release delay, Default: 5
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.PP
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caps_wanted_delay_max
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.IP
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int, cap release delay, Default: 60
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.PP
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cap_release_safety
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.IP
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int, Default: calculated
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.PP
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readdir_max_entries
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.IP
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int, Default: 1024
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.PP
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readdir_max_bytes
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.IP
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int, Default: 524288 (512*1024)
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.PP
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write_congestion_kb
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.IP
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int (kb), max writeback in flight. scale with available memory. Default: calculated from available memory
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.PP
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snapdirname
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.IP
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string, set the name of the hidden snapdir. Default: .snap
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.PP
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name
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.IP
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string, used with authx, Default: guest
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.PP
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secret
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.IP
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string, used with authx
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.PP
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ip
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.IP
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my ip
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.PP
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noshare
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.IP
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create a new client instance, instead of sharing an existing instance of a client mounting the same cluster
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.PP
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dirstat
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.IP
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funky `cat dirname` for stats, Default: off
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.PP
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nodirstat
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.IP
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no funky `cat dirname` for stats
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.PP
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rbytes
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.IP
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Report the recursive size of the directory contents for st_size on directories. Default: on
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.PP
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norbytes
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.IP
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Do not report the recursive size of the directory contents for st_size on directories.
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.PP
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nocrc
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.IP
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no data crc on writes
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.PP
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noasyncreaddir
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.IP
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no dcache readdir
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.PP
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.SH EXAMPLES
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Mount the full file system:
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.IP
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mount.ceph monhost:/ /mnt/foo
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.PP
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If there are multiple monitors:
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.IP
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mount.ceph monhost1,monhost2,monhost3:/ /mnt/foo
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.PP
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If
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.BR cmon (8)
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is running on a non-standard port:
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.IP
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mount.ceph monhost1:7000,monhost2:7000,monhost3:7000:/ /mnt/foo
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.PP
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To mount only part of the namespace:
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.IP
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mount.ceph monhost1:/some/small/thing /mnt/thing
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.PP
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Assuming
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.BR mount.ceph (8)
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is installed properly, it should be automatically invoked by
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.BR mount (8)
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like so:
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.IP
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mount -t ceph monhost:/ /mnt/foo
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.SH AVAILABILITY
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.B mount.ceph
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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 cfuse (8),
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.BR ceph (8)
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