Provided by: ceph_0.41-1ubuntu2_amd64 bug

NAME

       ceph-osd - ceph object storage daemon

SYNOPSIS

       ceph-osd -i osdnum [ --osd-data datapath ] [ --osd-journal
       journal ] [ --mkfs ] [ --mkjournal ] [ --mkkey ]

DESCRIPTION

       ceph-osd  is  the  object  storage  daemon  for  the  Ceph  distributed file system. It is
       responsible for storing objects on a local file system and providing access to  them  over
       the network.

       The  datapath  argument should be a directory on a btrfs file system where the object data
       resides. The journal is optional, and is only useful performance-wise when it resides on a
       different disk than datapath with low latency (ideally, an NVRAM device).

OPTIONS

       -f, --foreground
              Foreground:  do  not daemonize after startup (run in foreground). Do not generate a
              pid file. Useful when run via ceph-run(8).

       -d     Debug mode: like -f, but also send all log output to stderr.

       --osd-data osddata
              Use object store at osddata.

       --osd-journal journal
              Journal updates to journal.

       --mkfs Create an empty object repository.  Normally  invoked  by  mkcephfs(8).  This  also
              initializes the journal (if one is defined).

       --mkkey
              Generate  a  new secret key. This is normally used in combination with --mkfs as it
              is more convenient than generating a key by hand with ceph-authtool(8).

       --mkjournal
              Create a new journal file to match an existing object repository.  This  is  useful
              if the journal device or file is wiped out due to a disk or file system failure.

       --flush-journal
              Flush  the journal to permanent store. This runs in the foreground so you know when
              it's completed. This can be useful if you want to resize the  journal  or  need  to
              otherwise destroy it: this guarantees you won't lose data.

       -c ceph.conf, --conf=ceph.conf
              Use  ceph.conf  configuration  file  instead of the default /etc/ceph/ceph.conf for
              runtime configuration options.

       -m monaddress[:port]
              Connect to specified monitor (instead of looking through ceph.conf).

AVAILABILITY

       ceph-osd is part of the Ceph distributed file system. Please refer to  the  Ceph  wiki  at
       http://ceph.newdream.net/wiki for more information.

SEE ALSO

       ceph(8), ceph-mds(8), ceph-mon(8), ceph-authtool(8)

COPYRIGHT

       2011, New Dream Network