Provided by: ceph_10.1.2-0ubuntu1_amd64 bug


       ceph-osd - ceph object storage daemon


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


       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).


       -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.

       --setuser userorgid
              Set  uid  after  starting.  If a username is specified, the user
              record is looked up to get a uid and a gid, and the gid is  also
              set as well, unless --setgroup is also specified.

       --setgroup grouporgid
              Set  gid after starting.  If a group name is specified the group
              record is looked up to get a gid.

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

       --osd-journal journal
              Journal updates to journal.

       --mkfs Create an empty object repository.  This  also  initializes  the
              journal (if one is defined).

              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).

              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   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.

              Print the cluster fsid (uuid) and exit.

              Print the OSD's fsid and exit.  The OSD's uuid is  generated  at
              --mkfs  time and is thus unique to a particular instantiation of
              this OSD.

              Print the journal's uuid.  The journal fsid is set to match  the
              OSD fsid at --mkfs time.

       -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-osd   is   part   of  Ceph,  a  massively  scalable,  open-source,
       distributed storage system. Please refer to the Ceph  documentation  at for more information.


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


       2010-2014,  Inktank  Storage,  Inc.  and  contributors.  Licensed under
       Creative Commons BY-SA