Provided by: ceph-common_0.41-1ubuntu2_amd64 bug


       rados - rados object storage utility


       rados [ -m monaddr ] [ mkpool | rmpool foo ] [ -p | --pool
       pool ] [ -s | --snap snap ] [ -i infile ] [ -o outfile ]
       command ...


       rados is a utility for interacting with a Ceph object storage cluster (RADOS), part of the
       Ceph distributed file system.


       -p pool, --pool pool
              Interact with the given pool. Required by most commands.

       -s snap, --snap snap
              Read from the given pool snapshot. Valid for all pool-specific read operations.

       -i infile
              will specify an input file to be passed along as a payload with the command to  the
              monitor cluster. This is only used for specific monitor commands.

       -o outfile
              will  write  any payload returned by the monitor cluster with its reply to outfile.
              Only specific monitor commands (e.g. osd getmap) return a payload.

       -c ceph.conf, --conf=ceph.conf
              Use ceph.conf configuration file instead  of  the  default  /etc/ceph/ceph.conf  to
              determine monitor addresses during startup.

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


              List object pools

       df     Show  utilization  statistics, including disk usage (bytes) and object counts, over
              the entire system and broken down by pool.

       mkpool foo
              Create a pool with name foo.

       rmpool foo
              Delete the pool foo (and all its data)


       get name outfile
              Read object name from the cluster and write it to outfile.

       put name infile
              Write object name to the cluster with contents from infile.

       rm name
              Remove object name.

       ls outfile
              List objects in given pool and write to outfile.

       lssnap List snapshots for given pool.

       mksnap foo
              Create pool snapshot named foo.

       rmsnap foo
              Remove pool snapshot names foo.

       bench seconds mode [ -b objsize ] [ -t threads ]
              Benchmark for seconds. The mode can be write or read. The default object size is  4
              KB, and the default number of simulated threads (parallel writes) is 16.


       To view cluster utilization:

       rados df

       To get a list object in pool foo sent to stdout:

       rados -p foo ls -

       To write an object:

       rados -p foo put myobject blah.txt

       To create a snapshot:

       rados -p foo mksnap mysnap

       To delete the object:

       rados -p foo rm myobject

       To read a previously snapshotted version of an object:

       rados -p foo -s mysnap get myobject blah.txt.old


       rados  is  part  of  the  Ceph  distributed  file system. Please refer to the Ceph wiki at for more information.




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