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rados: rados object storage utility


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).


lspools 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 //ceph.newdream.net/wiki for more information.
ceph(8) RADOS(8)

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