Section: Maintenance Commands (8) Local index
rados - rados object storage utility
[ -m monaddr ]
[ mkpool | rmpool foo]
[ -p | --pool pool ]
[ -s | --snap snap ]
[ -i infile ]
[ -o outfile ]
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
Show utilization statistics, including disk usage (bytes) and object counts, over the entire system
and broken down by pool.
Create a pool with name foo.
Delete the pool foo (and all its data)
POOL SPECIFIC COMMANDS
- 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.
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:
To get a list object in pool fooFP 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
is part of the Ceph distributed file system. Please refer to the Ceph wiki at
http://ceph.newdream.net/wiki for more information.
- GLOBAL COMMANDS
- POOL SPECIFIC COMMANDS
- SEE ALSO
This document was created by
using the manual pages.
Time: 22:02:13 GMT, April 16, 2011