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RADOS

RADOS

Section: Maintenance Commands (8)
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NAME

rados - rados object storage utility  

SYNOPSIS

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

 

DESCRIPTION

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

OPTIONS

-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).
 

GLOBAL COMMANDS

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)
 

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.
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.
 

EXAMPLES

To view cluster utilization:
rados df

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

 

AVAILABILITY

rados 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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
GLOBAL COMMANDS
POOL SPECIFIC COMMANDS
EXAMPLES
AVAILABILITY
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 22:02:13 GMT, April 16, 2011