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diff --git a/src/ceph/doc/man/8/rados.rst b/src/ceph/doc/man/8/rados.rst new file mode 100644 index 0000000..9490105 --- /dev/null +++ b/src/ceph/doc/man/8/rados.rst @@ -0,0 +1,223 @@ +:orphan: + +======================================= + rados -- rados object storage utility +======================================= + +.. program:: rados + +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 storage system. + + +Options +======= + +.. option:: -p pool, --pool pool + + Interact with the given pool. Required by most commands. + +.. option:: -s snap, --snap snap + + Read from the given pool snapshot. Valid for all pool-specific read operations. + +.. option:: -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. + +.. option:: -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. + +.. option:: -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. + +.. option:: -m monaddress[:port] + + Connect to specified monitor (instead of looking through ceph.conf). + +.. option:: -b block_size + + Set the block size for put/get/append ops and for write benchmarking. + +.. option:: --striper + + Uses the striping API of rados rather than the default one. + Available for stat, get, put, append, truncate, rm, ls and all xattr related operation + + +Global commands +=============== + +:command:`lspools` + List object pools + +:command:`df` + Show utilization statistics, including disk usage (bytes) and object + counts, over the entire system and broken down by pool. + +:command:`mkpool` *foo* + Create a pool with name foo. + +:command:`rmpool` *foo* [ *foo* --yes-i-really-really-mean-it ] + Delete the pool foo (and all its data). + +:command:`list-inconsistent-pg` *pool* + List inconsistent PGs in given pool. + +:command:`list-inconsistent-obj` *pgid* + List inconsistent objects in given PG. + +:command:`list-inconsistent-snapset` *pgid* + List inconsistent snapsets in given PG. + +Pool specific commands +====================== + +:command:`get` *name* *outfile* + Read object name from the cluster and write it to outfile. + +:command:`put` *name* *infile* [--offset offset] + Write object name with start offset (default:0) to the cluster with contents from infile. + +:command:`append` *name* *infile* + Append object name to the cluster with contents from infile. + +:command:`rm` *name* + Remove object name. + +:command:`listwatchers` *name* + List the watchers of object name. + +:command:`ls` *outfile* + List objects in given pool and write to outfile. + +:command:`lssnap` + List snapshots for given pool. + +:command:`clonedata` *srcname* *dstname* --object-locator *key* + Clone object byte data from *srcname* to *dstname*. Both objects must be stored with the locator key *key* (usually either *srcname* or *dstname*). Object attributes and omap keys are not copied or cloned. + +:command:`mksnap` *foo* + Create pool snapshot named *foo*. + +:command:`rmsnap` *foo* + Remove pool snapshot named *foo*. + +:command:`bench` *seconds* *mode* [ -b *objsize* ] [ -t *threads* ] + Benchmark for *seconds*. The mode can be *write*, *seq*, or + *rand*. *seq* and *rand* are read benchmarks, either + sequential or random. Before running one of the reading benchmarks, + run a write benchmark with the *--no-cleanup* option. The default + object size is 4 MB, and the default number of simulated threads + (parallel writes) is 16. The *--run-name <label>* option is useful + for benchmarking a workload test from multiple clients. The *<label>* + is an arbitrary object name. It is "benchmark_last_metadata" by + default, and is used as the underlying object name for "read" and + "write" ops. + Note: -b *objsize* option is valid only in *write* mode. + Note: *write* and *seq* must be run on the same host otherwise the + objects created by *write* will have names that will fail *seq*. + +:command:`cleanup` [ --run-name *run_name* ] [ --prefix *prefix* ] + Clean up a previous benchmark operation. + Note: the default run-name is "benchmark_last_metadata" + +:command:`listxattr` *name* + List all extended attributes of an object. + +:command:`getxattr` *name* *attr* + Dump the extended attribute value of *attr* of an object. + +:command:`setxattr` *name* *attr* *value* + Set the value of *attr* in the extended attributes of an object. + +:command:`rmxattr` *name* *attr* + Remove *attr* from the extended attributes of an object. + +:command:`listomapkeys` *name* + List all the keys stored in the object map of object name. + +:command:`listomapvals` *name* + List all key/value pairs stored in the object map of object name. + The values are dumped in hexadecimal. + +:command:`getomapval` [ --omap-key-file *file* ] *name* *key* [ *out-file* ] + Dump the hexadecimal value of key in the object map of object name. + If the optional *out-file* argument is not provided, the value will be + written to standard output. + +:command:`setomapval` [ --omap-key-file *file* ] *name* *key* [ *value* ] + Set the value of key in the object map of object name. If the optional + *value* argument is not provided, the value will be read from standard + input. + +:command:`rmomapkey` [ --omap-key-file *file* ] *name* *key* + Remove key from the object map of object name. + +:command:`getomapheader` *name* + Dump the hexadecimal value of the object map header of object name. + +:command:`setomapheader` *name* *value* + Set the value of the object map header of object name. + +Examples +======== + +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 + +To list inconsistent objects in PG 0.6:: + + rados list-inconsistent-obj 0.6 --format=json-pretty + + +Availability +============ + +**rados** is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to +the Ceph documentation at http://ceph.com/docs for more information. + + +See also +======== + +:doc:`ceph <ceph>`\(8) |