usage: rados [options] [commands]
POOL COMMANDS
   lspools                          list pools
   cppool <pool-name> <dest-pool>   copy content of a pool
   purge <pool-name> --yes-i-really-really-mean-it
                                    remove all objects from pool <pool-name> without removing the pool itself
   df                               show per-pool and total usage
   ls                               list objects in pool


POOL SNAP COMMANDS
   lssnap                           list snaps
   mksnap <snap-name>               create snap <snap-name>
   rmsnap <snap-name>               remove snap <snap-name>

OBJECT COMMANDS
   get <obj-name> <outfile> [--offset offset]
                                    fetch object with start offset (default:0)
   put <obj-name> <infile> [--offset offset]
                                    write object with start offset (default:0)
   append <obj-name> <infile>       append object
   truncate <obj-name> length       truncate object
   create <obj-name>                create object
   rm <obj-name> ... [--force-full] remove object(s), --force-full forces remove when cluster is full
   cp <obj-name> [target-obj]       copy object
   listxattr <obj-name>             list attrs of this object
   getxattr <obj-name> <attr>       get the <attr> attribute of this object
   setxattr <obj-name> attr val
   rmxattr <obj-name> attr
   stat <obj-name>                  stat the named object
   stat2 <obj-name>                 stat2 the named object (with high precision time)
   touch <obj-name> [timestamp]     change the named object modification time
   mapext <obj-name>
   rollback <obj-name> <snap-name>  roll back object to snap <snap-name>

   listsnaps <obj-name>             list the snapshots of this object
   bench <seconds> write|seq|rand [-t concurrent_operations] [--no-cleanup] [--run-name run_name] [--no-hints] [--reuse-bench]
                                    default is 16 concurrent IOs and 4 MB ops
                                    default is to clean up after write benchmark
                                    default run-name is 'benchmark_last_metadata'
                                    seconds can be numeral or 'max'
   cleanup [--run-name run_name] [--prefix prefix]
                                    clean up a previous benchmark operation
                                    default run-name is 'benchmark_last_metadata'
   load-gen [options]               generate load on the cluster
   listomapkeys <obj-name>          list the keys in the object map
   listomapvals <obj-name>          list the keys and vals in the object map
   getomapval <obj-name> <key> [file] show the value for the specified key
                                    in the object's object map
   setomapval <obj-name> <key> <val | --input-file file>
   rmomapkey <obj-name> <key>       remove key from the object map of <obj-name>
   clearomap <obj-name> [obj-name2 obj-name3...] clear all the omap keys for the specified objects
   getomapheader <obj-name> [file]  dump the hexadecimal value of the object map header of <obj-name>
   setomapheader <obj-name> <val | --input-file file>
                                    set the value of the object map header of <obj-name>
   watch <obj-name>                 add watcher on this object
   notify <obj-name> <message>      notify watcher of this object with message
   listwatchers <obj-name>          list the watchers of this object
   set-alloc-hint <obj-name> <expected-object-size> <expected-write-size>
                                    set allocation hint for an object
   set-redirect <object A> --target-pool <caspool> <target object A> [--with-reference]
                                    set redirect target
   set-chunk <object A> <offset> <length> --target-pool <caspool> <target object A> <taget-offset> [--with-reference]
                                    convert an object to chunked object
   tier-promote <obj-name>	     promote the object to the base tier
   unset-manifest <obj-name>	     unset redirect or chunked object
   tier-flush <obj-name>	     flush the chunked object
   tier-evict <obj-name>	     evict the chunked object

IMPORT AND EXPORT
   export [filename]
       Serialize pool contents to a file or standard out.
   import [--dry-run] [--no-overwrite] < filename | - >
       Load pool contents from a file or standard in

ADVISORY LOCKS
   lock list <obj-name>
       List all advisory locks on an object
   lock get <obj-name> <lock-name> [--lock-cookie locker-cookie] [--lock-tag locker-tag] [--lock-description locker-desc] [--lock-duration locker-dur] [--lock-type locker-type]
       Try to acquire a lock
   lock break <obj-name> <lock-name> <locker-name> [--lock-cookie locker-cookie]
       Try to break a lock acquired by another client
   lock info <obj-name> <lock-name>
       Show lock information
   options:
       --lock-tag                   Lock tag, all locks operation should use
                                    the same tag
       --lock-cookie                Locker cookie
       --lock-description           Description of lock
       --lock-duration              Lock duration (in seconds)
       --lock-type                  Lock type (shared, exclusive)

SCRUB AND REPAIR:
   list-inconsistent-pg <pool>      list inconsistent PGs in given pool
   list-inconsistent-obj <pgid>     list inconsistent objects in given PG
   list-inconsistent-snapset <pgid> list inconsistent snapsets in the given PG

CACHE POOLS: (for testing/development only)
   cache-flush <obj-name>           flush cache pool object (blocking)
   cache-try-flush <obj-name>       flush cache pool object (non-blocking)
   cache-evict <obj-name>           evict cache pool object
   cache-flush-evict-all            flush+evict all objects
   cache-try-flush-evict-all        try-flush+evict all objects

GLOBAL OPTIONS:
   --object-locator object_locator
        set object_locator for operation
   -p pool
   --pool=pool
        select given pool by name
   --target-pool=pool
        select target pool by name
   --pgid PG id
        select given PG id
   -f [--format plain|json|json-pretty]
   --format=[--format plain|json|json-pretty]
   -b op_size
        set the block size for put/get ops and for write benchmarking
   -O object_size
        set the object size for put/get ops and for write benchmarking
   --max-objects
        set the max number of objects for write benchmarking
   --obj-name-file file
        use the content of the specified file in place of <obj-name>
   --omap-read-start-after
        set the start_after parameter for OMAP list benchmarking
   --omap-read-filter-prefix
        set the filter_prefix parameter for OMAP list benchmarking
   --omap-read-max-return
        set the max number of entries for OMAP list benchmarking
   -s name
   --snap name
        select given snap name for (read) IO
   --input-file file
        use the content of the specified file in place of <val>
   --create
        create the pool or directory that was specified
   -N namespace
   --namespace=namespace
        specify the namespace to use for the object
   --all
        Use with ls to list objects in all namespaces
        Put in CEPH_ARGS environment variable to make this the default
   --default
        Use with ls to list objects in default namespace
        Takes precedence over --all in case --all is in environment
   --target-locator
        Use with cp to specify the locator of the new object
   --target-nspace
        Use with cp to specify the namespace of the new object
   --striper
        Use radostriper interface rather than pure rados
        Available for stat, get, put, truncate, rm, ls and
        all xattr related operations

BENCH OPTIONS:
   -t N
   --concurrent-ios=N
        Set number of concurrent I/O operations
   --show-time
        prefix output with date/time
   --no-verify
        do not verify contents of read objects
   --object | --write-object (deprecated)
        read or write contents to the objects
   --omap | --write-omap (deprecated)
        read or write contents to the omap
   --xattr | write-xattr (deprecated)
        read or write contents to the extended attributes

LOAD GEN OPTIONS:
   --num-objects                    total number of objects
   --min-object-size                min object size
   --max-object-size                max object size
   --min-op-len                     min io size of operations
   --max-op-len                     max io size of operations
   --max-ops                        max number of operations
   --max-backlog                    max backlog size
   --read-percent                   percent of operations that are read
   --target-throughput              target throughput (in bytes)
   --run-length                     total time (in seconds)
   --offset-align                   at what boundary to align random op offsets

CACHE POOLS OPTIONS:
   --with-clones                    include clones when doing flush or evict

OMAP OPTIONS:
    --omap-key-file file            read the omap key from a file

GENERIC OPTIONS:
  --conf/-c FILE    read configuration from the given configuration file
  --id ID           set ID portion of my name
  --name/-n TYPE.ID set name
  --cluster NAME    set cluster name (default: ceph)
  --setuser USER    set uid to user or uid (and gid to user's gid)
  --setgroup GROUP  set gid to group or gid
  --version         show version and quit