xrdcp man page

xrdcp — copy files

Synopsis

xrdcp [options] source destination

options: [--cksum args] [--debug lvl]
[--coerce] [--force] [--help] [--license]
[--nopbar] [--posc] [--proxy ipaddr:port]
[--recursive] [--retry time] [--server]
[--silent] [--sources num] [--streams num]
[--tpc first|only] [--verbose] [--version]
[--xrate rate]

legacy options: [-adler] [-DSparm string] [-DIparm number]
[-md5] [-np] [-ODcgi] [-OScgi] [-x]

Description

The xrdcp utility copies one or more files from one location to another. The data source and destination may be a local or remote file or directory. Additionally, the data source may also reside on multiple servers.

Options

-C | --cksum type[:value|print|source]
obtains the checksum of type (i.e. adler32, crc32, or md5) from the source, computes the checksum at the destination, and verifies that they are the same. If a value is specified, it is used as the source checksum. When print is specified, the checksum at the destination is printed but is not verified.
-d | --debug lvl
debug level: 1 (low), 2 (medium), 3 (high)
-F | --coerce
ignores locking semantics on the destination file. This option may lead to file corruption if not properly used.
-f | --force
re-creates a file if it is already present.
-h | --help
displays usage information.
-H | --license
displays license terms and conditions.
-N | --nopbar
does not display the progress bar.
-P | --posc
requests POSC (persist-on-successful-close) processing to create a new file. Files are automatically deleted should they not be successfully closed.
-D | --proxy proxyaddr:proxyport

[NOT YET IMPLEMENTED]

use proxyaddr:proxyport as a SOCKS4 proxy. Only numerical addresses are supported.

-r | --recursive
recursively copy all files starting at the given source directory. This option is only supported for local files.
--server
runs as if in a server environment. Used only for server-side third party copy support.
-s | --silent
neither produces summary information nor displays the progress bar.
-y | --sources num

[NOT YET IMPLEMENTED]

uses up to num sources to copy the file.

-S | --streams num
uses num additional parallel streams to do the transfer. The maximum value is 15. The default is 0 (i.e., use only the main stream).
--tpc first|only
copies the file from remote server to remote server using third-party-copy protocol (i.e., data flows from server to server). The source and destination servers must support third party copies. Additional security restrictions may apply and may cause the copy to fail if they cannot be satisfied. Argument 'first' tries tpc and if it fails, does a normal copy; while 'only' fails the copy unless tpc succeeds.
-v | --verbose
displays summary output.
-V | -version
displays version information and immediately exits.
-X | --xrate rate

[NOT YET IMPLEMENTED]

limits the copy speed to the specified rate. The rate may be qualified with the letter k, m, or g to indicate kilo, mega, or giga bytes, respectively. The option only applies when the source or destination is local.

Legacy Options

Legacy options are provided for backward compatability. These are now deprecated and should be avoided. -adler

equivalent to "--cksum adler32:source".

-DIpname numberval

set the internal parameter pname with the numeric value numberval.

-DSpname stringval

set the internal parameter pname with the string value stringval.

-md5

equivalent to "--cksum md5:source".

-np

equivalent to "--nopbar".

-ODcgi

add cgi information cgi to any destination xrootd URL. You should specify the opaque information directly on the destination URL.

-OScgi

add cgi information cgi to any source xrootd URL.

-x

equivalent to "--sources 12".

Operands

source

a dash (i.e. -) indicating stanard in, a local file, a local directory name suffixed by /, or an xrootd URL in the form of

xroot://[user@]host[:port]/absolutepath

The absolutepath can be a directory.

destination

a dash (i.e. -) indicating stanard out, a local file, a local directory name suffixed by /, or an xrootd URL in the form

xroot://[user@]host[:port]/absolutepath

The absolutepath can be a directory.

Environment

The following environment variables are supported. They apply to xrdfs and any other application using the libXrdCl library, unless specified otherwise. The text in the brackets is a name of the corresponding xrdcp commandline parameter.

XRD_LOGLEVEL

Detemines the amout of diagnostics that should be printed. Valid values are: Dump, Debug, Info, Warning, and Error.

XRD_LOGFILE

If set, the diagnostics will be printed to the specified file instead of stderr.

XRD_LOGMASK

Determines which diagnostics topics should be printed at all levels. It's a "|" separated list of topics. The first element may be "All" in which case all the topics are enabled and the subsequent elements may turn them off, or "None" in which case all the topics are disabled and the subsequent flags may turn them on. If the topic name is prefixed with "^", then it means that the topic should be disabled. If the topic name is not prefixed, then it means that the topic should be enabled.

The log mask may as well be handled for each diagnostic level separately by setting one or more of the following variables: XRD_LOGMASK_ERROR, XRD_LOGMASK_WARNING, XRD_LOGMASK_INFO, XRD_LOGMASK_DEBUG, and XRD_LOGMASK_DUMP. The default for each level is "All", except for the Dump level, where the default is "All|^PollerMsg". This means that, at the Dump level, all the topics but "PollerMsg" are enabled.

Available topics: AppMsg, UtilityMsg, FileMsg, PollerMsg, PostMasterMsg, XRootDTransportMsg, TaskMgrMsg, XRootDMsg, FileSystemMsg, AsyncSockMsg

XRD_PARALLELEVTLOOP

The number of event loops.

XRD_READRECOVERY

Determines if read recovery should be enabled or disabled (enabled by default).

XRD_WRITERECOVERY

Determines if write recovery should be enabled or disabled (enabled by default).

XRD_CONNECTIONWINDOW (-DIConnectionWindow)

A time window for the connection establishment. A connection failure is declared if the connection is not established within the time window. If a connection failure happens earlier then another connection attempt will only be made at the beginning of the next window.

XRD_CONNECTIONRETRY (-DIConnectionRetry)

Number of connection attempts that should be made (number of available connection windows) before declaring a permanent failure.

XRD_REQUESTTIMEOUT (-DIRequestTimeout)

Default value for the time after which an error is declared if it was impossible to get a response to a request.

XRD_STREAMTIMEOUT (-DIStreamTimeout)

Default value for the time after which a connection error is declared (and a recovery attempted) if there are unfulfilled requests and there is no socket activity or a registered wait timeout.

XRD_SUBSTREAMSPERCHANNEL (-DISubStreamsPerChannel)

Number of streams per session.

XRD_TIMEOUTRESOLUTION (-DITimeoutResolution)

Resolution for the timeout events. Ie. timeout events will be processed only every XRD_TIMEOUTRESOLUTION seconds.

XRD_STREAMERRORWINDOW (-DIStreamErrorWindow)

Time after which the permanent failure flags are cleared out and a new connection may be attempted if needed.

XRD_RUNFORKHANDLER (-DIRunForkHandler)

Determines whether the fork handlers should be enabled, making the API fork safe.

XRD_REDIRECTLIMIT (-DIRedirectLimit)

Maximum number of allowed redirections.

XRD_POLLERPREFERENCE (-DSPollerPreference)

A comma separated list of poller implementations in order of preference. The default is: built-in.

XRD_CLIENTMONITOR (-DSClientMonitor)

Path to the client monitor library.

XRD_CLIENTMONITORPARAM (-DSClientMonitorParam)

Additional optional parameters that will be passed to the monitoring object on initialization.

XRD_WORKERTHREADS (-DIWorkerThreads)

Number of threads processing user callbacks.

XRD_CPPARALLELCHUNKS (-DICPParallelChunks)

Maximum number of asynchronous requests being processed by the xrdcp command at any given time.

XRD_CPCHUNKSIZE (-DICPChunkSize)

Size of a single data chunk handled by xrdcp.

XRD_NETWORKSTACK (-DSNetworkStack)

The network stack that the client should use to connect to the server. Possible values are:

IPAuto - automatically detect which IP stack to use

IPAll - use IPv6 stack (AF_INET6 sockets) and both IPv6 and IPv4 (mapped to IPv6) addresses

IPv6 - use only IPv6 stack and addresses

IPv4 - use only IPv4 stack (AF_INET sockets) and addresses

IPv4Mapped6 - use IPv6 stack and mapped IPv4 addresses

XRD_DATASERVERTTL (-DIDataServerTTL)

Time period after which an idle connection to a data server should be closed.

XRD_LOADBALANCERTTL (-DILoadBalancerTTL)

Time period after which an idle connection to a manager or a load balancer should be closed.

XRD_APPNAME (-DSAppName)

Override the application name reported to the server.

XRD_PLUGINCONFDIR

A custom location containing client plug-in config files.

XRD_PLUGIN

A default client plug-in to be used.

XRD_CPINITTIMEOUT (-DICPInitTimeout)

Maximum time allowed for the copy process to initialize, ie. open the source and destination files.

XRD_CPTPCTIMEOUT (-DICPTPCTimeout)

Maximum time allowed for a third-party copy operation to finish.

XRD_TCPKEEPALIVE (-DITCPKeepAlive)

Enable/Disable the TCP keep alive functionality

XRD_TCPKEEPALIVETIME (-DITCPKeepAliveTime)

Time between last data packet sent and the first keepalive probe (Linux only)

XRD_TCPKEEPALIVEINTERVAL (-DITCPKeepAliveInterval)

Interval between subsequent keepalive probes (Linux only)

XRD_TCPKEEPALIVEPROBES (-DITCPKeepProbes)

Number of unacknowledged probes before considering the connection dead (Linux only)

XRD_METALINKPROCESSING

Enable/Disable Metalink processing (enabled by default)

XRD_LOCALMETALINKFILE

Enable/Disable local Metalink file processing (by convention the following URL schema has to be used: root://localfile//path/filename.meta4)

XRD_GLFNREDIRECTOR

The redirector will be used as a last resort if the GLFN tag is specified in a Metalink file.

Notes

Documentation for all components associated with xrdcp can be found at http://xrootd.org/docs.html

Diagnostics

Errors yield an error message and a non-zero exit status.

License

LGPL

Support Level

The xrdcp command is supported by the xrootd collaboration. Contact information can be found at:

Referenced By

xrdfs(1).

v4.4.1