Difference between revisions of "LSDF Online Storage rdata"

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#REDIRECT [[:Category:LSDF_Online_Storage|HPC]]
<H1> Access to the Filesystem LSDF Online Storage from HPC-Cluster</H1>
 
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<!--http://wiki.scc.kit.edu/lsdf/index.php/LSDF_Online_Storage_rdata-->
 
Users of the filesystem LSDF Online Storage can furthermore transfer data to '''bwUniCluster''' and '''ForHLR''' via the tool '''rdata'''. Therefore the environment variables '''$LSDF''', '''$LSDFHOME''' and '''$LSDFPROJECTS''' are set.
 
 
The command rdata executes the filesystem operations on special "data mover" nodes and distributes the load.
 
 
'''Examples:'''
 
<pre>
 
>rdata "ls $LSDFPROJECTS"
 
>rdata "ls $LSDFHOME/*.c"
 
>rdata "cp foo $LSDFPROJECTS/ProjectPath/"
 
or
 
>rdata
 
> cp -a $WORK/path $LSDFPROJECTS/ProjectPath/“
 
</pre>
 
The command
 
<pre>
 
>man rdata
 
</pre>
 
shows how to use the command rdata.
 
<pre>
 
rdata(1) Cluster Commands rdata(1)
 
 
NAME
 
rdata - File operations are executed on a data mover node of the cluster
 
 
SYNOPSIS
 
rdata [ COMMAND ]
 
 
DESCRIPTION
 
The program executes the specified command (with arguments) on a data mover node. As remote host, a host with the lowest load is selected.
 
 
Interactive mode: If rdata is invoked without arguments, rdata reads line by line from standard input (like a restricted shell); at EOF rdata will be ended.
 
 
COMMANDS
 
The following commands are allowed in COMMAND of rdata:
 
 
cp rm mv ls mkdir rmdir pwd echo rsync Execution of the corresponding system command.
 
 
help Output of a short help text.
 
 
cd Changing the directory.
 
 
quit exit Termination of rdata.
 
 
ENVIRONMENT
 
The following user specific environment variables are available with rdata:
 
 
$HOME home directory
 
 
$WORK work directory
 
 
$UC1WORK uc1 work directory
 
 
$PROJECT fh1 project directory
 
 
$BWFILESTORAGE $BWFS bwFileStorage directory
 
 
$LSDF LSDF for Data Intensive Science - LSDF Path
 
 
$LSDFPROJECTS LSDF for Data Intensive Science - Project Directory
 
 
$LSDFHOME LSDF for Data Intensive Science - LSDF Home Directory
 
 
EXAMPLES
 
rdata
 
 
rdata 'ls $BWFILESTORAGE/*.c'
 
 
rdata 'cp $WORK/foo $BWFILESTORAGE'
 
 
RETURNCODE
 
rdata returns the exit status of the last command or 127 when the last command was not found.
 
 
remote-fs-utils April 2013
 
</pre>
 
 
<hr>
 
<hr>
 
<br>
 
<br>

Revision as of 14:26, 19 December 2019