LSDF Online Storage rdata: Difference between revisions
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#REDIRECT [[LSDF_Online_Storage:_HPC#rdata]] |
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<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--> |
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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. |
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The command rdata executes the filesystem operations on special "data mover" nodes and distributes the load. |
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'''Examples:''' |
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<pre> |
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>rdata "ls $LSDFPROJECTS" |
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>rdata "ls $LSDFHOME/*.c" |
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>rdata "cp foo $LSDFPROJECTS/ProjectPath/" |
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or |
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>rdata |
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> cp -a $WORK/path $LSDFPROJECTS/ProjectPath/“ |
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</pre> |
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The command |
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<pre> |
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>man rdata |
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</pre> |
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shows how to use the command rdata. |
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<pre> |
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rdata(1) Cluster Commands rdata(1) |
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NAME |
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rdata - File operations are executed on a data mover node of the cluster |
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SYNOPSIS |
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rdata [ COMMAND ] |
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DESCRIPTION |
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The program executes the specified command (with arguments) on a data mover node. As remote host, a host with the lowest load is selected. |
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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. |
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COMMANDS |
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The following commands are allowed in COMMAND of rdata: |
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cp rm mv ls mkdir rmdir pwd echo rsync Execution of the corresponding system command. |
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help Output of a short help text. |
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cd Changing the directory. |
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quit exit Termination of rdata. |
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ENVIRONMENT |
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The following user specific environment variables are available with rdata: |
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$HOME home directory |
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$WORK work directory |
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$UC1WORK uc1 work directory |
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$PROJECT fh1 project directory |
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$BWFILESTORAGE $BWFS bwFileStorage directory |
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$LSDF LSDF for Data Intensive Science - LSDF Path |
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$LSDFPROJECTS LSDF for Data Intensive Science - Project Directory |
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$LSDFHOME LSDF for Data Intensive Science - LSDF Home Directory |
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EXAMPLES |
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rdata |
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rdata 'ls $BWFILESTORAGE/*.c' |
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rdata 'cp $WORK/foo $BWFILESTORAGE' |
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RETURNCODE |
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rdata returns the exit status of the last command or 127 when the last command was not found. |
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remote-fs-utils April 2013 |
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</pre> |
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<hr> |
<hr> |
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<br> |
<br> |
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