CERN Storage Tools

The tools presented on this page are useful for interacting with the storage systems available at CERN. In fact they should be generic enough to work elsewhere but they haven't been tested anywhere else. They reside in CVS but also require the IMProv and StageOut modules from PRODCOMMON/PRODAGENT.


This command is used to copy files. The syntax is;

cmsStage [options] <source> <destination>

The files specified can be LFNs or local file names (or a directory for destinations). An LFN is assumed to start /store (there is a temporary addition for /user to be an LFN pointing to the CERN CASTOR User area).


This command will provide ls like output. You can specify multiple LFNs and it accepts a few options, not all of which are supported by all storage elements types.


This can be used to remove files. You can specify mutliple LFNs/files. It can also be used to recursively remove directories (-r) but only if supported by the storage element (there is a special addition to support this on EOS at CERN and it will warn you that it is attempting to use it).


This can be used to remove empty directories. You can specify multiple directories. It takes the -p option to try to remove parent directories that are empty also (also not supported by all storage elements).


This command can be used to determine the PFN of an LFN. This can be useful to pass to ROOT, or other utilities which do not use the CMS Trivial File Catalog.

-- StephenJGowdy - 14-Jul-2012

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Topic revision: r1 - 2012-07-14 - StephenJGowdy
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