Difference: CernLbdDiskSpace (27 vs. 28)

Revision 282011-05-31 - RobLambert

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META TOPICPARENT name="CernLbd"

CernLbdDiskSpace

This is the LHCb CERN LBD group page describing locally available disk space

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    • the current size is 1TB, divided into 10 volumes of 100GB each
    • Keep your items inside a directory with your name, anything outside a named directory will be deleted.
    • mkdir /afs/cern.ch/project/lbcern/vol<X>/<username>
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    • Just your username, the same as you have it on afs, with no embellishments of addendums please
 
    • Use for collect large sets of outputs, that you can regenerate quickly, collections of small files, from many different grid jobs without the need to continuously clean your home directory.
    • to see the usage call fs listquota on each volume
    • The access list is maintained as a subgroup of z5, z5:cernlbd, to see if you are there call pts mem z5:cernlbd
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castorQuota.py Disk usage from you of all castor elements, including lhcbt3 (can be slow) /afs/cern.ch/project/lbcern/scripts/castorQuota.py
check30TB.py Disk usage of all users of lhcbt3 castor element (cached from the night before) /afs/cern.ch/project/lbcern/scripts/check30TB.py
  1. lhcbt3_cp.py avoids the need to set STAGE_SVCCLASS because it spawns a subshell
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  1. It's not a great idea to set STAGE_SVCCLASS, because if you forget to unset it, then every file you touch could go there, causing bookkeeping problems
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  1. It's not a great idea to set STAGE_SVCCLASS, because if you forget to unset it, then every file you touch could be staged into the non-standard service class, causing bookkeeping problems
 

-Use in Ganga

 
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