Question

How can I know all the replicas stored on a given Storage Element ?

Answer

The "lfc_listreplicax" method allows to do this : it lists all the replica entries stored in the LFC for a given server.

It is available in :

  • the LFC C API,
  • the LFC Python interface,
  • the LFC Perl interface

See man lfc_listreplicax.

Warning

This method is based on the host field in the Cns_file_replica table.

But be aware that some VOs don't store the actual server machine name in the host field !

For instance, in its LFC central server, LHCb stores CERN_Castor instead of castorsrm.cern.ch...

Note

In the future, srmLs can be used too. But it has to be implemented for all Storage Element types first.

Help !

For further help, contact helpdesk@ggusNOSPAMPLEASE.org (remove the NONSPAM !). Your ROC will help you, and contact the appropriate experts if needed.

-- SophieLemaitre - 10 Aug 2006

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Topic revision: r2 - 2006-08-11 - SophieLemaitre
 
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