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Support use of xrootd by HEP experiments


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Enrica Antonioli <[log in to unmask]>
16 Nov 2004 14:52:13 +0100Tue, 16 Nov 2004 14:52:13 +0100
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Hi All,

I won't be able to attend the meeting, so I post the state of CNAF farm now.

 >      o CNAF - Enrica
 >         o outstanding problems

For the moment we have no problems. The olbd.wait directive problems 
seems to be solved.
We have a procedure (in crontab) that restarts xrootd/olbd if they 
crash. This script sends an email of notification for each restart.

 >         o xrootd on SAN servers?

Xrootd is running on SAN servers without problems.


Peter Elmer wrote:
> Hi All,
>   The next meeting on xrootd development, testing, deployment and monitoring
> will be Tuesday, 16 November, 2004 at 10:15 CA, 12:15 FNAL, 19:15 Europe and 
> 18:15 UK. The location at SLAC is SCS conference room B.
>   The connection info for this meeting is:
>    phone:     +1-510-665-5437
>    passcode:  4465
>  Agenda:
>    o problem list
>      o http://xrootd.slac.stanford.edu/problems.html
>      o outstanding mps problems?
>      o other problmes I forgot to put on the list?
>    o New development/features
>       o status of posix-compatible client
>       o status of xrootd-based buffer (being tested for skimming in BaBar)
>       o asynchronous I/O
>           o TThread/TSocket problems when using TXNetFile
>       o proxy support
>       o server side monitoring - Jacek
>       o client side monitoring support
>       o unsolicited requests
>       o administrative interface - Jacek/Artem
>       o bytes/read printout as file is closed?
>       o updates needed by Castor people
>       o SRM
>    o Status of summary web pages for BaBar file data access - Tofigh
>    o Sites
>      o Example configurations
>      o automated restarts of xrootd/olbd (and saving core files!)
>      o getting rid of feature in BaBar KanAccess.cfg that allows "localroot"
>        to be specified there
>      o SLAC
>         o olb03/olb04/kanolb-a renaming (arrghh!)
>      o Cornell
>         o current experiences from xrootd testing?
>      o Padova - Fulvio/Guglielmo
>         o problems reported by Antonio:
>           http://babar-hn.slac.stanford.edu:5090/HyperNews/get/KanSOS/393.html
>         o What are plans in Padova?
>      o CNAF - Enrica
>         o outstanding problems
>         o xrootd on SAN servers?
>      o RAL - Chris/Manny
>         o status of debugging occasional olbd crash?
>         o new disk space?
>         o import of skims
>         o rpm structure (libstdc++, config files)
>         o cleaning up classic Kanga data
>         o moving to latest version and cleanup of config files?
>      o In2p3 - Jean-Yves
>         o status
>      o FZK - Rolf
>         o status of first tests
>    o ganglia/monitoring of kanNNN servers at SLAC - Yemi
>       o adding back xrootd metrics
>       o metrics for staging?
>       o monitoring of scratch area, etc.
>       o monitoring of xrootd versions and alarms when they fail the "Sesame
>         Street test" (Should be possible after yesterday's restart)
>       o monitoring of total BaBar data (/store/PR, /store/SP, /store/SPskims,
>         /store/PRskims, /store/users, /store/awg), #files and data volume
>       o Updates to presentation
>       o renaming of servers during/after shutdown (arrghh!)
>       o alarms?
>       o monitoring of #file descriptors/TCP connections, etc.
>    o xrootd procedures
>       o restart of servers (deployment of new versions)
>       o problems with particular data servers
>       o adding a new server
>   I have almost certainly forgotten some things, so please feel free to bring
> anything important up during the meeting.
>                                    Pete
> -------------------------------------------------------------------------
> Peter Elmer     E-mail: [log in to unmask]      Phone: +41 (22) 767-4644
> Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland
> -------------------------------------------------------------------------