dCache Tier I meeting August 23, 2011

[part of a series of meetings]

Present

dCache.org(Tanja,Antje,Patrick,Tigran), IN2P3(Nicola), Sara(), Triumf(), BNL(), NDGF(), PIC(Gerard), GridKa(), Fermi(), CERN()

Agenda

Site reports

• Doris : eveything ok (via e-mail)
• IN2P3 Problem with staging and bringonline request. Repeatedly files get stuck when being recalled from tape by bringonline requests. It is only cured for a very short time (1 hour) if the SRM is restarted. However it seems to be fixed for longer if the Utility Domain is restarted which points to the PinManager. Nicola will send a 'thread-dump' next time it happens.
• IN2P3: Question on when a file is supposed to be precious and pinned. Lyon has a pool which is not supposed to flush to tape, but where files end up which are 'precious'.
• PIC: Gerard found that if there is no timeout specified for an I/O queue on a pool, the timeout is infinit, which causes ever growing queue sizes.

Support tickets for discussion

[Items are added here automagically]

DTNM

Proposed: same time, next week.