dCache Tier I meeting June 7, 2011

[part of a series of meetings]

Present

dCache.org(Tigran, Patrick, Paul, Antje), CC-IN2P3(Nicolas), Triumf(Simon), NDGF(Gerd)

Agenda

(see box on the other side)

Site reports

Triumf

Simon said everything is fine; nothing to report.

NDGF

Gerd reported that things are quite fine, nothing to report.

CC-IN2P3

Things are OK.

Nicolas reported that they have migrated all their instances to the latest version of dCache last week. This is working fine.

They also migrated their remaining PNFS instance to Chimera. There were some initial problems, but their site is now working fine.

Nicolas reported that they have updated their PostgreSQL servers based on feedback from Gerd and from reading the performance book. Their servers now have quite some load, but their dCache instance is now performing much better than before.

Nicolas asked about documentation for properties in dCache v1.9.12. He was looking at deploying 1.9.12 with IN2P3 install process and discovered that some properties seemed not to be supported any longer.

Paul described how there are two places where the properties are documented: the defaults file and the dCache Book. The defaults file should have an entry for each configurable property; the should also be a comment describing what are valid values and what are the effects of changing the property. The dCache Book should describe this too, but the current version may lag the default properties file.

Gerd added that dCache 1.9.12 should mention all properties, even those properties that we don't support any longer. The properties are annotated to describe whether they are supported.

Nicolas will write an email to support@… with a list of properties that seem not to be supported any longer. The dCache team will take care of checking this list and advise him on whether the properties are supported and, if not, how to adjust the install process.

GridKa

Doris reported via email:

Today in the morning we updated our dCache instance for LHCb and other 
non LHC experiments to 1.9.5-26. Since then we disabled 
*srmImplicitSpaceManagerEnabled and 
**SpaceManagerReserveSpaceForNonSRMTransfer*
in order to avoid LHCb beeing able to write files outside of any space 
tokens. The other experiments do not use space management and as such do 
not have any linkGroups anymore.

Support tickets for discussion

[Items are added here automagically]

DTNM

Same time, next week.