Brief notes from SRM Coordination meeting of Sep 17 2007
Present: J.Shiers (chair), H.Renshall (notes), J-P.Baud,
P.Fuhrman, G.Oleynik, T.Cass
Apologies: J.Gordon who sent in CASTOR report (attached at end).
JDS mentioned one point from the minutes of the last meeting that
most people thought that a 50% availability of developers for
consultancy was optimistic.
JDS said they had informed the LCG-LHCC Referees meeting of the draft
castor/dcache site upgrades schedule and this is now attached to this
meetings agenda. The referees are now in closed session.
GO said that FNAL needed an additional resiliency feature for the
dcache upgrade that is currently being worked on to make it more stable
and it was expected to be available for the scheduled upgrade.
JDS remarked that the referees noticed that the final (February 2008)
full deployment of SRM 2.2 is close/overlaps to the start of FDR
activities that intend to use it.
GO said that at this time it will be tough to resolve all the sites
SRM 2.2 problems immediately. PF followed that the later sites would
probably delay if the earlier sites were having serious problems.
GO thought that production testing at some sites should start now - there
are only 4 working weeks in the US between Thanksgiving and Xmas - and
this was generally agreed.
JDS then reported a question from the referees that would CCRC'08 be
restricted to sites that had the upgraded dcache? PF thought not as we
would have to support SRM 1 and 2 at sites for some time but this could
be discussed at the next GSSD.
JDS proposed the next meeting focus on experiment testing and status.
People are travelling next week so this will be in 2 weeks time unless
there is urgent need.
TNT raised some CASTOR issues that are stated in the attached report
from J.Gordon and the final arising point was for JDS to check if the
'changeSpaceForFiles' functionality is only required by CMS.
Harry Renshall
Email Input from J.Gordon:
Date: Mon, 24 Sep 2007 14:39:18 +0100
From: "Gordon, JC (John)" <J.C.Gordon@rl.ac.uk>
To: wlcg-srm-production-deployment@cern.ch
Subject: Castor SRM Progress
The CASTOR SRM interface was supposed to deliver the changeSpaceForFiles,
srmCopy & purgeFromSpace functions by the end of September. I would like to
signal now that this deadline will not be met. The status for these functions isas follows
a) srmCopy: the implementation is understood and the function could be delivered early
in October if it is really required on this timescale. However, we prefer
to deliver only in early November in order to allow time for a more elegant
implementation.
b) purgeFromSpace requires a Castor feature which has been added in version
2.1.4. The SRM function will become available with the general deployment of
Castor 2.1.4 (expected to be shortly after the end of CSA07).
c) More internal discussion is needed before we can start to implement
changeSpaceForFiles, but we expect to make this function available before the
end of the year.
John Gordon
