Attending: Jens, Brian, Govind, Mark, Robert, Steve, Ewan, Chris,
Elena, Pete, Matt, Alessandra, Dave, Sam.

Apologies: Wahid

0. B'ham problems - may be useful for sites to have the neighbour
hostnames in /etc/hosts.  Could not be done easily with very dynamic
services but as long as the DNS mapping doesn't change very often, it
should be useful.  (Of course you need a process for updating these
files when DNS _does_ change.)

There may be other problems; this remains to be seen.

1. OK, so what do we do for the EGI community forum?  Given that
GridPP is a joint organiser of the meeting, it behooves us to do
something...!  And the deadline is now fast approaching, papers Jan
14th, and posters 27th.  If GridPP has a booth, we could always
decorate the booth as well.

Suggestions: A retrospective summary; small VOs (Glasgow); an updated
Dave; an xroot/WebDAV experiences paper.

This is a community forum so all the user stuff could usefully be
published here, whereas the more hardcore physics and infrastructure
stuff can still go to CHEP and HEPiX.

The submission page is:
https://indico.egi.eu/indico/conferenceCFA.py?confId=1222

Perhaps this is the summary - and who will submit the abstract; I
assume we can adjust the set of authors depending on interest and
such, if needed - and I aslo assume they only want abstracts :-)

1. Small VOs (presentation) - Glasgow
2. Dave the dataset - (presentation) - Brian - Brian will check with
ATLAS how happy they are to release information and be mentioned;
3. WebDAV experiences - could also tie in with the small VOs? - Ewan
or Sam?
4. 

In addition, we could do a poster on the group itself - GridPP storage
and data management, like we used to do for IoP every year in March...

The themes are VREs, community platforms (=building infrastructure,
particularly internationally), cloud platforms, operational
services, and coordination and communication.

2. WebDAV - we can now read data with a browser, provided permissions
etc are OK.  One file at a time, though, and only reading.

If experiments are expecting WebDAV interfaces, sites will need to set
them up and test... ATLAS expected to use WebDAV to move (rename)
files when switching to RUCIO, so will need more than read only.

ASGC used WebDAV with DPM.

ATLAS plan to stop using RFIO, so perhaps DCAP will also follow, if
they can use another protocol internally instead?

Would be useful to have more information about and experiences with
clients that work with WebDAV, particularly for mounting WebDAV as a
filesystem.  In Windows, it didn't work, presumably due to the need to
present a certificate.  WebDAV can be set to unauthenticated in DPM,
but this is not recommended in general.

This may also be useful for "smaller" VOs, although they will most
likely still need to learn lcg-utils.

3. As for other useful things, we agreed it would not be useful to
have a "classic SE" based on xroot.  Standalone GridFTP endpoints are
useful for "small VOs" (down to individual users) that use
GlobusOnline; WebDAV may also be useful for this (but WebDAV does not
work with GO...!)  EOS provides a GridFTP endpoint.

Local users can use a standalone xroot; and of course ALICE are using
xroot heavily but they also have different middleware.  Setting up
xroot even with redirector is still easyish; Alessandra set it up in
less than an afternoon.

CMS showed diskless T3 in the US, with xroot redirector, but not
useful enough yet.  So we won't pursue this...

However, ATLAS have a dress rehearsal for xroot on the 21st, so we'll
need to make sure sites are ready/tested before then.

StoRM - http working; WebDAV expected "February"

4. May be useful to get snoplus back in, but if all their problems are
on the other side of the pond, maybe not much we can do.  Also, we
might get some of the others to come and talk to us... let's see what
comes out of the "small VO" paper.

5. AOB

T2K next week: Jon Perkin will join, and will present and discuss all
things T2K storage.  Jens away, though, for a meeting.


[09:59:30] Govind Songara on SL5 it says vidoe module not loaded... update your graphic card drvers
[10:14:52] Ewan Mac Mahon It's ANYONE, not anyone in the VO.
[10:15:03] Ewan Mac Mahon At the moment.
[10:15:43] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:15:44] System Message to user Govind Songara: SeeVogh has reduced the quality of your incoming video to optimize your performance.
[10:16:09] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:16:09] System Message to user Govind Songara: SeeVogh has turned off your incoming videos due to poor network performance.
[10:16:34] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:16:36] System Message to user Govind Songara: Koala will connect to another Panda to see if it improves
[10:17:10] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:17:10] System Message to user Govind Songara: SeeVogh has reduced the quality of your incoming video to optimize your performance.
[10:17:26] David Crooks Sory we're late - there was a fire alarm at Glasgow
[10:17:35] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:17:36] System Message to user Govind Songara: SeeVogh has turned off your incoming videos due to poor network performance.
[10:18:00] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:18:02] System Message to user Govind Songara: Koala will connect to another Panda to see if it improves
[10:18:16] System Message to user Govind Songara: SeeVogh has detected significant packet loss in your incoming video stream.
[10:18:18] System Message to user Govind Songara: SeeVogh has reduced the quality of your incoming video to optimize your performance.
[10:22:35] Ewan Mac Mahon I think it's equally worrying for everyone.
[10:22:54] Ewan Mac Mahon I'm not sure DPM is doing the right thing at all.
[10:27:15] Christopher Walker We should schedule a discussion on CHEP abstracts earlier than the last minute
[10:27:31] Alessandra Forti indeed
[10:31:07] Ewan Mac Mahon I think Dave Colling presented some stats about all non-local data access at the last GridPP meeting.
[10:31:35] Ewan Mac Mahon And ATLAS' federated redirection thing doesn't actuallly use SRM does it?
[10:31:43] Ewan Mac Mahon If talking to e.g. a DPM.
[10:31:52] Ewan Mac Mahon It just hits the xroot interface.
[10:31:56] Ewan Mac Mahon (AIUI)
[10:33:33] Sam Skipsey Indeed so, Ewan