Attending: Brian, Dan, Raja, Sam, Jens (chair+mins), Duncan, Winnie, Teng, Alastair, Matt, RobC, Ste

Need to look at the HEPiX IPv6 working group - again - ?

MAN, GLA, RHUL, ED considered large regional T2s but not with IPv6 enabled storage.
Edinburgh should have finished...?  SteveL's tests look at the head node only.
gfal-copy -6 probably makes no difference at all, but the ones on xroot and curl clients do?

Echo to Imperial transfers seeing packet loss on IPv6.


Alastair kindly joined and gave a report from the workshop
https://indico.cern.ch/event/765497/

ATLAS & CMS OK; LHCb have high data taking rate...  ALICE decide to eschew DOMA and DataLakes;
their production use is pretty much all EOS, with use of other SEs being lighter.

LSST using cloud resources, also interactively.

Tech watch - disk, NVMe.  SSDs instead of HDD, warranty by #writes.
Also Scitokens report; progress on 3rd party copying.
Cost modelling group reported (with input from RAL, we're pleased to report).

How to select QoS?  Keep it simple...  VOs need to use the QoS, and include costing.

Rucio adopting the dCache release model (wrt. stable, golden, etc.)

Lincoln Bryant scheduled to speak at GridPP42 on "xcache with slate"


Brian
https://www.gridpp.ac.uk/wiki/IPv6_site_status
https://indico.cern.ch/event/765497/contributions/3348854/attachments/1817886/2971993/HEPiX-IPv6-26mar19v2.pdf
BD
Matt
We're just coming to the end of an interesting DHCPv6 saga at Lancaster.
MD
Robert
We should have finished now
RA
Duncan
http://pprc.qmul.ac.uk/~lloyd/gridpp/ukgrid.html
http://pprc.qmul.ac.uk/~lloyd/gridpp/nettest_http_ipv6.html
http://pprc.qmul.ac.uk/~lloyd/gridpp/nettests/LCG.UKI-LT2-Brunel.uk_UKI-SCOTGRID-ECDF-disk_http_ipv6.html
DR
Brian
https://lcgfts05.gridpp.rl.ac.uk:8449/var/log/fts3/2019-03-27/srm.glite.ecdf.ed.ac.uk__se03.esc.qmul.ac.uk/2019-03-27-0912__srm.glite.ecdf.ed.ac.uk__se03.esc.qmul.ac.uk__1205176236__07dfa4f0-7f33-56ce-9eb2-2eb77016e687
BD
Duncan
http://pprc.qmul.ac.uk/~lloyd/gridpp/nettests/LCG.UKI-LT2-Brunel.uk_UKI-SCOTGRID-ECDF-disk_xrootd_ipv6.html
INFO Wed, 27 Mar 2019 09:10:44 +0000; [1553677844229] DEST GSIFTP	PASV	se05.esc.qmul.ac.uk:[2a01:56c0:4033::32]:24240 
INFO Wed, 27 Mar 2019 09:10:44 +0000; [1553677844229] DEST GSIFTP	IPv6 [2a01:56c0:4033::32]:24240
DR
Today at 10:15 AM
https://psmad.opensciencegrid.org/maddash-webui/index.cgi?dashboard=UK%20Mesh%20Config
http://monit-grafana-open.cern.ch/d/000000809/perfsonar-ipv6?orgId=16&from=now-7d&to=now&var-src=RAL-LCG2&var-dst=UKI-SOUTHGRID-CAM-HEP&var-dst2=UKI-SCOTGRID-GLASGOW&var-dst3=UKI-SOUTHGRID-RALPP
DR
Today at 10:19 AM
https://lcgps02.gridpp.rl.ac.uk/toolkit/
DR
Today at 10:21 AM