Data Challenges

Data challenges are to progressively check we have all we need included the networking infrastructure and the monitoring for the future. It is quite a close activity to TPC because as lot of the pieces we need to run these challenges are being developed and deployed here.

We need to make sure the work on data challenges contributes to the build up of a permanent infrastructure whether it is the networking connections sites have to setup or the monitoring we need.

We need to decide the outcome for the first challenge and towards the next ones.

SRM+http

Mihai presented progress on the code development and asked if there is any interest in having the clients macaroons enabled. There is clearly interest particularly for low level debugging and Andrea points out that the clients have to be "token" enabled because macaroons are only one type of token.

Future Uniform tape access

Paul has started a google doc for the requirements. We agree the developers will do a first round of comments between themselves and then all stake holders, i.e. experiments and sites will comment further.

Experiment production

• CMS: Diego reports they are going to ramp up and the presentation at the CMS S&C week was met with a lot of offers for support.
• LHCb: Chris has already enabled all LHCb storage sites they are all working apart from RAL and other 2 sites in the UK (Glasgow and QMUL)
• ATLAS: Alessandra has involved the cloud squads to complete the transition to TPC and also change the WAN/LAN read/write and delete activities because a number of sites are still using SRM and gsiftp for those too. While for TPC WEBdav is required for WAN/LAN it's up to the site to use webdav or root. Petr reports on new bugs he's found and there is a discussion about INFN-T1 and how they can test themselves their efficiency. RAL situation is also discussed because right now it is going to be very difficult for them to respect 31st May deadline. The discussion extends then also to the problems xrootd is having to be production quality. The is going to be continued offline with all the interested parties present.

Token Authorization testbed

Andrea has been working on the ATLAS/CMS IAM instances and the OIDC amnesiac testbed which was down last week has been recovered

Chat

Saul Youssef to Everyone (3:11 pm)
BTW, where are the documents that Alessandra and Christoph are referring to?
Rizart Dona to Everyone (3:11 pm)
https://indico.cern.ch/event/1009737/contributions/4237202/attachments/2196208/3713431/DOMA%20general%20Data%20Challenges%202021_02_24.pdf
Me to Everyone (3:11 pm)
Linked from the minutes
Saul Youssef to Everyone (3:12 pm)
Thanks
Diego Davila to Everyone (3:13 pm)
also this one: https://docs.google.com/document/d/1lMG4dfiPo9bPf-tAO0bINDAuEUIloC45Y-vwu1E9_Xw/edit
Shawn P McKee to Everyone (3:31 pm)
A reminder that the next packet marking meeting is today March 3rd, 11-Noon Eastern time, 5-6 PM CERN time. (coming up in ~30 minutes)

The meeting URL is https://indico.cern.ch/event/1013141/     We would like to have some level of packet marking in place for the upcoming infrastructure challenges...
Paul Millar (DESY) to Everyone (3:31 pm)
https://docs.google.com/document/d/1xioJmM1cr9iWaTd-8cpM7f6h3wP4qNfvAGxcHWSvOQs/edit?usp=sharing
Christophe Haen to Everyone (3:37 pm)
Xroot bug

https://github.com/xrootd/xrootd/issues/1404
Mihai Patrascoiu to Everyone (3:40 pm)
EOS LHCb (contains the fix) runs on EOS v4.8.40 + xrootd v4.12.8
Oliver Keeble to Everyone (3:41 pm)
https://github.com/xrootd/xrootd/issues/1404
Mihai Patrascoiu to Everyone (3:42 pm)
The fix is in xrootd-4.12.8
Riccardo Di Maria to Everyone (3:49 pm)
there is an its testing suite in escape that could be exploited, I think
wrt FTS
Mihai Patrascoiu to Everyone (3:50 pm)
Petr, could I ask why FTS DB access directly is needed?
I think it's been answered. Thanks :)
Petr Vokac to Everyone (3:52 pm)
Because I don't have FTS connected to the external monitoring.
Also I was doing different (error) aggregations than the one available in FTS Web interface
Paul Millar (DESY) to Everyone (3:55 pm)
Sorry, I have to leave for another meeting.
Mihai Patrascoiu to Everyone (3:55 pm)
The 403 Permission Denied was an EOS-specific error.
It doesn't affect other sites (and is not related to XRootd)
Diego Davila to Everyone (4:02 pm)
I have to leave to another meeting
Me to Everyone (4:02 pm)
https://its.cern.ch/jira/projects/DOMATPC/issues/DOMATPC-1