CTA deployment meeting

Monday 31 May 2021, 16:00 → 17:30 Europe/Zurich

600/R-001 (CERN)

Michael Davis (CERN)

16:00 → 16:10 EOSCTA Post-Migration Issues

CAST

• RQF1798821 User access to CAST data. Conclusion is that all data access requests should go through Marios Maroudas. However, it seems he does not have permission to grant access to EOS PUBLIC. As he is tied up until mid-June, this issue is on hold for a few weeks.

NA62

• RQF1798129 Optimize FTS settings for NA62? Immediate problem resolved. Scheduling of recall of files with 2 copies needs to be looked at (see #777)
• #291 NA62 gfal copy issues from T2 to CTA PUBLIC. NA62 has a working solution. The firewall can be closed.
• Protect DAQ user from deleting files written by DAQ. #295 Fix ACLs for NA62 on CTA PUBLIC, #304 Testing of !d ACL. #360 NA62 roles for accessing data in CTA
• #297 Testing of p and !d eos permissions - CLOSED. #304 !d ACL possible CTA use case

LHCb

• #306 DAQ integration and testing, including FTS Archive Monitoring (DAQ hardware expected in September).
• LHCb reprocessing campaign (begins in May??)

16:10 → 16:20 CTA PUBLIC Migration from CASTOR

• Migration of SMEs from CASTOR to CTA, see Putting EOSCTAPUBLIC into Production
• Schedule for migrating CASTOR PUBLIC experiments to CTA

NA61/SHINE

• #328 Migrate NA61/SHINE from CASTOR to CTA
• Mon 31 May 09.00: switch CASTOR to read-only
• Wed 2 June 09.00: disable access to CASTOR, migrate to CTA
• Mon 7 June 09.00: NA61/SHINE in production on CTA
• Kerberos authentication. Asking for 1.5 PB disk cache. = eosctapublicdisk

COMPASS

• #69 COMPASS tests on EOSCTAPUBLIC PPS
• COMPASS snaphot imported to eosctapps. Some tapes disabled as not available due to repack and/or drive type not available.
• Testing status update
• Repack of COMPASS tapes complete. Files in /user part of namespace moved under /compass.

n_TOF

• #143 nTOF tests on EOSCTAPUBLIC PPS , #161 Spinners space on EOSCTA PPS
• EOS fix to archive through spinner space deployed on PPS
• n_TOF have done a successful functional test
• Any other blockers or can we schedule the migration?

CLIC/ILC

• #310 CLIC/ILC tests on EOSCTAPUBLIC PPS
• Migration 1st week in June (provisional). Review w/c 10 May.

AMS

• #82 AMS tests on EOSCTAPUBLIC PPS
• Baosang will proceed with integration work on his side.
• AMS tapes have been repacked.
• Plan is to migrate AMS to CTA by end of May.

Backup

• #307 Migrate CASTOR Backup use cases to CTA
• /afsmigration #282.

Other Use Cases

• NA48 - #341 - repack underway
• r_public_misc: covers most of the rest of the small experiment use cases. Needs repacking to separate from r_public_user.
• LEP tapepools: postponed until more files have been repacked.

16:20 → 16:30 CTA PUBLIC New Use Cases

• #271 Spacal.
• #274 FASER experiment on CTA

• AWAKE RQF1735636 - Archive 13 TB of AWAKE Run-1 data in /eos/experiment/awake Script to make FTS .json file.

• RQF1747988 CERN Digital Memory, #267

• RQF1790785 TOTEM files to copy from EOS. Everything ready from our side. We could help them by giving them the script to make the .json file.

16:30 → 16:35 AOB

Development issues

• Tasks agreed with Steve
• Backpressure - Julien will document how this is being/should be addressed
• #363 Drive not put down on failure, see also issues #950 and #501
• Prepare behaviour linked to FTS losing some files on prepare