CTA deployment meeting

Monday 19 Apr 2021, 15:00 → 16:30 Europe/Zurich

600/R-001 (CERN)

Michael Davis (CERN)

15:00 → 15:10 EOSCTA Post-Migration Issues

DUNE

• See #293 Migrate DUNE from CASTOR to CTA
• Reclaim NA62 tapes I70019 and L75667
• No significant activity expected before Data Challenge 3Q2021

LHCb

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

NA62

• Protect DAQ user from deleting files written by DAQ. #295 Fix ACLs for NA62 on CTA PUBLIC, #297 Testing of p and !d eos permissions, #304 Testing of !d ACL.
• #291 T2 transfers are working because the firewall was opened, but this is a temporary situation. Any WLCG site wishing to access CTA must be on LHCONE.

15:10 → 15:20 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

TOTEM

• Migration this week, see #277
• TOTEM users (members of group zj) should be able to read, but who does the prepare?
• Post-migration: 0.5 PB of TOTEM files in EOS need a tape copy

n_TOF

• Tue 20 April 14.00: meeting with n_TOF to agree migration schedule
• One blocking issue: recall to spinner space immediately after archiving
• #143 nTOF tests on EOSCTAPUBLIC PPS , #161 Spinners space on EOSCTA PPS

CLIC/ILC

• #310 CLIC/ILC tests on EOSCTAPUBLIC PPS
• Status update: progress of tests
• Migration 1st week in June (provisional)

COMPASS

• #69 COMPASS tests on EOSCTAPUBLIC PPS
• COMPASS snaphot imported to eosctapps, instance needs spinners added to start tests

AMS

• #82 AMS tests on EOSCTAPUBLIC PPS
• Status update on tests
• He says after these tests he can proceed with integration work on his side and prepare for the migration.
• On our side, 125 tapes to repack, but 118 of these overlap with the CLIC/ILC tapes.

NA61/SHINE

• NA61/SHINE: setting up their DAQ system + storage. No schedule for testing yet.
• Decouple online and offline workflows, migrate offline to CTA.
• Start offline testing.

Backup

• #307 Migrate CASTOR Backup use cases to CTA
• Status of encryption for CASTOR backup use cases
• /afsmigration #282.

Other Use Cases

• 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.

15:20 → 15:30 CTA PUBLIC New Use Cases

• Vlado's instructions have been published as KB0007266 Archiving data in the CERN Tape Archive (CTA)
• #271 Spacal
• #274 FASER experiment on CTA
• AWAKE RQF1735636 - Archive 13 TB of AWAKE Run-1 data in /eos/experiment/awake
• AMBER (replacement for COMPASS at NA66)

15:30 → 15:40 CTA Software

• #312 Postgres performance tests
• Upgrade to PostgreSQL 12
• Performance monitoring dashboard
• Review of tickets tagged Tape Server

15:40 → 15:45 AOB

• Michael will contact Fermi to propose a technical meeting in the near future