ATLAS UK Cloud Support

Thursday 3 Mar 2022, 10:00 → 11:00 Europe/London

Zoom

Tim Adye (Science and Technology Facilities Council STFC (GB)), James William Walder (Science and Technology Facilities Council STFC (GB))

https://cern.zoom.us/j/98434450232

Password protected (same as (new) OPs Mtg)

● Outstanding tickets

• • 156204 TEAM atlas UKI-NORTHGRID-MAN-HEP less urgent NGI_UK in progress 2022-03-01 09:39:00 UKI-NORTHGRID-MAN-HEP deletion errors due to unexpected server error EGI

    • Now should be fixed; following up on HC test failure

  • 156179 TEAM atlas UKI-SCOTGRID-DURHAM less urgent NGI_UK assigned 2022-03-01 16:42:00 Stage-out timeouts at UKI-SCOTGRID-DURHAM_SL7_UCORE EGI

    • tmp directory cleaning might be removing files before transfer is completing. Being investigated
    • Still some cause to check consistency

  • 155881 TEAM atlas UKI-SCOTGRID-GLASGOW less urgent NGI_UK in progress 2022-03-01 09:40:00 Stage-in at UKI-SCOTGRID-GLASGOW_CEPH timeouts EGI

    • Unclear, seems intermittent

  • 154806 TEAM atlas UKI-LT2-QMUL less urgent NGI_UK in progress 2022-03-01 11:33:00 UKI-LT2-QMUL SOURCE (and DESTINATION) transfer failures EGI

    • Increase No. connections
    • Dune using gridFTP to do large transfers

  • 154543 TEAM atlas UKI-SCOTGRID-ECDF urgent NGI_UK in progress 2022-02-08 14:01:00 DPM storage ACL configuration EGI

    • Might not now break the cache, and be rather straightforward to do; but needs care and time to monitor

  • 154436 TEAM atlas RAL-LCG2 very urgent NGI_UK in progress 2022-03-02 11:47:00 RAL Echo Davs developments EGI

    • Enabled webdavs for writes; transfers generally ok, untill xrootd issues, which are increasingly common
    • moved back to gridFTP to reduce backlog

  • 153367 TEAM atlas RAL-LCG2 urgent NGI_UK on hold 2021-12-01 15:37:00 HTTPS on RAL CTA EGI

    • Castor -> CTA migration ongoing; some ACL settings are causing additional delays

---

● CPU

• • RAL

    • Largely ok; a drop yesterday as arc ce and condor got out of sync

  • Northgrid

    • Ok; Lancs not yet managed to consider changes to fairshare

  • London

    • NTR

  • SouthGrid

    • OX Some Xcache updates; Vip migrated to 5.4.1 in the meeting

  • Scotgrid

    • GLA Xcache restart
    • Durham stage-out timeouts; possibly due to scripts that clean up the space on the wns.

---

● Ongoing Items

• TPC with http

  • RAL wedavs for writes not so succeful
  • GLA still looking

• Storageless Site tests

  • OX; upgraded to 5.4.1
  • BHAM; continued working on VP

• Storage migrations

  • How is the interaction of StorM
    • Is it Storm that resolves the URL / path, (and not )

 

 

---

● News round-table

• Alessandra

  • NTR

• Dan

  • NTR

• Gerard

  • NTR

• Stefen

• Matt

  • NTR;

• Peter

  • NTR

• Sam

  • NTR

• Vip

  • NTR

 

 

10:00 → 10:20 Status

10:20 → 10:40 Ongoing Items

• TPC with http

  • RAL wedavs for writes not so succeful
  • GLA still looking

• Storageless Site tests

  • OX; upgraded to 5.4.1
  • BHAM; continued working on VP

• Storage migrations

  • How is the interaction of StorM
    • Is it Storm that resolves the URL / path, (and not )

 

 

10:40 → 10:50 News round-table

• Alessandra

  • NTR

• Dan

  • NTR

• Gerard

  • NTR

• Stefen

• Matt

  • NTR;

• Peter

  • NTR

• Sam

  • NTR

• Vip

  • NTR

 

 

10:50 → 11:00 AOB

ATLAS Monitoring (UK Cloud)

Storage ACLs