RAL Tier1 weekly operations castor 22/03/2019

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Standing agenda

1. Achievements this week

2. Problems encountered this week

3. What are we planning to do next week?

4. Long-term project updates (if not already covered)

5. Special topics

6. Actions

7. Review Fabric tasks 

  1.   Link

8. AoTechnicalB

9. Availability for next week

10. On-Call

11. AoOtherB

Achievements this week

  • New facd0t1 disk servers
    • All new facd0t1 disk servers are in production
    • We will then retire the old servers
  • Facilities headnodes requested on VMWare, ticket not done yet.
    • Willing to accept delays on this until ~May.
    • Queued behind new disk, tape robot and a number of Diamond ICAT tasks.
  • Acceptance testing of the new tape robot completed
    • New-style tape server installation ongoing.
    • Tape library ready for CASTOR-side testing
  • Aquilon disk servers ready to go, also queued behind tape robot.

Operation problems

  • ATLAS are periodically submitting silly SAM tests that impact availability and cause pointless callouts.
    • Rob has created a ticket with Tim.
  • CASTOR metric reporting for GridPP.
    • Looking for clarity on precisely what metrics are relevant, and given CASTOR's changed role, what system RA should report on.
  • lcgsrm10.gridpp.rl.ac.uk (LHCb) failed and was dropped out the alias. It will (probably) not be fixed.
  • castor-stager01.gridpp.rl.ac.uk went read-only on Tuesday evening due to a hypervisor load issue. According to Fabric this is a known issue.
    • A mitigation measure has been put into place (turning a high-load box on the same HV into a physical host)

Plans for next few weeks

  • Examine further standardisation of CASTOR pool settings.
    • CASTOR team to generate a list of nonstandard settings and consider whether they are justified.
  • Tape robot testing.

Long-term projects

  • New CASTOR WLCGTape instance.
    • LHCb migration is with LHCb at the moment, they are not blocked. Mirroring of lhcbDst to Echo complete.
  • CASTOR disk server migration to Aquilon.
    • Change ready to implement.
  • Deadline of end of April to get Facilities moved to generic VM headnodes and 2.1.17 tape servers.
    • Ticket with Fabric team to make the VMs.
  • RA working with James to sort out the gridmap-file distribution infrastructure and get a machine with a better name for this than castor-functional-test1
  • Bellona (new Facilities DB) migration - monitoring fixed.

Actions

  • AD wants us to make sure that experiments cannot write to that part of namespace that was used for d1t0 data: namespace cleanup/deletion of empty dirs.
    • Some discussion about what exactly is required and how this can be actually implemented.
    • CASTOR team proposal is to switch all of these directories to a fileclass with a requirement for a tape copy but no migration route; this will cause an error whenever any writes are attempted.
  • RA to look at making all fileclasses have nbcopies >= 1.
  • Problem with functional test node using a personal proxy which runs out some time in July.
    • Rob met with Jens, requested an appropriate certificate.

Staffing

  • RA out from Friday for two weeks.
  • GP out on Monday

AoB

On Call

GP on call

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