Difference between revisions of "Tier1 Operations Report 2018-01-31"

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* Security patching done or underway.
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* The Upgrade of Echo to the latest CEPH release (“Luminous”) was carried out successfully during the second half of last week. This was done as a rolling update with the service available throughout.
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* The WMS service has been declared as not in production in the GOC DB.
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* ALICE VOBOXes (lcgvo07 and lcgvo09) and LHCb VOBOX (lcgvo10) are now dual stack IPv4/6.
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* Updating Echo CEPH to the "Luminous" version underway. The service will continue to operate during this intervention.
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* The hyperk VO has been enabled on the batch farm.
 
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Revision as of 11:00, 31 January 2018

RAL Tier1 Operations Report for 31st January 2018

Review of Issues during the week 24th to 31st January 2018
  • Last week we reported on an ongoing problem with the Atlas Castor instance. Overnight Tuesday to Wednesday last week (22/23 Jan) the Atlas Castor instance was declared down and this table (the “diskcopy” table and the associated indexes) was rebuilt. During Wednesday the Atlas Castor instance returned to normal operation. There is a large amount of what is effectively dark data (around 1Pbyte) to be deleted of the disk servers and this will take some time as a steady background operation.
  • We await further updates regarding an ongoing problem with one of the BMS (Building Management Systems) in the R89 machine room. This has an intermittent fault.
Current operational status and issues
  • Ongoing security patching.
Resolved Castor Disk Server Issues
  • gdss736 (lhcbDst - D1T0) - Back in production RO
  • gdss737 (lhcbDst - D1T0) - Back in production RO
Ongoing Castor Disk Server Issues
  • gdss762 (atlasStripInput - D0T1) – Removed again from prod for re-installation
Limits on concurrent batch system jobs.
  • CMS Multicore 550
Notable Changes made since the last meeting.
  • The Upgrade of Echo to the latest CEPH release (“Luminous”) was carried out successfully during the second half of last week. This was done as a rolling update with the service available throughout.
  • ALICE VOBOXes (lcgvo07 and lcgvo09) and LHCb VOBOX (lcgvo10) are now dual stack IPv4/6.
  • The hyperk VO has been enabled on the batch farm.
Entries in GOC DB starting since the last report.


Declared in the GOC DB
Service Scheduled? Outage/At Risk Start End Duration Reason
srm-alice.gridpp.rl.ac.uk, srm-atlas.gridpp.rl.ac.uk, srm-cms.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-mice.gridpp.rl.ac.uk, UNSCHEDULED WARNING 24/01/2018 22:00 25/01/2018 10:03 12 hours and 3 minutes We have a problem with our tape library controller and cannot mount tapes. Writes to tape will succeed in that they will be stored on the disk buffers in front of the tape system. Recalls from tape will fail (unless the file is already on the disk buffer). Access to disk-only storage is unaffected.
srm-atlas.gridpp.rl.ac.uk, UNSCHEDULED OUTAGE 23/01/2018 15:45 24/01/2018 14:00 22 hours and 15 minutes emergency downtime of Castor Atlas while rebuilding some database tables
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Ongoing or Pending - but not yet formally announced:

  • Update to next CEPH version ("Luminous"). Ongoing.

Listing by category:

  • Castor:
    • Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
    • Move to generic Castor headnodes.
  • Echo:
    • Update to next CEPH version ("Luminous"). Ongoing.
  • Networking
    • Extend the number of services on the production network with IPv6 dual stack. (Done for Perfsonar, FTS3, all squids and the CVMFS Stratum-1 servers).
  • Internal
    • DNS servers will be rolled out within the Tier1 network.
    • Infrastructure
  • Testing of power distribution boards in the R89 machine room is being scheduled for some time late July / Early August. The effect of this on our services is being discussed.
Open GGUS Tickets (Snapshot during morning of meeting)
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
117683 none on hold less urgent 18/11/2015 03/01/2018 Information System CASTOR at RAL not publishing GLUE 2 EGI
124876 ops on hold less urgent 07/11/2016 13/11/2017 Operations [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk EGI
127597 cms on hold urgent 07/04/2017 29/01/2018 File Transfer Check networking and xrootd RAL-CERN performance EGI
132589 lhcb in progress very urgent 21/12/2017 30/01/2018 Local Batch System Killed pilots at RAL WLCG
133139 ops in progress less urgent 30/01/2018 30/01/2018 Operations [Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce01.gridpp.rl.ac.uk EGI
133154 ops in progress less urgent 31/01/2018 31/01/2018 Operations [Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce02.gridpp.rl.ac.uk EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject
131815 t2k.org verified less urgent 13/11/2017 29/01/2018 Storage Systems Extremely long download times for T2K files on tape at RAL
132712 other solved less urgent 04/01/2018 30/01/2018 Other support for the hyperk VO (RAL-LCG2)
132802 cms solved urgent 11/01/2018 26/01/2018 CMS_AAA WAN Access Low HC xrootd success rates at T1_UK_RAL
132844 atlas verified urgent 14/01/2018 25/01/2018 Storage Systems UK RAL-LCG2 DATADISK transfer errors "DESTINATION OVERWRITE srm-ifce err:"
132935 atlas solved less urgent 18/01/2018 24/01/2018 Storage Systems UK RAL-LCG2: deletion errors
132963 atlas verified top priority 21/01/2018 24/01/2018 Middleware RAL arc-ce03 flakey
133046 ops verified less urgent 25/01/2018 29/01/2018 Operations [Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-sw-csh-ops@arc-ce02.gridpp.rl.ac.uk
133066 atlas solved top priority 26/01/2018 30/01/2018 File Transfer Unable to contact fts3-test.gridpp.rl.ac.uk
133082 lhcb verified top priority 27/01/2018 28/01/2018 File Transfer Data transfer problem at RAL
133092 atlas solved top priority 29/01/2018 29/01/2018 Other RAL FTS server in troubles
Availability Report
Day OPS Alice Atlas CMS LHCb Atlas Echo Comment
24/01/18 100 100 52 100 100 100
25/01/18 100 100 100 100 100 100
26/01/18 100 100 100 100 100 100
27/01/18 100 100 100 100 100 100
28/01/18 100 100 100 100 100 100
29/01/18 100 100 100 100 100 100
30/01/18 100 100 100 100 100 100
Hammercloud Test Report

Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_UCORE, Template 841); CMS HC = CMS HammerCloud

Day Atlas HC CMS HC Comment
24/01/18 100 100
25/01/18 100 100
26/01/18 100 100
27/01/18 0 100 Atlas HC - no tests run in time bin
28/01/18 100 99
29/01/18 100 100
30/01/18 100 100
Notes from Meeting.
  • None yet.
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