Tier1 Operations Report 2018-04-04

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RAL Tier1 Operations Report for 4th April 2018

Review of Issues during the week 27th March to 4th April 2018
  • The Castor intervention scheduled for 1st March that was cancelled owing to staff availability in the poor weather has taken place on Tuesday 27th March.
  • CMS will be migrating data from Castor to Echo with this expected to start in a few weeks time.
Current operational status and issues
  • The problems with data flows through the site firewall being restricted is still present. New firewall equipment has been delivered and is scheduled for installation in a few weeks time.
Resolved Castor Disk Server Issues
  • None.
Ongoing Castor Disk Server Issues
  • None
Limits on concurrent batch system jobs.
  • CMS Multicore 550
Notable Changes made since the last meeting.
Entries in GOC DB starting since the last report.
  • None
Declared in the GOC DB
  • None.
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.
  • Replacement (upgrade) of RAL firewall scheduled for a few weeks time.

Listing by category:

  • Echo
    • Applying minor CEPH update to fix the "backfill" bug. Increase number of placement groups and add more capacity.
  • Castor:
    • Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
    • Move to generic Castor headnodes.
  • 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).
    • Replacement (upgrade) of RAL firewall.
  • 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 09/03/2018 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 20/03/2018 File Transfer Check networking and xrootd RAL-CERN performance EGI
132589 lhcb in progress very urgent 21/12/2017 27/03/2018 Local Batch System Killed pilots at RAL WLCG
133992 atlas in progress less urgent 12/03/2018 15/03/2018 File Transfer RAL-LCG2-ECHO: No such file or directory EGI
134030 other on hold less urgent 14/03/2018 27/03/2018 Other request to replicate larsoft.opensciencegrid.org cvmfs repository EGI
134136 atlas in progress less urgent 20/03/2018 27/03/2018 File Transfer RAL-LCG2: [SE][Ls][SRM_INVALID_PATH] No such file or directory EGI
134290 cms assigned urgent 28/03/2018 28/03/2018 Monitoring T1_UK_RAL failing SAM tests EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
133619 cms solved top priority 21/02/2018 26/03/2018 CMS_Central Workflows T1_UK_RAL Unmerged files missing WLCG
133842 snoplus.snolab.ca closed less urgent 05/03/2018 22/03/2018 Other File Stuck on RAL EGI
134037 lhcb verified very urgent 15/03/2018 26/03/2018 File Access File access problem at RAL-LCG2 WLCG
134049 cms solved urgent 15/03/2018 21/03/2018 CMS_AAA WAN Access Low HC xrootd success rates at T1_UK_RAL WLCG
134086 cms solved urgent 16/03/2018 21/03/2018 CMS_Central Workflows Failures reading files T1_UK_RAL WLCG
134095 lhcb verified urgent 16/03/2018 21/03/2018 File Access Bad data encountered WLCG
134103 atlas solved urgent 17/03/2018 23/03/2018 File Transfer UK RAL-LCG2-ECHO: transfer errors with "the server responded with an error 500 500-Command failed" WLCG
134119 cms solved urgent 19/03/2018 21/03/2018 CMS_Central Workflows Issues reading files through xrootd T1_UK_RAL WLCG
134147 alice verified urgent 20/03/2018 21/03/2018 Storage Systems RAL tape SE for ALICE failing since March 14 WLCG
134252 lhcb verified very urgent 26/03/2018 27/03/2018 File Access Corrupted file at RAL-LCG2 WLCG
Availability Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day ALICE ATLAS ATLAS-ECHO CMS LHCb OPS Comment
2018-03-21 100 100 100 100 100 100
2018-03-22 100 98 100 99 100 100
2018-03-23 100 100 100 100 100 100
2018-03-24 100 100 100 99 100 100
2018-03-25 100 100 100 100 100 100
2018-03-26 100 100 100 98 100 100
2018-03-27 100 75 100 74 100 75
Availability Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2018/03/21 99 90
2018/03/22 98 96
2018/03/23 99 97
2018/03/24 99 99
2018/03/25 98 96
2018/03/26 99 93
2018/04/27 0 99 Atlas - no tests run in time bin
Notes from Meeting.
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