Tier1 Operations Report 2018-11-13

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RAL Tier1 Operations Report for 5th November 2018

Review of Issues during the week 30th October to the 5th November 2018.
  • We have noticed that our CV17 storage nodes have been randomly rebooting. These nodes are not fully weighted up in Echo and further increases have been stopped while the problem is sorted out. A firmware update is being pushed out. Machines that have the new firmware appear to be fixed, but we are still gathering statistics. It should be noted that there has been no observed impact from the user perspective.
  • On 7th November, the first LHCb space token was migrated from Castor to Echo. This is the FAILOVER space token which is used by jobs from other sites if their storage is down.
  • ATLAS are unable to get their jobs via singularity to work. We believe this is because they require privileged containers and we are currently only offering unprivileged ones. We would hope that ATLAS could improve their code.
  • CMS AAA issue remains ongoing, but we believe the situation is improving. We updated the XRootD version to fix a known bug on Friday and the amount of red in the SAM tests dropped over the weekend.
Current operational status and issues
  • NTR
Resolved Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Ongoing Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
gdss788 WLCG - gridTape d0t1


Limits on concurrent batch system jobs.
  • None currently enforced.
Notable Changes made since the last meeting.
  • NA62 were successfully migrated to the new consolidated Castor tape instance.
Entries in GOC DB starting since the last report.
Service ID Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - - -
Declared in the GOC DB
Service ID Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - - -
  • No ongoing downtime
  • No downtime scheduled in the GOCDB for next 2 weeks
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Listing by category:

  • DNS servers will be rolled out within the Tier1 network.
Open

GGUS Tickets (Snapshot taken during morning of the meeting).

Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
138218 cms in progress urgent 09/11/2018 12/11/2018 CMS_Data Transfers Transfers failing from RAL_Buffer to TIFR WLCG
138033 atlas in progress urgent 01/11/2018 08/11/2018 Other singularity jobs failing at RAL EGI
137897 enmr.eu waiting for reply urgent 23/10/2018 12/11/2018 Accounting enmr.eu accounting at RAL EGI
137822 lhcb in progress top priority 18/10/2018 31/10/2018 File Transfer FTS server seems in bad state. WLCG
137650 cms in progress very urgent 09/10/2018 12/11/2018 CMS_AAA WAN Access Low HC xrootd success rates at T1_UK_RAL WLCG
137153 t2k.org in progress urgent 12/09/2018 12/11/2018 Data Management - generic LFC entry has file size 0, preventsw registering of additional replicas EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
138103 cms solved urgent 05/11/2018 07/11/2018 CMS_Data Transfers Transfers failing from RALPP to RAL WLCG
138077 cms solved urgent 02/11/2018 08/11/2018 CMS_SAM tests SAM test critical T1_UK_RAL WLCG
138028 lhcb verified urgent 01/11/2018 12/11/2018 File Access File cannot be staged WLCG
137752 other solved less urgent 15/10/2018 12/11/2018 VO Specific Software Replicate OSG CVMFS repositories to EGI stratum 1s EGI
136701 lhcb verified very urgent 14/08/2018 06/11/2018 File Transfer background of transfer errors WLCG
136199 lhcb verified very urgent 18/07/2018 06/11/2018 File Transfer Lots of submitted transfers on RAL FTS WLCG

Availability Report

Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2018-11-07 100 100 99 100 100 100
2018-11-08 100 100 100 100 100 100
2018-11-09 100 100 100 100 100 100
2018-11-10 100 100 100 100 100 100
2018-11-11 100 100 100 100 100 100
2018-11-12 100 100 100 100 100 100
2018-11-13 100 100 87 100 100 100
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2018-11-06 98 100
2018-11-07 100 99
2018-11-08 100 99
2018-11-09 100 98
2018-11-10 100 96
2018-11-11 100 92
2018-11-12 100 99
2018-11-13 100 99

Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud

Notes from Meeting.