Tier1 Operations Report 2019-04-22

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RAL Tier1 Operations Report for 22nd April 2019

Review of Issues during the week 15th April 2019 to the 22nd April 2019.
  • All pleasantly peaceful and quiet over the Easter holidays.
  • CMS efficiency issue are still ongoing as is the investigation into same.
  • LHCb are now fully ECHO'ed up. On-Call have been monitoring over the Easter period and so far all appears good.

px350


Current operational status and issues
Resolved Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Ongoing Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Limits on concurrent batch system jobs.
  • ALICE - 1000
Notable Changes made since the last meeting.
  • NTR
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
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 Solution
140773 lhcb in progress top priority 18/04/2019 18/04/2019 Storage Systems Removal of Echo unbearably slow WLCG
140660 cms in progress urgent 09/04/2019 18/04/2019 CMS_Central Workflows FIle read issues for Workflows where data is located at T1_UK_RAL WLCG
140447 dteam on hold less urgent 27/03/2019 16/04/2019 Network problem packet loss outbound from RAL-LCG2 over IPv6 EGI
140220 mice in progress less urgent 15/03/2019 08/04/2019 Other mice LFC to DFC transition EGI
139672 other in progress urgent 13/02/2019 08/04/2019 Middleware No LIGO pilots running at RAL EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope Solution
140758 lhcb solved urgent 17/04/2019 17/04/2019 File Access lhcbUser svcClass not working as it should ? WLCG Should be fixed now.
140725 cms solved urgent 15/04/2019 16/04/2019 CMS_Facilities T1_UK_RAL intermittent xrootd relative failures WLCG reason is clear, more additional hardware is on the way.
140599 lhcb verified very urgent 05/04/2019 18/04/2019 File Access Data access problem at RAL-LCG2 WLCG Files have been transferred out of this diskserver into ECHO
140589 lhcb verified very urgent 04/04/2019 15/04/2019 Local Batch System Pilots killed at RAL-LCG2 WLCG As per Raja's comments, this original issue has now been resolved so ticket is being closed.
140511 cms closed urgent 01/04/2019 16/04/2019 CMS_Facilities T1_UK_RAL SAM job run out of date WLCG Issue is related to SAM dashboard.
140493 atlas closed less urgent 29/03/2019 15/04/2019 File Transfer UK RAL-LCG2 MCTAPE: transfer error with" Connection timed out," WLCG Hi xin wang,

This looks more like a problem with the source site, LRZ-LMU_DATADISK. The error message refers to the source URL at httpg://lcg-lrz-srm.grid.lrz.de:8443/srm/managerv2. Also, if I try to download from the source path, it gets stuck:

gfal-copy srm://lcg-lrz-srm.grid.lrz.de:8443/srm/managerv2?SFN=/pnfs/lrz-muenchen.de/data/atlas/dq2/atlasdatadisk/rucio/mc16_13TeV/35/cb/HITS.17137527._002530.pool.root.1 .

Can you assign a new ticket for LRZ-LMU?

I hope it's OK for me to mark this ticket "solved". Please reopen if I was mistaken.

Thanks, Tim.

140467 cms closed urgent 28/03/2019 15/04/2019 CMS_Data Transfers Stuck file at RAL WLCG Stuck file had missing stripes and a zeroth stripe with zero size. This was deleted by hand and the errors stopped appearing.
138665 mice closed urgent 04/12/2018 23/04/2019 Middleware Problem accessing LFC at RAL EGI As I understand it this ticket is has been superseded by https://ggus.eu/?mode=ticket_info&ticket_id=140220. As such I'm closing this ticket. Please feel free to reopen this ticket if you disagree.
138033 atlas solved urgent 01/11/2018 18/04/2019 Other singularity jobs failing at RAL EGI Hi James,

looks good. The test I sent succeeded. Closing ticket.

cheers alessandra

Availability Report

Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2019-04-15 100 100 99 100 100 100
2019-04-16 100 100 100 100 100 100
2019-04-17 100 100 100 100 100 100
2019-04-18 100 100 100 100 100 100
2019-04-19 100 100 100 100 100 100
2019-04-20 100 100 100 100 100 100
2019-04-21 100 100 100 100 100 100
2019-04-22 100 100 100 100 100 100
2019-04-23 100 100 98 97 83 100
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2019-04-15 - 80
2019-04-16 - 96
2019-04-17 - 100
2019-04-18 - 98
2019-04-19 - 98
2019-04-20 - 99
2019-04-21 - 97
2019-04-22 - 98
2019-04-23 - 90

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

Notes from Meeting.