Difference between revisions of "Tier1 Operations Report 2019-05-06"

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Revision as of 10:15, 8 May 2019

RAL Tier1 Operations Report for 5th May 2019

Review of Issues during the week 29th April 2019 to the 5th May 2019.
  • We are seeing high outbound packet loss over IPv6. Investigation has restarted now that the appropriate resources are back in office.
  • High CMS job failure rates. Due to the workloads submitted by CMS, there is currently no issue. We are however still looking at making changes to the XrootD caches on the WN to improve performance.
  • On Wednesday 24th April gdss738 (LHCb) crashed and was removed from production. It was returned to production on Friday 26th April at lunch.
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
140870 t2k.org in progress less urgent 25/04/2019 29/04/2019 Data Management - generic Files vanished from RAL tape? EGI
140773 lhcb in progress top priority 18/04/2019 29/04/2019 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 26/04/2019 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 25/04/2019 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
140887 atlas solved urgent 27/04/2019 27/04/2019 File Transfer UK RAL-LCG2 ransfer error with: srm-ifce err: Communication error on send WLCG This is not a RAL issue, but a problem with Wuppertalprod already ticketed at https://ggus.eu/index.php?mode=ticket_info&ticket_id=140883 .

Closing this ticket.

140758 lhcb solved urgent 17/04/2019 24/04/2019 File Access lhcbUser svcClass not working as it should ? WLCG Hi guys,

I'm assuming I can now resolve this one again?

Cheers

D.

140577 lhcb closed less urgent 04/04/2019 25/04/2019 File Access LHCb disk only files requested with the wrong service class EGI No solution found so far. LHCb is close to migrate from the old CASTIR instance soon
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.

Availability Report

Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2019-04-22 100 100 100 100 100 100
2019-04-23 100 100 98 97 83 100
2019-04-24 100 100 100 100 100 100
2019-04-25 100 100 100 100 100 100
2019-04-26 100 100 100 100 100 100
2019-04-27 100 100 100 100 100 100
2019-04-28 100 100 100 100 100 100
2019-04-29 100 100 100 100 100 100
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2019-04-22 - 97
2019-04-23 100 100
2019-04-24 100 n/a
2019-04-25 100 n/a
2019-04-26 100 n/a
2019-04-27 100 99
2019-04-28 100 96
2019-04-29 100 96

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

Notes from Meeting.