Difference between revisions of "Tier1 Operations Report 2015-04-01"

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* Five additional disk servers have been deployed into Castor storage for ALICE_Disk. This roughly doubles the disk space available to ALICE which is now approximately 390TB.
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* gfal2 and davix rpms are in the process of being updated.
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* On the CEs the upper memory limit was reduced from 5x requested memory to 3x.
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* ATLAS are now putting all UK transfers through our test FTS3.
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Revision as of 08:38, 27 March 2015

RAL Tier1 Operations Report for 1st April 2015

Review of Issues during the fortnight 18th March to 1st April 2015.
  • There were problems with the argus server that affected batch work on wed 18th March. This as fixed following a callout in the evening.
  • A further investigation into the primary Tier1 router on the morning of Thursday 19th March failed to fix the problem whereby the router fails after a few minutes in service.
Resolved Disk Server Issues
  • None
Current operational status and issues
  • We are running with a single router connecting the Tier1 network to the site network, rather than a resilient pair.
Ongoing Disk Server Issues
  • None
Notable Changes made this last week.
  • gfal2 and davix rpms are in the process of being updated.
Declared in the GOC DB
Service Scheduled? Outage/At Risk Start End Duration Reason
All Castor (all SRMs) SCHEDULED OUTAGE 08/04/2015 10:00 08/04/2015 14:00 4 hours Upgrade of Castor storage to version 2.1.14-15
Whole site SCHEDULED WARNING 19/03/2015 07:45 19/03/2015 08:30 45 minutes Warning during tests of Tier1s network router. Possibility of two short (few minute) breaks in connectivity to the RAL Tier1.
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.
  • Investigate problems on the primary Tier1 router. Further tests scheduled for tomorrow morning, 19th March.
  • Update Castor to 2.1-14-15 (Proposed date - Wednesday 8th April).

Listing by category:

  • Databases:
    • Switch LFC/3D to new Database Infrastructure.
    • Update to Oracle 11.2.0.4
  • Castor:
    • Update Castor to 2.1.14-15 (Proposed date - Wednesday 8th April).
    • Update SRMs to new version (includes updating to SL6).
    • Fix discrepancies found in some of the Castor database tables and columns. (The issue has no operational impact.)
  • Networking:
    • Resolve problems with primary Tier1 Router
    • Enable the RIP protocol for updating routing tables on the Tier1 routers. (Install patch to Router software).
    • Increase bandwidth of the link from the Tier1 into the RAL internal site network to 40Gbit.
    • Make routing changes to allow the removal of the UKLight Router.
  • Fabric
    • Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
Entries in GOC DB starting since the last report.
Service Scheduled? Outage/At Risk Start End Duration Reason
Whole site SCHEDULED WARNING 12/03/2015 07:45 12/03/2015 08:30 45 minutes Warning following installation of a replacement network router.
Whole site SCHEDULED WARNING 11/03/2015 10:30 11/03/2015 11:00 30 minutes Warning on site access during firmware updates on pair of network switches.
Open GGUS Tickets (Snapshot during morning of meeting)
GGUS ID Level Urgency State Creation Last Update VO Subject
112350 Green Less Urgent In Progress 2015-03-15 2015-03-17 SNO+ Download issue
112166 Green Urgent In Progress 2015-03-06 2015-03-17 Atlas RAL-LCG2 DATATAPE: destination transfer errors like "This SURL does not exist in the original request"
111699 Green Less Urgent In Progress 2015-02-10 2015-03-11 Atlas gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP
109694 Red Urgent In Progress 2014-11-03 2015-03-11 SNO+ gfal-copy failing for files at RAL
108944 Red Less Urgent In Progress 2014-10-01 2015-03-03 CMS AAA access test failing at T1_UK_RAL
Availability Report

Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 508); CMS HC = CMS HammerCloud

Day OPS Alice Atlas CMS LHCb Atlas HC CMS HC Comment
18/03/15 100 100 99 92 92 100 100 CE tests failed owing to ARGUS problem.
19/03/15 100 100 100 96 100 99 98 Failed single SRM test and had some CE test errors. At time of planned network intervention.
20/03/15 100 100 100 100 100 98 97
21/03/15 100 100 100 100 100 100 98
22/03/15 100 100 100 100 100 100 99
23/03/15 100 100 100 100 100 100 96
24/03/15 100 100 100 100 100 100 100
25/03/15 100 100 100 100 100 100 100
26/03/15 100 100 100 100 100 100 100
27/03/15 100 100 100 100 100 100 100
28/03/15 100 100 100 100 100 100 100
29/03/15 100 100 100 100 100 100 100
30/03/15 100 100 100 100 100 100 100
31/03/15 100 100 100 100 100 100 100
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