RAL Tier1 Operations Report for 11th January 2017
Review of Issues during the week 11th to 18th January 2017.
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- We have still been seeing SAM SRM tests failures for CMS. These are owing to the total load.
- LHCb have reported a problem accessing some files - and a GGUS ticket is open about this.
Resolved Disk Server Issues
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Current operational status and issues
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- There is a problem seen by LHCb of a low but persistent rate of failure when copying the results of batch jobs to Castor. There is also a further problem that sometimes occurs when these (failed) writes are attempted to storage at other sites.
Ongoing Disk Server Issues
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Notable Changes made since the last meeting.
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- Changes made to the publishing of CPU capacity to the information system (GLUE1 & GLUE2).
- Migration of LHCb data from 'C' to 'D' tapes ongoing. Now a little over 80% done. Around 170 out of the 1000 tapes still to do.
- The site-BDIIs are have been put fully behind the load balancers.
- Castor 2.1.15 upgrade of LHCb stager ongoing at time of meeting.
Service
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Scheduled?
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Outage/At Risk
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Start
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End
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Duration
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Reason
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Castor CMS instance
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SCHEDULED
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OUTAGE
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31/01/2017 10:00
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31/01/2017 16:00
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6 hours
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Castor 2.1.15 Upgrade. Only affecting CMS instance. (CMS stager component being upgraded).
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Castor GEN instance
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SCHEDULED
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OUTAGE
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26/01/2017 10:00
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26/01/2017 16:00
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6 hours
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Castor 2.1.15 Upgrade. Only affecting GEN instance. (GEN stager component being upgraded).
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Castor Atlas instance
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SCHEDULED
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OUTAGE
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24/01/2017 10:00
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24/01/2017 16:00
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6 hours
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Castor 2.1.15 Upgrade. Only affecting Atlas instance. (Atlas stager component being upgraded).
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Castor LHCb instance
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SCHEDULED
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OUTAGE
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18/01/2017 10:00
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18/01/2017 16:00
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6 hours
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Castor 2.1.15 Upgrade. Only affecting LHCb instance. (LHCb stager component being upgraded).
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Advanced warning for other interventions
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The following items are being discussed and are still to be formally scheduled and announced.
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Pending - but not yet formally announced:
- Merge AtlasScratchDisk into larger Atlas disk pool.
Listing by category:
- Castor:
- Update to Castor version 2.1.15. Dates announced via GOC DB for early 2017.
- Update SRMs to new version, including updating to SL6. This will be done after the Castor 2.1.15 update.
- Fabric
- Firmware updates on older disk servers.
Entries in GOC DB starting since the last report.
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Service
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Scheduled?
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Outage/At Risk
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Start
|
End
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Duration
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Reason
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srm-lhcb.gridpp.rl.ac.uk
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SCHEDULED
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OUTAGE
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18/01/2017 10:00
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18/01/2017 16:00
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6 hours
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Castor 2.1.15 Upgrade. Only affecting LHCb instance. (LHCb stager component being upgraded).
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Most services (not Castor)
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UNSCHEDULED
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WARNING
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16/01/2017 13:30
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16/01/2017 14:30
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1 hour
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Warning on site services during short intervention on system supporting VMs.
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Open GGUS Tickets (Snapshot during morning of meeting)
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GGUS ID |
Level |
Urgency |
State |
Creation |
Last Update |
VO |
Subject
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125856
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Green
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Top Priority
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Waiting Reply
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2017-01-06
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2016-01-18
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LHCb
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Permission denied for some files
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124876
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Amber
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Less Urgent
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On Hold
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2016-11-07
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2017-01-01
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OPS
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[Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
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117683
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Red
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Less Urgent
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On Hold
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2015-11-18
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2016-12-07
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CASTOR at RAL not publishing GLUE 2. We looked at this as planned in December (report).
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Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 808); CMS HC = CMS HammerCloud
Day |
OPS |
Alice |
Atlas |
CMS |
LHCb |
Atlas HC |
CMS HC |
Comment
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11/01/17 |
100 |
100 |
100 |
92 |
100 |
N/A |
100 |
SRM test failures - User timeout
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12/01/17 |
100 |
100 |
100 |
93 |
100 |
N/A |
N/A |
SRM test failures - User timeout
|
13/01/17 |
100 |
100 |
100 |
97 |
100 |
N/A |
100 |
SRM test failures - User timeout
|
14/01/17 |
100 |
100 |
100 |
95 |
100 |
N/A |
100 |
SRM test failures - User timeout
|
15/01/17 |
100 |
100 |
100 |
100 |
100 |
N/A |
100 |
|
16/01/17 |
100 |
100 |
100 |
97 |
100 |
N/A |
100 |
SRM test failures - User timeout
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17/01/17 |
100 |
100 |
100 |
96 |
style="background-color: lightgrey;" 96 |
N/A |
100 |
LHCb: Single SRM failure on list; CMS: SRM test failures - User timeout
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