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| ==RAL Tier1 Operations Report for 20th July 2016== | | ==RAL Tier1 Operations Report for 20th July 2016== |
Revision as of 13:12, 15 July 2016
DRAFT DRAFT DRAFT DRAFT
RAL Tier1 Operations Report for 20th July 2016
Review of Issues during the week 13th to th20 July 2016.
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- There was a problem over the weekend with some CMS writes to tape backed areas failing owing to no tape pool having been defined for these cases. This was resolved on Monday.
- There has been saturation of the inbound 10Gbit OPN link at times over the last week. The bypass route to JANET has also shown high traffic volumes.
- We have seen a couple of periods when there have been high numbers of batch jobs started multiple times. There were some on the 7th/8th July and again last night. The cause is not yet understood.
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. A recent modification has improved, but not completed fixed this.
- The intermittent, low-level, load-related packet loss seen over external connections is still being tracked. Likewise we have been working to understand some remaining low level of packet loss seen within a part of our Tier1 network.
Ongoing Disk Server Issues
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Notable Changes made since the last meeting.
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- The migration of Atlas data from "C" to "D" tapes continues. We have migrated over 700 of the 1300 tapes so far.
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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Listing by category:
- Databases:
- Switch LFC database to use new Database Infrastructure.
- Castor:
- Update SRMs to new version, including updating to SL6. This will be done after the Castor 2.1.15 update.
- Update to Castor version 2.1.15. This awaits successful resolution and testing of the new version.
- Migration of data from T10KC to T10KD tapes (Affects Atlas & LHCb data).
- Networking:
- Replace the UKLight Router. Then upgrade the 'bypass' link to the RAL border routers to 2*40Gbit.
- Fabric
- Firmware updates on older disk servers.
Entries in GOC DB starting since the last report.
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Open GGUS Tickets (Snapshot during morning of meeting)
|
GGUS ID |
Level |
Urgency |
State |
Creation |
Last Update |
VO |
Subject
|
122861
|
Green
|
Very Urgent
|
Waiting Reply
|
2016-07-14
|
2016-07-15
|
CMS
|
SAM3 CE is critical T1_UK_RAL
|
122827
|
Green
|
Less Urgent
|
In Progress
|
2016-07-12
|
2016-07-13
|
SNO+
|
Disk area at RAL
|
122818
|
Green
|
Less Urgent
|
In Progress
|
2016-07-12
|
2016-07-12
|
Atlas
|
Object Store at RAL
|
122804
|
Green
|
Less Urgent
|
Waiting Reply
|
2016-07-12
|
2016-07-15
|
SNO+
|
glite-transfer failure
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122364
|
Green
|
Less Urgent
|
Waiting Reply
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2016-06-27
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2016-07-15
|
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cvmfs support at RAL-LCG2 for solidexperiment.org
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121687
|
Yellow
|
Less Urgent
|
On Hold
|
2016-05-20
|
2016-05-23
|
|
packet loss problems seen on RAL-LCG perfsonar
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120810
|
Green
|
Urgent
|
In Progress
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2016-04-13
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2016-06-24
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Biomed
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Decommissioning of SE srm-biomed.gridpp.rl.ac.uk - forbid write access for biomed users
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120350
|
Green
|
Less Urgent
|
In Progress
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2016-03-22
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2016-05-06
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LSST
|
Enable LSST at RAL
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119841
|
Red
|
Less Urgent
|
On Hold
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2016-03-01
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2016-04-26
|
LHCb
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HTTP support for lcgcadm04.gridpp.rl.ac.uk
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117683
|
Yellow
|
Less Urgent
|
On Hold
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2015-11-18
|
2016-04-05
|
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CASTOR at RAL not publishing GLUE 2
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Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 729); CMS HC = CMS HammerCloud
Day |
OPS |
Alice |
Atlas |
CMS |
LHCb |
Atlas HC |
CMS HC |
Comment
|
13/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
14/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
15/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
16/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
17/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
18/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
19/07/16 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|