Difference between revisions of "Tier1 Operations Report 2016-08-24"
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* Configuration change made yesterday such that CMS jobs on all worker nodes can access remote data without requiring to go through a proxy. | * Configuration change made yesterday such that CMS jobs on all worker nodes can access remote data without requiring to go through a proxy. | ||
+ | * This morning the latest cvmfs client v2.2.3-1 has been installed on all WNs | ||
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+ | '''Listing by category:''' | ||
+ | * Preventative Maintenance on the Tape Libraries. Tuesday 13th September. | ||
'''Listing by category:''' | '''Listing by category:''' | ||
* Castor: | * Castor: | ||
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! Reason | ! Reason | ||
|- | |- | ||
− | | srm-biomed.gridpp.rl.ac.uk | + | | srm-biomed.gridpp.rl.ac.uk |
| SCHEDULED | | SCHEDULED | ||
| OUTAGE | | OUTAGE | ||
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| 2016-08-15 | | 2016-08-15 | ||
| 2016-08-17 | | 2016-08-17 | ||
− | | | + | | |
| FTS gets a SIGSEGV during a transfer | | FTS gets a SIGSEGV during a transfer | ||
|- | |- |
Latest revision as of 13:13, 24 August 2016
RAL Tier1 Operations Report for 24th August 2016
Review of Issues during the week 17th to 24th August 2016. |
- As reported last week there in an ongoing intermittent problem with packet loss seen across a part of the Tier1 network. The cause is not yet understood.
Resolved Disk Server Issues |
- None
Current operational status and issues |
- 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.
- The intermittent, low-level, load-related packet loss seen over external connections is still being tracked.
Ongoing Disk Server Issues |
- None
Notable Changes made since the last meeting. |
- Configuration change made yesterday such that CMS jobs on all worker nodes can access remote data without requiring to go through a proxy.
- This morning the latest cvmfs client v2.2.3-1 has been installed on all WNs
Declared in the GOC DB |
Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|
arc-ce01.gridpp.rl.ac.uk | SCHEDULED | OUTAGE | 25/08/2016 10:00 | 05/09/2016 15:00 | 11 days, 5 hours | ARC-CE01 being drained ahead of a reconfiguration and move to run on different infrastructure. |
srm-biomed.gridpp.rl.ac.uk, | SCHEDULED | OUTAGE | 04/08/2016 14:00 | 05/09/2016 14:00 | 32 days, | Storage for BIOMED is no longer supported since the removal of the GENScratch storage area. |
Advanced warning for other interventions |
The following items are being discussed and are still to be formally scheduled and announced. |
Listing by category:
- Preventative Maintenance on the Tape Libraries. Tuesday 13th September.
Listing by category:
- 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 LHCb data from T10KC to T10KD tapes.
- 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. |
Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|
srm-biomed.gridpp.rl.ac.uk | SCHEDULED | OUTAGE | 04/08/2016 14:00 | 05/09/2016 14:00 | 32 days, | Storage for BIOMED is no longer supported since the removal of the GENScratch storage area. |
Open GGUS Tickets (Snapshot during morning of meeting) |
GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
---|---|---|---|---|---|---|---|
123521 | Green | Less Urgent | Waiting Reply | 2016-08-22 | 2016-08-23 | LHCb | Cannot upload data to RAL-BUFFER |
123504 | Green | Less Urgent | In Progress | 2016-08-19 | 2016-08-23 | T2K | proxy expiration |
123403 | Green | Less Urgent | Waiting Reply | 2016-08-15 | 2016-08-17 | FTS gets a SIGSEGV during a transfer | |
122827 | Green | Less Urgent | In Progress | 2016-07-12 | 2016-08-22 | SNO+ | Disk area at RAL |
122364 | Green | Less Urgent | On Hold | 2016-06-27 | 2016-08-23 | cvmfs support at RAL-LCG2 for solidexperiment.org | |
121687 | Red | Less Urgent | On Hold | 2016-05-20 | 2016-05-23 | packet loss problems seen on RAL-LCG perfsonar | |
120350 | Green | Less Urgent | Waiting Reply | 2016-03-22 | 2016-08-09 | LSST | Enable LSST at RAL |
117683 | Amber | Less Urgent | On Hold | 2015-11-18 | 2016-04-05 | CASTOR at RAL not publishing GLUE 2 |
Availability Report |
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 |
---|---|---|---|---|---|---|---|---|
17/08/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
18/08/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
19/08/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
20/08/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
21/08/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
22/08/16 | 100 | 98 | 100 | 100 | 100 | 100 | N/A | Single failure of AliEn-SE test. |
23/08/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |