Difference between revisions of "Tier1 Operations Report 2016-11-16"
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* There was a short (one to two hour) interruption to tape mounts while the system that runs the tape library control software was swapped on Tuesday morning (15th Nov). | * There was a short (one to two hour) interruption to tape mounts while the system that runs the tape library control software was swapped on Tuesday morning (15th Nov). | ||
− | * LHCb writing to the 'D' tapes. | + | * LHCb writing to the 'D' tapes. The migration of their data from 'C' to 'D' tapes is underway - with around 100 (some 10%) of the tapes done. |
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Revision as of 12:38, 16 November 2016
RAL Tier1 Operations Report for 16th November 2016
Review of Issues during the week 9th to 16th November 2016. |
- There was a problem with one of the Atlas Frontier launchpads on Monday 14th. All three such systems were updated to the newer release (3.5.22)
Resolved Disk Server Issues |
- GDSS713 (CMS Disk - D1T0) crashed on Sunday morning. It was returned to service the following day - initially read-only. Our checks did not find any fault on the server.
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 that has been seen over external connections is still being tracked. The replacement of the UKLight router appears to have reduced this - but we are allowing more time to pass before drawing any conclusions.
Ongoing Disk Server Issues |
- None
Notable Changes made since the last meeting. |
- There was a short (one to two hour) interruption to tape mounts while the system that runs the tape library control software was swapped on Tuesday morning (15th Nov).
- LHCb writing to the 'D' tapes. The migration of their data from 'C' to 'D' tapes is underway - with around 100 (some 10%) of the tapes done.
Declared in the GOC DB |
None
Advanced warning for other interventions |
The following items are being discussed and are still to be formally scheduled and announced. |
Listing by category:
- Castor:
- Merge AtlasScratchDisk and LhcbUser into larger disk pools
- Update to Castor version 2.1.15. Planning to roll out January 2017. (Proposed dates: 10th Jan: Nameserver; 17th Jan: First stager (LHCb); 24th Jan: Stager (Atlas); 26th Jan: Stager (GEN); 31st Jan: Final stager (CMS)).
- 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. |
Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|
gridftp.echo.stfc.ac.uk, s3.echo.stfc.ac.uk, s3.echo.stfc.ac.uk, xrootd.echo.stfc.ac.uk | SCHEDULED | OUTAGE | 16/11/2016 10:30 | 16/11/2016 14:30 | 4 hours | Upgrading backend network behind Echo Storage service |
Open GGUS Tickets (Snapshot during morning of meeting) |
GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
---|---|---|---|---|---|---|---|
124876 | Green | Less Urgent | On Hold | 2016-11-07 | 2016-11-15 | OPS | [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk |
124785 | Red | Urgent | Reopened | 2016-11-02 | 2016-11-09 | CMS | Configuration updated AAA - CMS Site Name missing |
124606 | Yellow | Very Urgent | In Progress | 2016-10-24 | 2016-11-01 | CMS | Consistency Check for T1_UK_RAL |
122827 | Green | Less Urgent | Waiting for Reply | 2016-07-12 | 2016-10-11 | SNO+ | Disk area at RAL |
120350 | Yellow | Less Urgent | In Progress | 2016-03-22 | 2016-08-09 | LSST | Enable LSST at RAL |
117683 | Red | Less Urgent | On Hold | 2015-11-18 | 2016-10-05 | CASTOR at RAL not publishing GLUE 2 (Updated. There are ongoing discussions with GLUE & WLCG) |
Availability Report |
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 |
---|---|---|---|---|---|---|---|---|
09/11/16 | 100 | 100 | 100 | 100 | 100 | 92 | N/A | |
10/11/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
11/11/16 | 100 | 100 | 100 | 100 | 100 | 100 | N/A | |
12/11/16 | 100 | 100 | 100 | 99 | 100 | 100 | N/A | Single SRM test failure: User timeout over |
13/11/16 | 100 | 100 | 100 | 100 | 100 | 100 | 97 | |
14/11/16 | 100 | 100 | 100 | 100 | 100 | 100 | 93 | |
15/11/16 | 100 | 100 | N/A | 100 | 100 | 100 | 100 | (Atlas tests not reporting). |