Difference between revisions of "Tier1 Operations Report 2016-11-16"
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| style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Review of Issues during the week 9th to 16th November 2016. | | style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Review of Issues during the week 9th to 16th November 2016. | ||
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| − | * There | + | * 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) |
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| − | * GDSS713 (CMS Disk - D1T0) crashed on Sunday morning. It was returned to service the following day - initially read-only. Our checks | + | * 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. |
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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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| + | {| width="100%" cellspacing="0" cellpadding="0" style="background-color: #ffffff; border: 1px solid silver; border-collapse: collapse; width: 100%; margin: 0 0 1em 0;" | ||
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| + | | style="background-color: #b7f1ce; border-bottom: 1px solid silver; text-align: center; font-size: 1em; font-weight: bold; margin-top: 0; margin-bottom: 0; padding-top: 0.1em; padding-bottom: 0.1em;" | Notes from Meeting. | ||
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| + | * There was a discussion about the Tier1's response to the CVE-2016-5195 security issue. In particular that the batch system stopped accepting new work until the patch was received and applied. Storage continued to be available. | ||
| + | * At present Durham is the only Dirac site from which we have received production data. Test data has been received from the Leicester site. | ||
Latest revision as of 10:53, 17 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). |
| Notes from Meeting. |
- There was a discussion about the Tier1's response to the CVE-2016-5195 security issue. In particular that the batch system stopped accepting new work until the patch was received and applied. Storage continued to be available.
- At present Durham is the only Dirac site from which we have received production data. Test data has been received from the Leicester site.
