Difference between revisions of "Tier1 Operations Report 2015-03-04"
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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 25th February to 4th March 2015. | | 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 25th February to 4th March 2015. | ||
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| − | * On Thursday (26th Feb) there was a problem with | + | * On Thursday (26th Feb) there was a problem with our Argus server that stopped batch job submission starting for an hour or so. |
| − | + | * A problem was uncovered by LHCb when a particular file could not be read from Castor. A manual fixup enabled access to the file again. However, investigations showed a problem when the file was created a few weeks ago - which was the second occurrence of a rare bug in Castor. | |
| − | * A problem was uncovered by LHCb when a particular file could not be read from Castor. A manual fixup enabled access to the file again. However, investigations showed a problem when the file was created a few weeks ago - | + | |
* Five files have been declared lost to CMS. These were all picked up by the checksum checker at various times in the last weeks. | * Five files have been declared lost to CMS. These were all picked up by the checksum checker at various times in the last weeks. | ||
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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;" | Notable Changes made this last week. | | 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;" | Notable Changes made this last week. | ||
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| − | * | + | * Removed DNs from FTS3 monitoring messages |
| − | * | + | * Cap on maximum number of ALICE batch jobs raised from 3500 to 6000. |
| − | * A | + | * A new Stratum-1 system for the cern.ch domain set-up. |
| − | + | ||
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<!-- ******* still to be formally scheduled and/or announced ******* -----> | <!-- ******* still to be formally scheduled and/or announced ******* -----> | ||
| − | * Investigate problems on the primary Tier1 router. Discussions with the vendor are ongoing. | + | * Investigate problems on the primary Tier1 router. Discussions with the vendor are ongoing. (Swap with replacement unit planned for tomorrow morning, 5th March). |
| + | * Update firmware on resilient pair of switches in the Tier1 network - planned for Wednesday 11th March. | ||
| + | * FTS3 update planned for Thursday 5th March. | ||
'''Listing by category:''' | '''Listing by category:''' | ||
* Databases: | * Databases: | ||
Latest revision as of 14:56, 4 March 2015
RAL Tier1 Operations Report for 4th March 2015
| Review of Issues during the week 25th February to 4th March 2015. |
- On Thursday (26th Feb) there was a problem with our Argus server that stopped batch job submission starting for an hour or so.
- A problem was uncovered by LHCb when a particular file could not be read from Castor. A manual fixup enabled access to the file again. However, investigations showed a problem when the file was created a few weeks ago - which was the second occurrence of a rare bug in Castor.
- Five files have been declared lost to CMS. These were all picked up by the checksum checker at various times in the last weeks.
| Resolved Disk Server Issues |
- GDSS757 (CMSDisk - D1T0) failed again early on Friday morning (27th Feb). As this server has failed multiple times it has been put back readonly and is being drained.
| Current operational status and issues |
- We are running with a single router connecting the Tier1 network to the site network, rather than a resilient pair.
| Ongoing Disk Server Issues |
- None
| Notable Changes made this last week. |
- Removed DNs from FTS3 monitoring messages
- Cap on maximum number of ALICE batch jobs raised from 3500 to 6000.
- A new Stratum-1 system for the cern.ch domain set-up.
| Declared in the GOC DB |
| Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
|---|---|---|---|---|---|---|
| Whole site | SCHEDULED | WARNING | 11/03/2015 10:30 | 11/03/2015 11:00 | 30 minutes | Warning on site access during firmware updates on pair of network switches. |
| lcgfts3.gridpp.rl.ac.uk, | SCHEDULED | WARNING | 05/03/2015 10:00 | 05/03/2015 12:00 | 2 hours | Warning on FTS3 service during upgrade to version v3.2.32 |
| Whole site | UNSCHEDULED | WARNING | 05/03/2015 07:45 | 05/03/2015 08:30 | 45 minutes | Warning following installation of a replacement network router. |
| Advanced warning for other interventions |
| The following items are being discussed and are still to be formally scheduled and announced. |
- Investigate problems on the primary Tier1 router. Discussions with the vendor are ongoing. (Swap with replacement unit planned for tomorrow morning, 5th March).
- Update firmware on resilient pair of switches in the Tier1 network - planned for Wednesday 11th March.
- FTS3 update planned for Thursday 5th March.
Listing by category:
- Databases:
- Switch LFC/3D to new Database Infrastructure.
- Update to Oracle 11.2.0.4
- Castor:
- Update SRMs to new version (includes updating to SL6).
- Fix discrepancies were found in some of the Castor database tables and columns. (The issue has no operational impact.)
- Update Castor to 2.1-14-latest.
- Networking:
- Resolve problems with primary Tier1 Router
- Make routing changes to allow the removal of the UKLight Router.
- Enable the RIP protocol for updating routing tables on the Tier1 routers. (Install patch to Router software).
- Fabric
- Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
| Entries in GOC DB starting since the last report. |
- None
| Open GGUS Tickets (Snapshot during morning of meeting) |
| GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
|---|---|---|---|---|---|---|---|
| 111856 | Green | Less Urgent | Waiting Reply | 2015-02-19 | 2015-03-03 | LHCb | Stalled LHCb jobs over night |
| 111699 | Green | Less Urgent | In Progress | 2015-02-10 | 2015-02-27 | Atlas | gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP |
| 109694 | Red | Urgent | In Progress | 2014-11-03 | 2015-03-04 | SNO+ | gfal-copy failing for files at RAL |
| 108944 | Red | Urgent | Waiting Reply | 2014-10-01 | 2015-03-03 | CMS | AAA access test failing at T1_UK_RAL |
| Availability Report |
Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 508); CMS HC = CMS HammerCloud
| Day | OPS | Alice | Atlas | CMS | LHCb | Atlas HC | CMS HC | Comment |
|---|---|---|---|---|---|---|---|---|
| 25/02/15 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | |
| 26/02/15 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | |
| 27/02/15 | 100 | 100 | 100 | 100 | 100 | 100 | 95 | |
| 28/02/15 | 100 | 100 | 100 | 100 | 100 | 100 | 95 | |
| 01/03/15 | 100 | 100 | 100 | 100 | 100 | 0 | 98 | |
| 02/03/15 | 100 | 100 | 100 | 100 | 100 | 100 | 97 | |
| 03/03/15 | 100 | 100 | 100 | 100 | 100 | 98 | 100 |
