Difference between revisions of "Tier1 Operations Report 2014-11-19"
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* Made 4 GB the default memory limit for LHCb jobs on arc-ce01. | * Made 4 GB the default memory limit for LHCb jobs on arc-ce01. | ||
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| − | + | * None, A proposed at risk to update errata on Atlas, CMS and LHCb castor instance machines was cancelled. | |
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| srm-alice, srm-biomed, srm-dteam, srm-hone, srm-ilc, srm-mice, srm-minos, srm-na62, srm-pheno, srm-snoplus, srm-superb, srm-t2k. | | srm-alice, srm-biomed, srm-dteam, srm-hone, srm-ilc, srm-mice, srm-minos, srm-na62, srm-pheno, srm-snoplus, srm-superb, srm-t2k. | ||
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! GGUS ID !! Level !! Urgency !! State !! Creation !! Last Update !! VO !! Subject | ! GGUS ID !! Level !! Urgency !! State !! Creation !! Last Update !! VO !! Subject | ||
| + | |- | ||
| + | | 110244 | ||
| + | | Green | ||
| + | | Less Urgent | ||
| + | | In progress | ||
| + | | 2014-11-19 | ||
| + | | 2014-11-19 | ||
| + | | None | ||
| + | | LFC Webdav support | ||
|- | |- | ||
| 109712 | | 109712 | ||
Latest revision as of 14:14, 19 November 2014
RAL Tier1 Operations Report for 19th November 2014
| Review of Issues during the week 12th to 19th November 2014. |
- During the morning of Tuesday 18th there were network problems - particularly affecting DNS lookups. This occured following a planned network change that was not expected to affect Tier1 operations.
- On the evening of Tuesday 18th, the CMS transfer manager machine (lcgclsf02) failed. The services failed over to the backup, although there is some question about xrootd redirector services on lcgclsf02. A replacement machine is being prepared.
| Resolved Disk Server Issues |
- None
| Current operational status and issues |
- Some problems on Atlas Castor instance. At various times in the last couple of weeks the Atlas workload has led to differing groups of disk servers spending a lot of time in a "wait i/o" state. This is triggered by the numbers of reads using xroot and has led to some SAM test failures.
| Ongoing Disk Server Issues |
- GDSS673 (LhcbRawDst - D0T1) failed during the evening of Friday 14th November. The server is still undergoing checks. There are two files on the server that had not been migrated to tape.
| Notable Changes made this last week. |
- Made 4 GB the default memory limit for LHCb jobs on arc-ce01.
| Declared in the GOC DB |
* None, A proposed at risk to update errata on Atlas, CMS and LHCb castor instance machines was cancelled.
| Advanced warning for other interventions |
| The following items are being discussed and are still to be formally scheduled and announced. |
- The rollout of the RIP protocol to the Tier1 routers still has to be completed.
- First quarter 2015: Circuit testing of the remaining (i.e. non-UPS) circuits in the machine room.(Provisional dates: week 12-16 January).
Listing by category:
- Databases:
- A new database (Oracle RAC) has been set-up to host the Atlas 3D database. This is updated from CERN via Oracle GoldenGate. This system is yet to be brought into use. (Currently Atlas 3D/Frontier still uses the OGMA datase system, although this was also changed to update from CERN using Oracle Golden Gate.)
- Switch LFC/3D to new Database Infrastructure.
- Castor:
- Update Castor headnodes to SL6.
- Fix discrepancies were found in some of the Castor database tables and columns. (The issue has no operational impact.)
- Networking:
- Move switches connecting the 2011 disk servers batches onto the Tier1 mesh network.
- Make routing changes to allow the removal of the UKLight Router.
- Enable the RIP protocol for updating routing tables on the Tier1 routers.
- Fabric
- Migration of data to new T10KD tapes. (Migration of CMS from 'B' to 'D' tapes underway; migration of GEN from 'A' to 'D' tapes to follow.)
- Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
- There will be circuit testing of the remaining (i.e. non-UPS) circuits in the machine room (Expected first quarter 2015).
| Entries in GOC DB starting between the 12th and 19th November 2014. |
| Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
|---|---|---|---|---|---|---|
| srm-alice, srm-biomed, srm-dteam, srm-hone, srm-ilc, srm-mice, srm-minos, srm-na62, srm-pheno, srm-snoplus, srm-superb, srm-t2k. | SCHEDULED | WARNING | 12/11/2014 11:00 | 12/11/2014 12:00 | 1 hour | Warning on Castor GEN instance during application of OS errata updates. |
| Open GGUS Tickets (Snapshot during morning of meeting) |
| GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
|---|---|---|---|---|---|---|---|
| 110244 | Green | Less Urgent | In progress | 2014-11-19 | 2014-11-19 | None | LFC Webdav support |
| 109712 | Green | Urgent | On Hold | 2014-10-29 | 2014-11-10 | CMS | Glexec exited with status 203; ... |
| 109694 | Green | Urgent | On hold | 2014-11-03 | 2014-11-06 | SNO+ | gfal-copy failing for files at RAL |
| 108944 | Amber | Urgent | In Progress | 2014-10-01 | 2014-11-13 | CMS | AAA access test failing at T1_UK_RAL |
| 107935 | Red | Less Urgent | On Hold | 2014-08-27 | 2014-11-03 | Atlas | BDII vs SRM inconsistent storage capacity numbers |
| 106324 | Red | Urgent | On Hold | 2014-06-18 | 2014-10-13 | CMS | pilots losing network connections 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 |
|---|---|---|---|---|---|---|---|---|
| 12/11/14 | 100 | 100 | 99.2 | 100 | 100 | 100 | 99 | Single SRM (Put) test failure. |
| 13/11/14 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | |
| 14/11/14 | 100 | 100 | 100 | 100 | 100 | 98 | N/A | |
| 15/11/14 | 100 | 100 | 100 | 100 | 100 | 99 | 100 | |
| 16/11/14 | 100 | 100 | 98.4 | 100 | 100 | 100 | 99 | Two SRM Put test failures (timeouts). |
| 17/11/14 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | |
| 18/11/14 | 100 | 91.1 | 88.3 | 95.9 | 100 | 94 | 96 | Networking problems. Mainly affecting CE tests. |
