Difference between revisions of "Tier1 Operations Report 2018-10-08"
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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 2nd October 2018 to the 8th October 2018. | | 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 2nd October 2018 to the 8th October 2018. | ||
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− | * The | + | * The LFC is STILL running - hurrah! We now believe that this problem has been properly fixed. |
− | + | ** FTS / gfal version issues | |
− | * | + | The newest version of gfal made changes to the way certificate are processed. This broke transfers to a significant number of sites. Tier-1 was ticketed to role back the FTS service. |
− | ** | + | * New Castor tape service: |
− | ** | + | ** Teir-1 have successfully run ATLAS performance tape test. Excellent results at 2GB/s. This was reported at the WLCG Archival Storage WG[1]. |
− | ** | + | ** We were second only to IN2P3 who got 50% better throughput but had dedicated 36 T10KD drives compared to our 8 T10KD drives. |
− | + | ** As we migrate more VOs to the new Castor instance we will have more drives available (up to 22) and this should mean we are likely to double our overall throughput. | |
− | * | + | ** [1] https://indico.cern.ch/event/756338/attachments/1723845/2784624/update-atlas-data-carousel-wlcg-wg.pdf |
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Revision as of 07:24, 9 October 2018
RAL Tier1 Operations Report for 8th October 2018
Review of Issues during the week 2nd October 2018 to the 8th October 2018. |
- The LFC is STILL running - hurrah! We now believe that this problem has been properly fixed.
- FTS / gfal version issues
The newest version of gfal made changes to the way certificate are processed. This broke transfers to a significant number of sites. Tier-1 was ticketed to role back the FTS service.
- New Castor tape service:
- Teir-1 have successfully run ATLAS performance tape test. Excellent results at 2GB/s. This was reported at the WLCG Archival Storage WG[1].
- We were second only to IN2P3 who got 50% better throughput but had dedicated 36 T10KD drives compared to our 8 T10KD drives.
- As we migrate more VOs to the new Castor instance we will have more drives available (up to 22) and this should mean we are likely to double our overall throughput.
- [1] https://indico.cern.ch/event/756338/attachments/1723845/2784624/update-atlas-data-carousel-wlcg-wg.pdf
Current operational status and issues |
Resolved Castor Disk Server Issues |
Machine | VO | DiskPool | dxtx | Comments |
---|---|---|---|---|
- | - | - | - | - |
Ongoing Castor Disk Server Issues |
Machine | VO | DiskPool | dxtx | Comments |
---|---|---|---|---|
gdss747 | Atlas | atlasStripInput | d1t0 | Currently in intervention. |
gdss753 | Atlas | atlasStripInput | d1t0 | Currently in intervention. |
gdss738 | LHCb | LHCb_FAILOVER,LHCb-Disk | d1t0 | Currently in intervention. |
Limits on concurrent batch system jobs. |
- None currently in-force.
Notable Changes made since the last meeting. |
- None.
Entries in GOC DB starting since the last report. |
Service | ID | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|---|
- | - | - | - | - | - | - | - |
Declared in the GOC DB |
Service | ID | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|---|
- | - | - | - | - | - | - | - |
- No ongoing downtime
- No downtime scheduled in the GOCDB for next 2 weeks
Advanced warning for other interventions |
The following items are being discussed and are still to be formally scheduled and announced. |
Listing by category:
- Castor:
- Disk only storage will end in Castor. A new single tape-only Castor instance (called WLCGTape) is being tested. This is using generic Catsor headnodes on SL7 configured by Quattor/Aquilon with a slightly newer Castor version.
- Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
- Internal
- DNS servers will be rolled out within the Tier1 network.
Open
GGUS Tickets (Snapshot taken during morning of the meeting). |
Request id | Affected vo | Status | Priority | Date of creation | Last update | Type of problem | Subject | Scope |
---|---|---|---|---|---|---|---|---|
137619 | cms | in progress | urgent | 07/10/2018 | 08/10/2018 | CMS_AAA WAN Access | T1_UK_RAL xrootd read failures | WLCG |
137391 | atlas | in progress | urgent | 25/09/2018 | 05/10/2018 | Network problem | UK RAL-LCG2 transfer errors with Communication error on send | WLCG |
137195 | ops | in progress | less urgent | 14/09/2018 | 05/10/2018 | Operations | [Rod Dashboard] Issues detected at RAL-LCG2 | EGI |
137153 | t2k.org | in progress | urgent | 12/09/2018 | 25/09/2018 | Data Management - generic | LFC entry has file size 0, preventsw registering of additional replicas | EGI |
136701 | lhcb | waiting for reply | very urgent | 14/08/2018 | 03/10/2018 | File Transfer | background of transfer errors | WLCG |
136199 | lhcb | on hold | very urgent | 18/07/2018 | 01/10/2018 | File Transfer | Lots of submitted transfers on RAL FTS | WLCG |
124876 | ops | in progress | less urgent | 07/11/2016 | 23/07/2018 | Operations | [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk | EGI |
GGUS Tickets Closed Last week |
Request id | Affected vo | Status | Priority | Date of creation | Last update | Type of problem | Subject | Scope |
---|---|---|---|---|---|---|---|---|
137565 | atlas | solved | less urgent | 03/10/2018 | 05/10/2018 | Other | failing handshake for transfers from CA-VICTORIA-WESTGRID-T2_DATADISK to UK RAL-LCG2-ECHO | WLCG |
137498 | cms | solved | urgent | 01/10/2018 | 05/10/2018 | CMS_AAA WAN Access | Xrootd FileOpenErrors in production jobs | WLCG |
137416 | none | verified | top priority | 26/09/2018 | 01/10/2018 | Other | This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release. | WLCG |
137398 | cms | solved | urgent | 26/09/2018 | 03/10/2018 | CMS_Data Transfers | Transfers failing from SPRACE to RAL - No data available | WLCG |
137294 | snoplus.snolab.ca | closed | very urgent | 20/09/2018 | 05/10/2018 | File Access | No copy on tape error on Castor at RAL | EGI |
137267 | atlas | closed | urgent | 19/09/2018 | 03/10/2018 | Other | RAL-LCG2 transfer fail with "Communication error on send" | WLCG |
137254 | ops | verified | less urgent | 18/09/2018 | 04/10/2018 | Operations | [Rod Dashboard] Issue detected : ch.cern.LFC-Write-ops@lfc.gridpp.rl.ac.uk | EGI |
137047 | t2k.org | closed | less urgent | 06/09/2018 | 04/10/2018 | File Access | Connection to RAL tape storage fails | EGI |
136840 | snoplus.snolab.ca | solved | very urgent | 23/08/2018 | 03/10/2018 | Other | Cannot upload files to LFN from Storage node | EGI |
Availability Report |
Day | Atlas | Atlas-Echo | CMS | LHCB | Alice | OPS | Comments |
---|---|---|---|---|---|---|---|
2018-10-02 | 91 | 99 | 100 | 100 | 100 | 100 | |
2018-10-03 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-10-04 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-10-05 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-10-06 | 100 | 100 | 100 | 100 | 100 | 100 | |
2018-10-07 | 100 | 100 | 99 | 100 | 100 | 100 | |
2018-10-08 | 100 | 100 | 100 | 100 | 100 | 100 |
Hammercloud Test Report |
Target Availability for each site is 97.0% | Red <90% | Orange <97% |
Day | Atlas HC | CMS HC | Comment |
---|---|---|---|
2018-08-24 | 100 | 99 | |
2018-08-25 | 100 | 99 | |
2018-08-26 | 100 | 100 | |
2018-08-27 | 100 | 100 | |
2018-08-28 | 100 | 100 | |
2018-08-29 | 100 | 99 | |
2018-08-30 | 100 | 99 | |
2018-08-01 | 100 | 99 |
Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud
Notes from Meeting. |