Week of 220926
WLCG Operations Call details
- The connection details for remote participation are provided on this agenda page.
General Information
- The purpose of the meeting is:
- to report significant operational issues (i.e. issues which can or did degrade experiment or site operations) which are ongoing or were resolved after the previous meeting;
- to announce or schedule interventions at Tier-1 sites;
- to inform about recent or upcoming changes in the experiment activities or systems having a visible impact on sites;
- to provide important news about the middleware;
- to communicate any other information considered interesting for WLCG operations.
- The meeting should run from 15:00 Geneva time until 15:20, exceptionally to 15:30.
- The SCOD rota for the next few weeks is at ScodRota
- Whenever a particular topic needs to be discussed at the operations meeting requiring information from sites or experiments, it is highly recommended to announce it by email to the
wlcg-scod
list (at cern.ch
) to allow the SCOD to make sure that the relevant parties have the time to collect the required information, or invite the right people at the meeting.
Best practices for scheduled downtimes
Monday
Attendance:
- remote: Kate (chair, DB), Julia (WLCG), Michal (ATLAS), Andrew (TRIUMF), Dave (FNAL), Mark (LHCb), Borja (monitoring), Onno (NL-T1), Douglas (BNL), Christoph (CMS), Darrel (RAL), David (IN2P3), Alessandro (CNAF), Brian (RAL)
Experiments round table:
- ATLAS reports ( raw view) -
- Issues:
- "Server Error" staging failures from RRC-KI-T1_MCTAPE (GGUS:158984)
- FZK_LCG2_DATATAPE shows no free space ( elisa:5340)
- FZK received result of longest LHC fill (1PB+ dataset)
- LHCb reports ( raw view) -
- No significant issues to report - business as usual.
Sites / Services round table:
- ASGC:
- BNL: NTR
- CNAF: NTR
- EGI:
- FNAL: NTR
- IN2P3: NTR
- JINR:
- KISTI:
- KIT:
- NDGF:
- NL-T1:
- Transfers between Nikhef and Surfsara currently go through CERN (LHCOPN). Since Nikhef and Surfsara are literally neighbours, this is quite a considerable detour. Network experts are looking into this.
- The IPv6 issue we had is solved. Neighbor Discovery was not working properly; when a node was purged from the neighbor table, IPv6 traffic was lost. Our network expert Diederik Vandervenne has found a solution: enabling ARP/ND suppression.
- NRC-KI:
- OSG:
- PIC:
- RAL: NTR
- TRIUMF: NTR
- CERN computing services:
- CERN storage services:
- CERN databases: NTR
- GGUS:
- A new release is planned for Wed this week
- Release notes
- A downtime has been scheduled from 06:00 to 09:00 UTC
- Test alarms will be submitted as usual
- Monitoring:
- Final SiteMon reports for August sent around (this time for good)
- Middleware:
- Networks:
- Security:
AOB: