XCache DevOps Meeting Mar 11, 2021

Derek Weitzel (University of Nebraska - Lincoln), Marian Zvada (US CMS)

Where: ZOOM.US

Join from PC, Mac, Linux, iOS or Android: https://unl.zoom.us/j/651969661
Meeting is password-protected: ask #xcache slack channel or xcache@opensciencegrid.org

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    US: +16699006833,,651969661#  or +14086380968,,651969661#
Or Telephone:
    Dial(for higher quality, dial a number based on your current location):
        US: +1 669 900 6833  or +1 408 638 0968  or +1 646 876 9923
    Meeting ID: 651 969 661
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Attendees: Marian, Pepe, Carlos, BrianL, Diego, Ilija, Matevz, Riccardo, Andy

* BoF session about DPM next week during HEPIX workshop
* Andy talking about permissions on an virtual travel when somebody from US continent connects to the EU-organized Zoom

XRootD development for XCache
* 5.1.1 released, known issues that affect small % of sites
strange crashing affecting some sites, ASAN
* moving to C++14 from April 1 (not a joke!)
* is OSG transitioning to CentOS8?

XCache issues
* caches are working fine
* AAA SAM test issues - will be investigate offline

ATLAS XCache deployment
* Most of xcache's worked fine
* Only one server at AGLT2 had a k8s network issue so a quick restart resolved the issue
* Heartbeats are working fine, VP multinode support implemented in Rucio
* Now there is a way to tell rucio which client site uses which xcache site. Once in production Rucio will switch away from CRIC to VP way of delivering prefixed paths.

CMS XCache deployment
* try to install newer version in the containers

OSG StashCache deployment
* working on xrootd 5.1.1
* new xcache rpm on the way
* different container tags for releases in the OSG repo(s)

XRootD transfers monitoring
* discussion about attributes reported as "Unknown" for PIC, Pepe will send email to xcache@openscienegrid.org to discuss further

* integration of CERN caches in data lakes soon

There are minutes attached to this event. Show them.
    • 1:00 PM 1:05 PM
      Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS)
    • 1:05 PM 1:10 PM
      XRootD development for XCache

      General status of development, XRootD releases with new cache features, bug fixes, etc...

      Conveners: Mr Andrew Hanushevsky (SLAC National Accelerator Laboratory), Matevz Tadel (UCSD), Wei Yang (SLAC)
    • 1:10 PM 1:15 PM
      XCache issues

      XCache issues experienced during the deployment, configuration or otherwise causing problems in production or development.

    • 1:15 PM 1:20 PM
      ATLAS XCache deployment
      Conveners: Dr Ilija Vukotic (LAL), Wei Yang (SLAC)
    • 1:20 PM 1:25 PM
      CMS XCache deployment
      Conveners: Diego Ciangottini (Universita e INFN, Perugia (IT)), Mr Edgar Fajardo Hernandez (UCSD), Prof. Frank Wuerthwein (UCSD)
    • 1:25 PM 1:35 PM
      OSG StashCache deployment

      Status of OSG deployment, origin/caches operations, stashcp, usage, etc...

      Conveners: Brian Bockelman, Brian Lin (University of Wisconsin-Madison), Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Edgar Fajardo Hernandez (UCSD), John Hicks (Internet2), Mr John Thiltges (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS), Mr Matyas Selmeci (University of Wisconsin-Madison)
    • 1:35 PM 1:40 PM
      XRootD transfers monitoring
      Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Diego Davila (CMS), Mr Edgar Fajardo Hernandez (UCSD)
    • 1:40 PM 1:45 PM