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XCache DevOps Meeting Sep 24, 2020

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

Time: 11AM PT/1PM CT/2PM ET/8PM CET
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

Or iPhone one-tap :
    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
    International numbers available: https://unl.zoom.us/zoomconference?m=wxCNSgMZiA-cVKSNowGYlQ

Attendees: Derek, Aaashay Arora (guest), Andy, Edgar, Mat, Diego, Georg, Ilija, JohnH, Matevz, Marian

News
----
* no news, we didn't have meeting in last two weeks

We had presentation on:
http://uaf-10.t2.ucsd.edu/~aaarora/presentations/XRootD_TPC%2009_24.pdf

Lot of questions and discussions:
- What xrootd version did you use? v5
- virtual or host networking? host networkin
- are these nodes all in the same LAN?
- is switch backplane good enough?
- is this reading from files and writing from files or from/to memory?

XRootD Development
------------------
* lot of issues/python bindings
* stuck on releases 4
* OSG needing back-porting bug fixes for releases 4
* 5.1 in late October

Issues
------
* This one is related to Aaashay slides: https://github.com/xrootd/xrootd/issues/1279

ATLAS
-----
* all kind of interesting issues appeared after upgrade to 5.0.1 at BNL

CMS
---
* most of caches moved to release 5

Monitoring
----------
* no news

OSG
---
* building 5.0.2
* xrootd multiuser work in progress
* xrootd scitoken changes toward better support LCG-style tokens (https://docs.google.com/document/d/1fdEpTQyJHQIYXjnizG60gSpEPLp18bzWDNNULH2MwP8/edit#heading=h.5ft18x44x928)
* OSG redirectors upgrades to v5.0.1
* Amsterdam node: still working on deployment

There are minutes attached to this event. Show them.
    • 13:00 13:05
      News
      Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS)
    • 13:05 13:10
      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)
    • 13:10 13:15
      XCache issues

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

    • 13:15 13:20
      ATLAS XCache deployment
      Conveners: Dr Ilija Vukotic (LAL), Wei Yang (SLAC)
    • 13:20 13:25
      CMS XCache deployment
      Conveners: Diego Ciangottini (Universita e INFN, Perugia (IT)), Mr Edgar Fajardo Hernandez (UCSD), Prof. Frank Wuerthwein (UCSD)
    • 13:25 13:35
      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)
    • 13:35 13:40
      XRootD transfers monitoring
      Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Diego Davila (CMS), Mr Edgar Fajardo Hernandez (UCSD)
    • 13:40 13:45
      AOB