Name: Rucio Meeting
Start: 2023-05-25T15:00:00+02:00
End: 2023-05-25T16:00:00+02:00
Location: No location set

1

News

Very positive Rucio mentions at CHEP
DIRAC & Rucio workshop registration open!
Rucio website hosting being migrated
- Might lead to some short unavailability

2

Community News & DevOps roundtable

ATLAS
CMS
- Lost replicas
  - When a replica is lost (last replica of a file is gone) Rucio detaches file from DS
    - Make this behaviour optional
    - Needs to be checked if this has an impact to other parts of the code
      - Rules (and derived rule states, length of datasets vs rule locks counts, etc.)
      - Locks
      - Messages
    - Should be tried out first; Adressed by test-cases
- Process to upgrade to 1.31
  - Multihop processing in 1.31 completely in Rucio, not FTS
    - In ATLAS only done for some RSEs, not for all
- Finished extraction of consistency checking into separate repositories
  - and pypi project
  - CMS code is now using the rucio/consistency-checking package
  - Documented under rucio/consistency-checking
    - Please send comments!
Fermilab DUNE / ICARUS / RUBIN
- Activated temporary table queries -> noticable performance improvement!
  - list_replicas (with and without temp tables) showed significant improvements
    - temp tables another factor 2
    - All on postgres
    - 1.29.12 was used
- Another Rucio deployment for "mu2e"
- Lots of work on subscriptions and automatix (for automatic testing)
Belle II
ESCAPE
- Rebuilding new cluster in 1.30
- Some problems with cs3s protocol
  - No documentation

3

Developers roundtable

32 "The Good, The Bad and the Donkey" Priority followup
- In Progress
  - Migrate DID and DID-metadata view to clean architecture #w/160 [Mayank, Anton]
  - Migrate List My Rules and Rule View to clean architecture #w/159 [Mayank, Anton]
  - Create Pages for Create Rule Workflow #w/144 [Anton]
  - Internal transfer monitoring #6189 [Radu]
  - New dispatcher logic for conveyors #6190 [Radu]
- In Review
  - Unable to Delete File DID via Undertaker #5154 [Anton]
  - Adapt probes to rucio/rucio #5804 #p/108 [Eric]
    - CMS running 1.31 probes with this fix
    - Serious overhaul of probes needed (prometheus natively, for 33)
- Todo
  - Design and implement a token request module #6187 [Dimitrios]
  - Incorporate IAM-based testing for token workflows #6188 [Dimitrios]
  - Design and implement a token cache module #6183 [Dimitrios]
  - Support protocols with NULL priority #6201 [Dimitrios]
  - Kick off SIG-Tokens [Martin]
  - Document and cleanup discrepancies between surl and lfn2pfn algorithms #5129 [Martin]
  - Reduce core tickets <15 [Martin, Mario]
  - foreign key error on deleting dids in reaper #5733 [Martin]
  - Create a server/daemon installation howto #d/178 [Mayank]
  - Create developers testing guide in the documentation #d/177 [Mayank]
  - Support OIDC login #w/149 [Mayank]
  - Migrate Dashboard to Clean Architecture #w/158 [Mayank, Anton]
  - Exchange of function-based indices with normal index #6143 [Radu]
  - Update/Re-design core.meta module #5224 [Rob]
- Done
  - Replace all instances of X509 identities presented in the legacy format #6182 [Dimitrios]
    - One PR still open for the documentation
- Delayed
Documentation corner
- Document environmental variables affecting the client #171 [Dimitrios]
- Documentation and dev guidelines for MyPi type annotations #116 [Mayank, Martin]
- Create developers testing guide in the documentation #177 [Mayank]
- Create a server/daemon installation howto #178 [Mayank]
  - Ubuntu-specific PR #215
- Improve documentation on rucio.cfg vs configuration table #183 [Radu]
- Add an FAQ-style entry aimed at users for STUCK rules #184 [Fabio]
- Add instruction about DB partitioning #185 [Martin]
- bridge the gap between running rucio in demo env and full production deployment #187 [Radu]
- Introduce documentation on subscriptions #190 [Cedric]
- Page about the different event types and messages (ActiveMQ) #226 [???]
Other topics

4

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