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\uD83E\uDD45 Goals

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Item

Presenter

Notes

Operational Issues
Gateways and WNs:
- Current status and upcoming changes

Thomas, Jyothish (STFC,RAL,SC)

Rocky 8:
1/3 alice gws
1/3 cms-aaa gws
all standard gws
gridftp gws next month

svc28-31 having network issues (ipv4 blocked)

CHEP Abstract ideas

Thomas, Jyothish (STFC,RAL,SC)

(awaiting acceptance notifications)

XrootD Workshop plan

Alastair Dewhurst

Registrations are open (pending prettification)

Rocky 8 and 9 migration planning

Shoveller

Katy Ellis

Shoveler installation and monitoring

configured using environment variables on a el9 machine (config file couldn’t be read)

did not receive packets from gws during testing

Future developments ideas planning work

Ian Johnson Thomas, Jyothish (STFC,RAL,SC)

https://stfc.atlassian.net/wiki/spaces/X/pages/459997229/Notes+from+planning+meeting+22-04-2024?atlOrigin=eyJpIjoiNDRmNDEwOWI3Y2NhNDg5MDg4ZmZiYTNhNTliOWUwNmUiLCJwIjoiYyJ9

Deletion studies through RDR

Ian Johnson

Deletions

Jira Legacy
serverSystem Jira
serverId929eceee-34b0-3928-beeb-a1a37de31a8b
keyXRD-83

For RADOS-level examination of async deletions; I’ve modified “clean up” code from bin/rados.cc “ObjBencher” class to read the list of objects to delete from an external file. However, my new version of the rados binary has Ceph auth problems, e.g

root@ceph-dev-mon1 ijj]# ./rados -p dteam ls -
2024-05-23 12:28:08.787 7f1c5813c700 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [2] - I’m investigating this.

Planning for ALICE CMSD redirection

Thomas, Jyothish (STFC,RAL,SC)

svc19 and xrootd-dev-gw3 configured as redirector managed alice gws
240523 13:18:21 1735793 XrdAccept: Unable to accept TCP connection from localhost; permission denied
the alice manager xrootd service can’t talk with the cmsd service on the same host

Checksums fixes

Alexander Rogovskiy Thomas, Jyothish (STFC,RAL,SC)

WNs are currently redirecting checksums to external gws

Prefetch studies and WN changes

Alexander Rogovskiy

View file
namewn_xcache_efficiency.pdf

Tokens Status

Thomas, Jyothish (STFC,RAL,SC) Katy Ellis

CMSD Load balancing

Thomas Byrne Thomas, Jyothish (STFC,RAL,SC)

PR:
https://github.com/stfc/xrootd/pull/8/files

SKA Gateway box

James Walder

/wiki/spaces/UK/pages/215941180

2 new servers racked up; awaiting netbox configuration.
To discuss with James A, AQ configuration

Xrootd testing framework

Mariam Demir

on GGUS:

Site reports

Lancaster: Upgrade to Reef hasn’t had any major fall out. Problems caused by changes to how metrics are exported have been mostly fixed by Gerard and Steven. Post-upgrade still seeing Slow Ops, an investigation by Gerard to try to see if deletions could be a trigger hasn’t picked up any correlation yet.

Bonus site report: We have a zoom call with Durham this afternoon to try to get to the bottom of their weird errors.

Glasgow:

Thomas, Jyothish (STFC,RAL,SC) and Sam to compare compiler options and flags to spot why Glasgow compilation is failing.

✅ Action items

⤴ Decisions

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