2024-01-04 Meeting Notes

Operational Issues over the Holiday period

Thomas, Jyothish (STFC,RAL,SC)

(JW - All quiet ?)

brief VOMS authentication failure on svc02 - caused a spike in failures

Gateways and WNs:
- Current status and upcoming changes

Thomas, Jyothish (STFC,RAL,SC)

stable status currently

• tokens deployment cms/atlas

• checksum library

• prefetch off on WNs

bugfix for calculating striper objects in direct reads

https://github.com/stfc/xrootd-ceph/pull/50

Any further comments on the PR; or ready to merge ?

• Deployment plan?

• nonstandard stripe size read

• All prod gws in sandbox

Katy Ellis to confirm a successful file dump read.

• confirmed

ECHO File transfer / throughput studies

Katy Ellis

Tests of per-file transfer writes into Echo.

Checksums fixes

Alexander Rogovskiy

Status and plans for improving Checksumming work …

https://github.com/alex-rg/xrd_ckslib/tree/main
It seems to be possible to move checksum script execution to checksum library. That removes the necessity of core xrootd patching

It is probably also possible to compute checksums in the library itself (without the help of external script). Though it seems too dangerous..

Prefetch studies and WN changes

Alexander Rogovskiy

Status and plans for Prefect study testing …

Deletion studies through RDR

Ian Johnson

Tokens testing

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

XRD-63 - Getting issue details... STATUS
XRD-78 - Getting issue details... STATUS

https://github.com/xrootd/xrootd/pull/2151/files

Understanding CMSD Loadbalancing

Thomas Byrne

SKA Gateway box

James Walder

/wiki/spaces/UK/pages/215941180

Architectural review ‘hackathon’

All

Plan the process for the Architectural planning of XRootD across the External Gateways and WNs

2024 Planning