Page Comparison

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

Thomas, Jyothish (STFC,RAL,SC)

2024-04-23 LHCb WGprod Echo overload (further updates?)

proxy memory has been increased to match allocated memory. Things have been ok since then.

Rocky8 containers with checksum library to be deployed next week
"curl changing the case on el9" - caused some issues on FTS to CNAF

CHEP Abstract ideas

Thomas, Jyothish (STFC,RAL,SC)

Inputs and thoughts on existing and possible abstracts
The XRootD software framework plays a pivotal role in data access at WLCG (Worldwide LHC Computing Grid) sites. However, when dealing with the Echo storage service, a Ceph-based Erasure Coded object store at the RAL Tier-1, challenges arise due to the unique characteristics of Echo. In this paper, we address the various improvements done to the service, to improve
improvements/studies on deletion rates, load balancing and throughput increase over DC24

XrootD Workshop plan

Alastair Dewhurst

Rocky 8 and 9 migration planning

CC today for rocky8

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

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Deletions

Planning for ALICE CMSD redirection

Thomas, Jyothish (STFC,RAL,SC)

Checksums fixes

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

Rocky8 containers with checksum library currently in preprod, to be deployed next week

Prefetch studies and WN changes

Alexander Rogovskiy

Last week LHCb submitted a lot of WGProduction jobs, which overloaded ECHO. As a result, there were a lot of failed jobs and failed downloads as well:

Image Added

Image Added

Seems like prefetch config was rolled-out to only part of the preprod farm.
After the incident, 25.04 it was rolled-out to the 2021 gen. Also memory limit was raised for xrootd proxy recently.

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

4 Nodes awaiting installation:

2 for Exit pod (+ 1 existing)
1 for cloud
1 for Tier-1 usage

Xrootd testing framework

Mariam Demir