2024-05-02 Meeting Notes

\uD83D\uDDD3 Date

02 May 2024

\uD83D\uDC65 Participants

Apologies:

CC:

\uD83E\uDD45 Goals

List of Epics
New tickets
Consider new functionality / items
Detailed discussion of important topics
Site report activity

\uD83D\uDDE3 Discussion topics

Current status of Echo Gateways / WNs testing

Recent sandbox’s for review / deployments:

Item	Presenter	Notes
Operational Issues Gateways and WNs: - Current status and upcoming changes	Thomas, Jyothish (STFC,RAL,SC)	2024-04-23 LHCb WGprod Echo overload (further updates?)
CHEP Abstract ideas	Thomas, Jyothish (STFC,RAL,SC)	Inputs and thoughts on existing and possible abstracts
XrootD Workshop plan	Alastair Dewhurst
Rocky 8 and 9 migration planning
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	XRD-83 - Getting issue details... STATUS
Planning for ALICE CMSD redirection	Thomas, Jyothish (STFC,RAL,SC)
Checksums fixes	Alexander Rogovskiy Thomas, Jyothish (STFC,RAL,SC)
Prefetch studies and WN changes	Alexander Rogovskiy
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

on GGUS:

Site reports

Lancaster: CEPH - seems fairly happy at the moment, Gerard investigating some issues with scrubbing. XRootD - having a set of LSST functional tests fail with permission denied whilst making their directories. The xroot logs are worse then useless for debugging auth issues. There shouldn’t be any access issues, and access works for me and Tim. However it reminded me of issues Glasgow had with LHCB (mkdir over http getting permission denied). Any tips for teasing out more information on xroot auth decisions?

Jyothish - LHCB functional tests needed additional entries in the authdb to stat root folders. e.g. lhcb:user rl additional to lhcb:user/ a

Similarly is there any good way of logging deletions server side?

Logging needs improvement across xrootd - one event one line, machine parsable, reduce clutter, uniform format. possibly bring up in the workshop?

Glasgow: Sam build newer versions of xrootd on CC7 and 8. (anticipating 5.6.9), and awaiting any updates for LB.

https://github.com/stfc/xrootd-ceph/tree/variableobjectcleanup

https://github.com/xrootd/xrootd/pull/2246