2022-07-20 Meeting notes

5.4.3 releases in Centos 7 / EL8;

• Problems observed: (pgRead / pgWrites)

@Thomas, Jyothish (STFC,RAL,SC)

https://stfc.atlassian.net/browse/XRD-14 , https://stfc.atlassian.net/browse/XRD-10

defaults to 64kiB (in async).
bufferedIO appears to improve situation for writes; reads appears to be broken.

custom core XrootD version (5.4.3) with downgraded internal protocol version to switch off pgreads/writes.

Outstanding items for 5.4.X XrdCeph version

Master: https://stfc.atlassian.net/browse/XRD-22 included;

BufferedIO: PR to merge current Master needed;
https://stfc.atlassian.net/browse/XRD-9 Code prepared; PR needed

Non Epic ticket review

All

https://stfc.atlassian.net/browse/XRD-24

Add xrd.report monitoring to all xrootd instances; collate and ingest into ES.
Initial version: https://github.com/snafus/xrdreport

Should time derivative data be calculated and exported to ES?

Tom - mentioned whether influxDB is a better option (via telegraph); to discuss further offline

https://stfc.atlassian.net/browse/XRD-23

Possibility to specify a set of “Features” that XrdCeph support; can we make use of this?

https://stfc.atlassian.net/browse/XRD-13

Did not that some difference in the reported timestamps; stalled.

https://stfc.atlassian.net/browse/XRD-21

Not yet started

https://stfc.atlassian.net/browse/XRD-20

Timeline to get a working dev instance? Another hackathon required?

Lancaster / Glasgow also looking at this

https://stfc.atlassian.net/browse/XRD-26

ceph-dev-gw2: aim to pass current compliance tests (XrootD 5.5. will be needed for all components).
Demonstrate that Echo can satisfy proposed ATLAS strategy with mixed x509 / tokens workload.