2022-07-27 Meeting notes
- James Walder
- Ian Johnson
Date
Jul 27, 2022
Participants
@James Walder
@Ian Johnson
@Alison Packer
@Thomas, Jyothish (STFC,RAL,SC)
@Emmanuel Bejide
Lancaster: Gerard
Glasgow: Sam
Goals
List of Epics
New tickets
Consider new functionality / items
Detailed discussion of important topics
Site report activity
Discussion topics
Item | Presenter | Notes |
|---|---|---|
5.4.3 releases in Centos 7 / EL8;
| @Thomas, Jyothish (STFC,RAL,SC) | https://stfc.atlassian.net/browse/XRD-14 , https://stfc.atlassian.net/browse/XRD-10 Identified the issue, client readv calls exceeded 1024. @Thomas, Jyothish (STFC,RAL,SC) |
Outstanding items for 5.4.X XrdCeph version |
| Master: https://stfc.atlassian.net/browse/XRD-22 included;
BufferedIO: PR to merge current Master needed; |
| Add xrd.report monitoring to all xrootd instances; collate and ingest into InfluxDB.
| |
| ceph-dev-gw2: passing current compliance tests (XrootD 5.5. will be needed for all components).
| |
Deletions updates | @Ian Johnson | Expanded deletion time measurement script to automate more of the recording. Running measurements on nGB-size files (up to 8GB). Deletions of such files take < 2s for me. (Problems uploading the test data though - for 8GB file, upload takes ~ 40 minutes or errors such as “(Neon): Could not send request body: Connection reset by peer” after 20-30 minutes…) |
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Brief Summary from discussion with LHCb / Chris
gfal2 doesn’t support timeouts for removal ( to check and send any instructions to Chris? )
Write conflicts with different protocols: Dirac will immediately try another protocol.
To switch to davs once new gateways are up.Rob C’s code is the measure of performance for VR. User jobs have various counter-measures in place.
gridFTP for transfers for RAL and other TPC transfers in the UK. Some uk sites only supporting gridFTP? (to understand more details).
Site reports
Oxford Xcache:
- Xrootd service failed to start due to failed DNS name resolution of the monitoring host specified in xrootd.monitoring directive.
Lancaster:
xrdcp TPC working back again.