2022-11-3 Meeting Notes

5.5.1 released

Reports of significant issues (yet to check if these are on GitHub as issues)

Xcache 5.5.X problems

Stuck xroot transfers with gfal2 and XCache · Issue #1808 · xrootd/xrootd No update so far

Thoughts on combining the xrootd and webdav aliased hosts ?

Interest to try changing the DNS alias (next week?) to use common sets of host for xrootd and webdav?

unified Sandox

Initial review with Tom; some cleanup and a couple of missed config settings (due to the addition of the tpc instance to be added).

CMSD

Trying to find someone to talk to about RAL VMware

Slow stats

Ongoing study;

Separate out “unhappy” gateway scenario other items ?
With Alex, would like to confirm if any pool-dependent differences

Vector Read requests on Echo Gateways

Discussing with Ian and Alex.

Alex able to reproduce with Rob’s scripts; some testing ideas.

• I’m preparing updated simple range coalescence configuration to test against

   

Slow deletes

https://ggus.eu/index.php?mode=ticket_info&ticket_id=159395

Open

Here’s my timeline for the file: /lhcb/MC/2017/SIM/00170176/0001/00170176_00011436_1.sim

(on the webdav aliased hosts)

Svc02: Initial Write

221101 03:56:38 File descriptor 133666 associated to file /lhcb:buffer/lhcb/MC/2017/SIM/00170176/0001/00170176_00011436_1.sim opened in write mode

221101 03:57:02 ceph_close: closed fd 133666 for file buffer/lhcb/MC/2017/SIM/00170176/0001/00170176_00011436_1.sim, read ops count 0, write ops count 30, async write ops 0/0, async pending write bytes 0, async read ops 0/0, bytes written/max offset 501311973/501311972, longest async write 0.000000, longest callback invocation 0.000000, last async op age 0.000000

svc01: Checksum
CEPHSUM-2022-11-01 03:57:08,906-1593397-INFO-Result:Done, pool:lhcb, path:/lhcb:buffer/lhcb/MC/2017/SIM/00170176/0001/00170176_00011436_1.sim, checksum:ae4f33c4, time_s:5.067184,  filesize_bytes:501311973, source:file, exit_code:0, srccks:N/A

svc99: Unlink

221101 05:05:37 ceph_stat: /lhcb:buffer/lhcb/MC/2017/SIM/00170176/0001/00170176_00011436_1.sim

221101 05:05:37 ceph_posix_unlink : /lhcb:buffer/lhcb/MC/2017/SIM/00170176/0001/00170176_00011436_1.sim

https://stfc.atlassian.net/browse/XRD-52