dCache Tier I meeting May 7, 2019

[part of a series of meetings]

Present

dCache.org(Paul), IN2P3(), Sara(), Triumf(), BNL(), NDGF(Jens), PIC(Elena), KIT(Samuel), Fermi(), CERN()

Agenda

(see box on the other side)

Site reports

NDGF

No issues to bring up.

Questions:

Kinda planning for the 5.1 release next week at NDGF. Any known issues: no.

KIT

Everything is running fine.

http domain crashes

RT ticket 9537

New possibility due to thread getting stuck.

xrootd transfers failing

RT ticket 9648

Installed latest client (v9.4.1) --

Seen segmentation fault.

Updated configured so it now dumps the core.

Once there is a core dump, will contact the xrootd developers.

ZK reconnection

RT 9676

Update the ZK connection string to

5 minutes for the DNS timeout in Java, updated DNS record to point to the new ZK server, waited more than five minutes, then restarted the ZK server. dCache reconnected to the old ZK server, not the new ZK server.

It seems that ZK client resolves the FQDN to an IP address on start-up, but never again after that.

Missing space in linkgroup

RT 9675

Add additional information in 'ls link group' command to also show used space.

PIC

Everything is running fine.

Now have the date for the upgrade to dCache v4.2: 2019-05-28, 3 weeks time.

Support tickets for discussion

[Items are added here automagically]

DTNM

Same time, next week.