> On 18 Dec 2019, at 16:55, Rick Macklem <rmack...@uoguelph.ca> wrote:
>
> Daniel Braniss wrote:
>
>> Hi,
>> The server with the problems is running FreeBSD 11.1 stable, it was working
>> fine for >several months,
>> but after a software upgrade of our NetAPP server it’s reporting many lockd
>> errors >and becomes catatonic,
>> ...
>> Dec 18 13:11:02 moo-09 kernel: nfs server fr-06:/web/www: lockd not
>> responding
>> Dec 18 13:11:45 moo-09 last message repeated 7 times
>> Dec 18 13:12:55 moo-09 last message repeated 8 times
>> Dec 18 13:13:10 moo-09 kernel: nfs server fr-06:/web/www: lockd is alive
>> again
>> Dec 18 13:13:10 moo-09 last message repeated 8 times
>> Dec 18 13:13:29 moo-09 kernel: sonewconn: pcb 0xfffff8004cc051d0: Listen
>> queue >overflow: 194 already in queue awaiting acceptance (1 occurrences)
>> Dec 18 13:14:29 moo-09 kernel: sonewconn: pcb 0xfffff8004cc051d0: Listen
>> queue >overflow: 193 already in queue awaiting acceptance (3957 occurrences)
>> Dec 18 13:15:29 moo-09 kernel: sonewconn: pcb 0xfffff8004cc051d0: Listen
>> queue >overflow: 193 already in queue awaiting acceptance …
> Seems like their software upgrade didn't improve handling of NLM RPCs?
> Appears to be handling RPCs slowly and/or intermittently. Note that no one
> tests it with IPv6, so at least make sure you are still using IPv4 for the
> mounts and
> try and make sure IP broadcast works between client and Netapp. I think the
> NLM
> and NSM (rpc.statd) still use IP broadcast sometimes.
>
we are ipv4 - we have our own class c :-)
> Maybe the network guys can suggest more w.r.t. why, but as I've stated before,
> the NLM is a fundamentally broken protocol which was never published by Sun,
> so I suggest you avoid using it if at all possible.
well, at the moment the ball is on NetAPP court, and switching to NFSv4 at the
moment is out of the question, it’s
a production server used by several thousand students.
>
> - If the locks don't need to be seen by other clients, you can just use the
> "nolockd"
> mount option.
> or
> - If locks need to be seen by other clients, try NFSv4 mounts. Netapp filers
> should support NFSv4.1, which is a much better protocol that NFSv4.0.
>
> Good luck with it, rick
thanks
danny
> …
> any ideas?
>
> thanks,
> danny
>
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