Date: Thu, 19 Dec 2019 22:07:32 -0500 From: Adam McDougall <mcdouga9@egr.msu.edu> To: freebsd-stable@freebsd.org Subject: Re: nfs lockd errors after NetApp software upgrade. Message-ID: <b1182bbf-fd0b-a23d-1cc4-ddf9513bcb2e@egr.msu.edu> In-Reply-To: <8770BD0D-4B72-431A-B4F5-A29D4DBA03B1@cs.huji.ac.il> References: <EBC4AD74-EC62-4C67-AB93-1AA91F662AAC@cs.huji.ac.il> <YQBPR0101MB1427411AFE335E869B9CF022DD530@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <0121E289-D2AE-44BA-ADAC-4814CAEE676F@cs.huji.ac.il> <CAGfybS-3Rvs57=oGFEfii_9a=aWxPr6dEq1Y1LqHbLXK1ZKmXA@mail.gmail.com> <YQBPR0101MB1427F9BE658B9A46C7E08335DD520@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <854B6E5A-C6BC-44B3-A656-FC9B8EF19881@cs.huji.ac.il> <YQBPR0101MB1427F445F1F1EAF382E5131ADD520@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM> <8770BD0D-4B72-431A-B4F5-A29D4DBA03B1@cs.huji.ac.il>
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Try changing bool_t do_tcp = FALSE; to TRUE in /usr/src/sys/nlm/nlm_prot_impl.c, recompile the kernel and try again. I think this makes it match Linux client behavior. I suspect I ran into the same issue as you. I do think I used nolockd is a workaround temporarily. I can provide some more details if it works. On 12/19/19 9:21 AM, Daniel Braniss wrote: > > >> On 19 Dec 2019, at 16:09, Rick Macklem <rmacklem@uoguelph.ca> wrote: >> >> Daniel Braniss wrote: >> [stuff snipped] >>> all mounts are nfsv3/tcp >> This doesn't affect what the NLM code (rpc.lockd) uses. I honestly don't know when >> the NLM uses tcp vs udp. I think rpc.statd still uses IP broadcast at times. > can the replay cache have any influence here? I tend to remember way back issues > with it, >> >> To me, it looks like a network configuration issue. > that was/is my gut feelings too, but, as far as we can tell, nothing has changed in the network infrastructure, > the problems appeared after the NetAPP’s software was updated, it was working fine till then. > > the problems are also happening on freebsd 12.1 > >> You could capture packets (maybe when a client first starts rpc.statd and rpc.lockd) >> and then look at them in wireshark. I'd disable statup of rpc.lockd and rpc.statd >> at boot for a test client and then run something like: >> # tcpdump -s 0 -s out.pcap host <netapp-host> >> - and then start rpc.statd and rpc.lockd >> Then I'd look at out.pcap in wireshark (much better at decoding this stuff than >> tcpdump). I'd look for things like different reply IP addresses from the Netapp, >> which might confuse this tired old NLM protocol Sun devised in the mid-1980s. >> > it’s going to be an interesting week end :-( > >>> the error is also appearing on freebsd-11.2-stable, I’m now checking if it’s also >>> happening on 12.1 >>> btw, the NetApp version is 9.3P17 >> Yes. I wasn't the author of the NSM and NLM code (long ago I refused to even >> try to implement it, because I knew the protocol was badly broken) and I avoid >> fiddling with. As such, it won't have change much since around FreeBSD7. > and we haven’t had any issues with it for years, so you must have done something good > > cheers, > danny > >> >> rick >> >> cheers, >> danny >> >>> rick >>> >>> Cheers >>> >>> Richard >>> (NetApp admin) >>> >>> On Wed, 18 Dec 2019 at 15:46, Daniel Braniss <danny@cs.huji.ac.il<mailto:danny@cs.huji.ac.il>> wrote: >>> >>> >>>> On 18 Dec 2019, at 16:55, Rick Macklem <rmacklem@uoguelph.ca<mailto:rmacklem@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 >>>> >>>> _______________________________________________ >>>> freebsd-stable@freebsd.org<mailto:freebsd-stable@freebsd.org> mailing list >>>> https://lists.freebsd.org/mailman/listinfo/freebsd-stable >>>> To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org<mailto:freebsd-stable-unsubscribe@freebsd.org>" >>> >>> _______________________________________________ >>> freebsd-stable@freebsd.org<mailto:freebsd-stable@freebsd.org> mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-stable >>> To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org<mailto:freebsd-stable-unsubscribe@freebsd.org>" >> > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >
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