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Date:      Fri, 11 Dec 2020 11:33:22 -0500
From:      mike tancsa <mike@sentex.net>
To:        Rick Macklem <rmacklem@uoguelph.ca>, J David <j.david.lists@gmail.com>, "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>
Subject:   forcing nfsv4 versions from the server? (was Re: Major issues with nfsv4
Message-ID:  <318cbeaf-ce39-6ed7-3c64-8dc0efc540ce@sentex.net>
In-Reply-To: <YQXPR0101MB096849ADF24051F7479E565CDDCA0@YQXPR0101MB0968.CANPRD01.PROD.OUTLOOK.COM>
References:  <CABXB=RRB2nUk0pPDisBQPdicUA3ooHpg8QvBwjG_nFU4cHvCYw@mail.gmail.com> <YQXPR0101MB096849ADF24051F7479E565CDDCA0@YQXPR0101MB0968.CANPRD01.PROD.OUTLOOK.COM>

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On 12/10/2020 7:59 PM, Rick Macklem wrote:
> J. David wrote:
>> Recently, we attempted to get with the 2000's and try switching from
>> NFSv3 to NFSv4 on our 12.2 servers.  This has not gone well.
>>
>> Any system we switch to NFSv4 mounts is functionally unusable, pegged
>> at 100% system CPU usage, load average 70+, largely from nfscl threads
>> and client processes using NFS.
>>
>> Dmesg shows NFS-related messages:
>>
>> $ dmesg | fgrep -i nfs | sort | uniq -c | sort -n
>>   1 nfsv4 err=10010
>>   4 nfsv4 client/server protocol prob err=10026
>>  29 nfscl: never fnd open
> Add "minorversion=1" to your FreeBSD NFS client mount options
> and error 10026 should go away (and I suspect that the 10010 will
> go away too.

Hi Rick,

    I never knew there was such an important difference. Is there a way
on the server side to force only v4.1 connections from the client when
they try and v4.x mount ?

    ---Mike




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