Date: Fri, 21 May 2021 16:00:42 +0000 From: Rick Macklem <rmacklem@uoguelph.ca> To: Mark Millard <marklmi@yahoo.com> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: releng/13 release/13.0.0 : odd/incorrect diff result over nfs (in a zfs file systems context) Message-ID: <YQXPR0101MB096874849E9749010F4BDD5CDD299@YQXPR0101MB0968.CANPRD01.PROD.OUTLOOK.COM> In-Reply-To: <D6842A56-95EC-4A2D-99E3-3DCF95C50F68@yahoo.com> References: <623369D9-5EE5-4FEF-B9AD-56499E8F1C09.ref@yahoo.com> <623369D9-5EE5-4FEF-B9AD-56499E8F1C09@yahoo.com> <YQXPR0101MB0968B29934D7BD73FCA73907DD299@YQXPR0101MB0968.CANPRD01.PROD.OUTLOOK.COM> <YTOPR0101MB0970A1257E4DD37335D5B52EDD299@YTOPR0101MB0970.CANPRD01.PROD.OUTLOOK.COM> <04D7264A-206B-4281-B452-779B01EA3327@yahoo.com> <34E915B3-30DF-408C-A931-C39188F3EB0F@yahoo.com> <E938DB30-22C9-4765-9E01-601D80B36910@yahoo.com> <YQXPR0101MB0968EA2F32C1EEB8CC8CAD9FDD299@YQXPR0101MB0968.CANPRD01.PROD.OUTLOOK.COM>, <D6842A56-95EC-4A2D-99E3-3DCF95C50F68@yahoo.com>
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Mark Millard wrote:=0A=
>On 2021-May-20, at 22:19, Rick Macklem <rmacklem at uoguelph.ca> wrote:=0A=
[stuff snipped]=0A=
>> ps: I do not think that r367492 could cause this, but it would be=0A=
>> nice if you try a kernel with the r367492 patch reverted.=0A=
>> It is currently in all of releng13, stable13 and main, although=0A=
>> the patch to fix this is was just reviewed and may hit main soon.=0A=
>=0A=
>Do you want a debug kernel to be used? Do you have a preference=0A=
>for main vs. stable/13 vs. release/13.0.0 based? Is it okay to=0A=
>stick to the base version things are now based on --or do you=0A=
>want me to update to more recent? (That last only applies if=0A=
>main or stable/13 is to be put to use.)=0A=
Well, it sounds like you've isolated it to the genet interface.=0A=
Good sluething.=0A=
Unfortunately, NFS is only as good as the network fabric under it.=0A=
However, it's usually hangs or poor performance. Except maybe=0A=
for the readdir issue that Jason Bacon reported and resolved via=0A=
an upgrade, this is a first.=0A=
--> In the old days, I would have expected IP checksums to catch=0A=
this, but I'm guessing the hardware/net driver are doing them=0A=
these days?=0A=
=0A=
W.r.t. reverting r367492...the patch to replace r367492 was just=0A=
committed to "main" by rscheff@ with a two week MFC, so it=0A=
should be in stable/13 soon. Not sure if an errata can be done=0A=
for it for releng13.0?=0A=
=0A=
Thanks for isolating this, rick=0A=
ps: Co-incidentally, I've been thinking of buying an RBPi4 as a toy.=0A=
> . . . old history deleted . . .=0A=
=0A=
=3D=3D=3D=0A=
Mark Millard=0A=
marklmi at yahoo.com=0A=
( dsl-only.net went=0A=
away in early 2018-Mar)=0A=
=0A=
=0A=
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