NFS Oopses on SPARC64?

NFS Oopses on SPARC64?

[Horst H. von Brand]

I've got Oopses with high(ish?) NFS load (compiling stuff on my x86_64 on
my automounted home from SPARC64) with vanilla 2.6.19.1 and 2.6.20-rc4
(didn't do any such madness before, and not in between). Reported as 7795
and 7796 in bugzilla.kernel.org. Aurora Corona on a SPARC Station Ultra 1,
up to date.

Has anybody else seen something like this? This machine has had random NFS
and hang problems, which I didn't have the time to investigate further then.
I attributed them to the (all too common) brownouts here.

I've set up things so I can disassemble/regenerate the .s for the stuff
referenced in the Oops, but I'd rather not (my knowledge of SPARC assembly
is almost non-existent). Any clues/pointers?

Thanks!
-- 
Dr. Horst H. von Brand                   User #22616 counter.li.org
Departamento de Informatica                    Fono: +56 32 2654431
Universidad Tecnica Federico Santa Maria             +56 32 2654239
Casilla 110-V, Valparaiso, Chile               Fax:  +56 32 2797513

Re: NFS Oopses on SPARC64?

[BERTRAND Joël]

Horst H. von Brand a écrit :

	Hello,

> I've got Oopses with high(ish?) NFS load (compiling stuff on my x86_64 on
> my automounted home from SPARC64) with vanilla 2.6.19.1 and 2.6.20-rc4
> (didn't do any such madness before, and not in between). Reported as 7795
> and 7796 in bugzilla.kernel.org. Aurora Corona on a SPARC Station Ultra 1,
> up to date.
> 
> Has anybody else seen something like this? This machine has had random NFS
> and hang problems, which I didn't have the time to investigate further then.
> I attributed them to the (all too common) brownouts here.

	I have reported in this mailing list the same bug. I have an U60/SMP 
with several raid volumes and 1 GB of main memory that currently runs 
with official 2.6.19.1. It's NFS randomly hangs with an Oops. I have 
tried kernel-nfsd (v3 and v4), same result. But user-nfsd works fine for 
me (very slow, but without any oops). I never see any hang trouble (only 
with sparc32).

	Remark : older kernel work fine and the same kernel built for i386 or 
K8 works fine too. I have tried to build 2.6.19.1 with gcc-3.4 and 
gcc-4.1, same result, nfs oppses, but not in the same routine.

> I've set up things so I can disassemble/regenerate the .s for the stuff
> referenced in the Oops, but I'd rather not (my knowledge of SPARC assembly
> is almost non-existent). Any clues/pointers?

	No...

	Regards,

	JKB

Re: NFS Oopses on SPARC64?

[Horst H. von Brand]

BERTRAND Joël <joel.bertrand@systella.fr> wrote:
> Horst H. von Brand a écrit :
> > I've got Oopses with high(ish?) NFS load (compiling stuff on my x86_64 on
> > my automounted home from SPARC64) with vanilla 2.6.19.1 and 2.6.20-rc4
> > (didn't do any such madness before, and not in between). Reported as 7795
> > and 7796 in bugzilla.kernel.org. Aurora Corona on a SPARC Station Ultra 1,
> > up to date.
> > Has anybody else seen something like this? This machine has had
> > random NFS
> > and hang problems, which I didn't have the time to investigate further then.
> 	I have reported in this mailing list the same bug.

Please report it (again?) on bugzilla.kernel.org, so it isn't lost in the
noise here.
-- 
Dr. Horst H. von Brand                   User #22616 counter.li.org
Departamento de Informatica                    Fono: +56 32 2654431
Universidad Tecnica Federico Santa Maria             +56 32 2654239
Casilla 110-V, Valparaiso, Chile               Fax:  +56 32 2797513

Re: NFS Oopses on SPARC64?

[David Miller]

From: "Horst H. von Brand" <vonbrand@inf.utfsm.cl>
Date: Tue, 09 Jan 2007 12:56:34 -0300

> BERTRAND Joël <joel.bertrand@systella.fr> wrote:
> > Horst H. von Brand a écrit :
> > > I've got Oopses with high(ish?) NFS load (compiling stuff on my x86_64 on
> > > my automounted home from SPARC64) with vanilla 2.6.19.1 and 2.6.20-rc4
> > > (didn't do any such madness before, and not in between). Reported as 7795
> > > and 7796 in bugzilla.kernel.org. Aurora Corona on a SPARC Station Ultra 1,
> > > up to date.
> > > Has anybody else seen something like this? This machine has had
> > > random NFS
> > > and hang problems, which I didn't have the time to investigate further then.
> > 	I have reported in this mailing list the same bug.
> 
> Please report it (again?) on bugzilla.kernel.org, so it isn't lost in the
> noise here.

Thanks for all the information folks.

I plan to try and look into this after I get back from LCA2007 on
January 22nd.

Re: NFS Oopses on SPARC64?

[BERTRAND Joël]

David Miller a écrit :
> From: "Horst H. von Brand" <vonbrand@inf.utfsm.cl>
> Date: Tue, 09 Jan 2007 12:56:34 -0300
> 
>> BERTRAND Joël <joel.bertrand@systella.fr> wrote:
>>> Horst H. von Brand a écrit :
>>>> I've got Oopses with high(ish?) NFS load (compiling stuff on my x86_64 on
>>>> my automounted home from SPARC64) with vanilla 2.6.19.1 and 2.6.20-rc4
>>>> (didn't do any such madness before, and not in between). Reported as 7795
>>>> and 7796 in bugzilla.kernel.org. Aurora Corona on a SPARC Station Ultra 1,
>>>> up to date.
>>>> Has anybody else seen something like this? This machine has had
>>>> random NFS
>>>> and hang problems, which I didn't have the time to investigate further then.
>>> 	I have reported in this mailing list the same bug.
>> Please report it (again?) on bugzilla.kernel.org, so it isn't lost in the
>> noise here.
> 
> Thanks for all the information folks.
> 
> I plan to try and look into this after I get back from LCA2007 on
> January 22nd.

	I have seen a patch against this bug (bugzilla.kernel.org, #7795). I 
don't have any time to test it before the next week... Can someone test it ?

	Regards,

	JKB

Re: NFS Oopses on SPARC64?

[David Miller]

From: BERTRAND_Joël <joel.bertrand@systella.fr>
Date: Thu, 11 Jan 2007 09:18:19 +0100

> 	I have seen a patch against this bug (bugzilla.kernel.org, #7795). I 
> don't have any time to test it before the next week... Can someone test it ?

That's great news, I hope it fixes the problem :-)