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Re: Xfs Access to block zero exception and system crash

To: Sagar Borikar <sagar_borikar@xxxxxxxxxxxxxx>
Subject: Re: Xfs Access to block zero exception and system crash
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Sun, 06 Jul 2008 22:47:14 -0500
Cc: Dave Chinner <david@xxxxxxxxxxxxx>, Nathan Scott <nscott@xxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <48719093.3060907@xxxxxxxxxxxxxx>
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Sagar Borikar wrote:


> Ok. So initially our multi client iozone stress test used to fail. 

Are these multiple nfs clients?

> But 
> as it took 2-3 days
> to replicate the issue, I tried the test, standalone on MIPS and 

the iozone test again?

> observed similar failures which
> I used to get in multi client test. The test is exactly same what I do 
> in mutli client
> iozoen over network. Hence I came to conclusion that if we fix system to 
> pass my test case
> then we can try iozone test with that fix.  And now on x86 with 2.6.24, 
> I am finding similar deadlock but
> the system is responsive and there are no lockups or exceptions. Do you 
> observe similar failures on x86
> at your setup? 

So far I've not seen the deadlocks.

> Also do you think the issues which I am seeing on x86 and 
> MIPS are coming from the
> same sources?

hard to say at this point, I think.

-Eric

> Thanks
> Sagar
> 


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