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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 22:11:51 -0500
Cc: Dave Chinner <david@xxxxxxxxxxxxx>, Nathan Scott <nscott@xxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <4871885B.6090208@xxxxxxxxxxxxxx>
References: <486B01A6.4030104@xxxxxxxxxxxxxx> <20080702051337.GX29319@disturbed> <486B13AD.2010500@xxxxxxxxxxxxxx> <1214979191.6025.22.camel@xxxxxxxxxxxxxxxxxx> <20080702065652.GS14251@xxxxxxxxxxxxxxxxxxxxx> <486B6062.6040201@xxxxxxxxxxxxxx> <486C4F89.9030009@xxxxxxxxxxx> <486C6053.7010503@xxxxxxxxxxxxxx> <486CE9EA.90502@xxxxxxxxxxx> <486DF8F0.5010700@xxxxxxxxxxxxxx> <20080704122726.GG29319@disturbed> <340C71CD25A7EB49BFA81AE8C839266702997641@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <486E5F4D.1010009@xxxxxxxxxxx> <340C71CD25A7EB49BFA81AE8C839266702997658@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <486FA095.1050106@xxxxxxxxxxx> <340C71CD25A7EB49BFA81AE8C839266702A084A6@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <487117FC.9090109@xxxxxxxxxxx> <4871872B.9060107@xxxxxxxxxxxxxx> <487187D2.8080105@xxxxxxxxxxx> <4871885B.6090208@xxxxxxxxxxxxxx>
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Sagar Borikar wrote:
> 
> Eric Sandeen wrote:
>> Sagar Borikar wrote:
>>
>>
>>   
>>> There was no failure. Only the processes were stalled. System was 
>>> operative.
>>>     
>>
>> I'm curious, if the processes were stalled, how did you unmount the
>> filesystem to run repair on it?
>>
>> -Eric
>>   
> I ran with -n option.
> 
> xfs_repair -fvn /root/test_partition

oh....

So, you basically ran repair on a live, mounted filesystem; it's
expected that it would not be consistent at this point.

So, the errors you are seeing on this x86 are likely not related to
those you see on mips.  (the D state process might be interesting and
worth looking into, but probably not related to the problem you're
trying to solve.)

-Eric


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