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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 22:22:24 -0500
Cc: Dave Chinner <david@xxxxxxxxxxxxx>, Nathan Scott <nscott@xxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <48718AB6.80709@xxxxxxxxxxxxxx>
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Sagar Borikar wrote:

> All the the copies are pending and file size in those directories is 
> constant. It is not
> increasing.
>  And as the processes are in D state, the file system is marked as busy 
> and I can't unmount
> it.

Understood.  It looks like you've deadlocked somewhere.  But, this is
not the problem you are really trying to solve, right?  You just were
trying to recreate the mips problem on x86?

If you want, do a sysrq-t to get traces of all those cp's to see where
they're stuck, but this probably isn't getting you much closer to
solving the original problem.

(BTW: is this the exact same testcase that led to the block 0 access on
mips which started this thread?)

-Eric


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