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Re: xfs crash bt (was: RE: ADD 804570 - The elevator bug)

To: Russell Cattelan <cattelan@xxxxxxxxxxx>
Subject: Re: xfs crash bt (was: RE: ADD 804570 - The elevator bug)
From: Tony Gale <gale@xxxxxxxxxxxxxxxxxx>
Date: Wed, 06 Dec 2000 18:02:54 -0000 (GMT)
Cc: linux-xfs@xxxxxxxxxxx, "Lord, Steve" <SLord@xxxxxxxxxxx>
In-reply-to: <3A2E7B06.59B93BA4@xxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On 06-Dec-2000 Russell Cattelan wrote:
> 
> Well nothing obvious jumps out at me here, other than a possible
> deadlock problem.
> 
> Looking at the code related to the backtraces I don't see a common
> lock
> that
> might be tripping us up.
> 
> In the backtrace; find_inode is that  last  function listed?

Well, it's first one listed, but yes.

> 
> We probably need to look at the process table and find out what is
> running and what might be stuck.

I believe the two process stuck are expire (from inn) and slocate.
Both of these would hit the fs pretty hard.

I don't know the code, but could it be a resource starvation problem,
such as out of inodes in the vfs?

> 
> continue the system "go"
> break it again and do the cpu back traces.

Still stuck in the same places (with minor find_inode offset diff).


> 
> Is is possible to get a serial console hooked up?
> I would help a great deal in capturing  kdb output.
> 
> 

Ok, will do so tomorrow, and then try and force a lockup (it's
getting late to be at work here).

Thanks

-tony

---
E-Mail: Tony Gale <gale@xxxxxxxxxxxxxxxxxx>
Two wrongs are only the beginning.
                -- Kohn

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