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Re: Lockup since 2.4.4 when switching from X to console

To: Eric Sandeen <sandeen@xxxxxxx>
Subject: Re: Lockup since 2.4.4 when switching from X to console
From: Juri Haberland <juri@xxxxxxxxxxxxxx>
Date: Tue, 28 Aug 2001 16:21:54 +0200
Cc: linux-xfs@xxxxxxxxxxx
References: <news2mail-9meicg$5dr$1@xxxxxxxxxxxxxxxxx> <3B8BA114.7ED21B57@xxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
Eric Sandeen wrote:
> 
> Juri Haberland wrote:
> 
> > On all test I used the kgcc. Every time besides the last (2.4.9) test I
> > compiled the XFS-enabled kernel with kdb, but not even the kdb kicked in.
> >
> > Any hints on how to debug? I really would like to use XFS on this system...
> 
> hi Juri -
> 
> I really wouldn't suspect XFS, but it sounds like you do have it
> narrowed down.  :)
> 
> By complete lockup, do you mean NOTHING works, or is just the console
> hung up?  Can you access the machine over the network?  If so, can you
> see what is running via "ps" from a normal network login?

Unfortunately it is really a *complete* lockup. The host stops
immediately responding to pings :-(

> If you can't get to it over the network, what I would do is enable KDB,
> and hook up a serial console if you can... then when the machine locks
> up, invoke KDB yourself (CTRL-A on the serial console), and type "ps" to
> see what's running.  You could try hitting the "pause" key on the normal
> console, but if the machine is in X, you won't see the kdb prompt.

I will try that this evening.

Thanks,
Juri


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