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SubjectRe: complete IO hang since a few kernel revision
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On Tue, 2009-10-06 at 16:16 +0900, Norbert Preining wrote:
> On Tue, 06 Oct 2009, Mike Galbraith wrote:
> > I've tried unsuccessfully to reproduce this behavior.
> >
> > Since it doesn't appear to be something readily reproducible, more
> > information and/or some digging on your part may be needed.
>
> Hm, how could I do that? I am fine with compiling some strange
> kernel options, or running some debugging task, but I don't have
> and netconsole or serial console available.

Locating when it started for you would be valuable, even if it's not
pin-pointed such as a git bisection could do. A bisection is the best
bet to nail it down, but can be quite time consuming.

One thing you can try is to drop to a non-gui shell, and see it the
symptom is reproducible without the GUI. If it is, poke SysRq-W while
things are thoroughly jammed up, and post the output+config here.

-Mike



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