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Message-ID: <20080307090257.GC24047@elte.hu>
Date: Fri, 7 Mar 2008 10:02:57 +0100
From: Ingo Molnar <mingo@...e.hu>
To: Jens Axboe <jens.axboe@...cle.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Linux 2.6.25-rc4
* Jens Axboe <jens.axboe@...cle.com> wrote:
> > no luck - a few hundred successful randconfig bootups overnight
> > (with a rather complex userspace startup to full X plus networking,
> > and the testbox is used via the network to compile the next random
> > kernel as well - etc.) and no failure at all. So there's not much we
> > can do at this point - i'll keep you updated if anything new happens
> > in the tests.
>
> OK, so it could possibly be something else or perhaps something that's
> existed for a long time.
>
> To capture vital debugging information for cases like this, I had an
> idea for a sysrq key that would dump queue and io scheduler info for
> all known block devices. That should help pin point where the problem
> lies. If we have any letters left in the sysrq namespace :-)
btw., we should reserve one sysrq letter as a "meta" character. If that
letter is 'X' [for Xtended SysRq] then SysRq-X SysRq-B could dump the
block info.
Ingo
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