linux-kernel - Re: Re: i686 hang on boot in userspace

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Date:	Tue, 25 Jul 2006 09:32:08 +0200
From:	Jens Axboe <axboe@...e.de>
To:	gmu 2k6 <gmu2006@...il.com>
Cc:	Roman Zippel <zippel@...ux-m68k.org>, linux-kernel@...r.kernel.org
Subject: Re: Re: i686 hang on boot in userspace

On Mon, Jul 24 2006, gmu 2k6 wrote:
> the problem I have with hangs is related to changes in CFQ and that
> CFQ is now the default. 2.6.17-git12 had the problem but booting
> it with elevator=deadline fixes the hang.
> 
> symptoms encountered during git-bisecting between v2.6.17 and v2.6.18-rc1:
> A hang while starting network services
> B hang while trying to login
>   1 on remote console [not SSH] it hang after typing <uid><CR>
>   1 via OpenSSH it hang after typing <pwd><CR> when doing slogin root@<IP>
> 
> A is the problem I got in the first place and this seems to be the
> case since 2.6.17-git11 definitely although git-bisect pointed me at
> the following
> changeset which is included since 2.6.17-git12:
> 
> caaa5f9f0a75d1dc5e812e69afdbb8720e077fd3
> by Jens Axboe
> titled "[PATCH] cfq-iosched: many performance fixes"
> 
> strange enough it also hangs with 2.6.17-git11 which did not include that
> one changeset yet.

So perhaps your bisect isn't 100% trust worthy? Can you do a manual
-gitX bisect to see which 2.6.17-gitX introduced the problem?

Also please put a serial console or similar on the machine, so you can
log + store the sysrq+t output.

-- 
Jens Axboe

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