From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Xen 3.3.1 latest / starting guests causes Oops in
	tapdisk?
Date: Thu, 28 May 2009 13:27:53 +0100
Message-ID: <C64441D9.C12E%keir.fraser@eu.citrix.com>
References: <afa5bb590905280514i3783f9b8p77200ad68e793a5d@mail.gmail.com>
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To: Ray Barnes <tical.net@gmail.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
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On 28/05/2009 13:14, "Ray Barnes" <tical.net@gmail.com> wrote:

> Problem is present using CentOS 5.x guests using the Cent kernel also.=A0 T=
he
> aforementioned domU is Debian 4 though.=A0 I've tried this under 3.3.1-rele=
ase
> and the latest 3.3.1 from xen-3.3-testing as of two days ago with the sam=
e
> result.=A0 I set maxium loop devices at 255 (was 8), no change.=A0 Also, afte=
r the
> Oops is triggered, I can no longer start domUs (even good ones which woul=
d
> otherwise not exhibit the problem), until after a reboot.=A0 Is this a Xen
> problem, or should I be looking at the OS or something else?

Probably it's a dom0 kernel issue, in the blktap device driver.

 -- Keir