From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nivedita Singhvi Subject: Re: DomU crashing on x86 Date: Wed, 13 Jul 2005 14:55:40 -0700 Message-ID: <42D58DDC.1090000@us.ibm.com> References: <1121291042.5164.12.camel@thinkpad.austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1121291042.5164.12.camel@thinkpad.austin.ibm.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: David F Barrera Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org David F Barrera wrote: > We are seeing a problem in xen-unstable where DomU crashes immediately > after booting on some x86 boxes. In my case, it is happening on a coupl= e > of machines that have SCSI drives and where DomU is a SLES 9 > installation. Here's some data on my setup: >=20 > Dom0 DomU Dom U Crash? SCSI >=20 > Machine A SLES 9 SLES 9 Yes Yes > Machine B SLES 9 RHEL 4 No Yes > Machine C RHEL 4 SLES 9 Yes Yes > Machine D FC3 SLES 9 and Debian No No > =09 > The only thing I see in common in the machines that fail is the SCSI > drives. Machines B and C are identical; the others are different > models. Dave, what are your boot options? thanks, Nivedita > This is the Oops info that I am seeing (no other info is displayed): >=20 > Oops: 0002 [#1] > PREEMPT SMP modules linked in: > CPU: 0 > EIP: 0061:[<00244ec0>] Not tainted VLI >=20 >=20 > David Wolinsky (david_wolinsky@dell.com) has also reported seeing the > problem: >=20 > ------- Additional Comments From david_wolinsky@dell.com 2005-07-13 > 21:26 ------- > I put together a testing suite to figure out the problem=E2=80=A6 and i= t seems > related=20 > to two parts of my machine. >=20 > A) Fedora Core 3 > B) SATA drive (as you are probably aware these use the same scsi > driver) >=20 > To test A out, I installed Debian (known for its stability, etc)=E2=80=A6= And > ran with=20 > SATA in SATA mode and in IDE emulation mode (cominbation mode as listed > in the=20 > bios)=E2=80=A6 both tests passed (not concrete, I only ran it as long a= s I had > known=20 > the test of Fedora Core to last=E2=80=A6 I'll run it over night for 100= %). =20 >=20 > To test B out, I set my SATA mode into IDE emulation mode and ran it in > FC3,=20 > this time it crashed the DomU and not Dom0. >=20 > My conclusion is... an issue between the SCSI driver, Xen hypervisor, > and the=20 > memory driver > -------------------end of David Wolinsky's comments --------------- >=20 > Has anyone else observed this problem? I believe this is a serious > problem that requires some attention. >=20