From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Xen 4.0.0-rc5 with xen/stable 2.6.32.9 dom0	kernel,
	blktap2, relative mouse
Date: Thu, 04 Mar 2010 10:22:20 -0800
Message-ID: <4B8FFA5C.2090201@goop.org>
References: <20100304154421.GA2761@reaktio.net>
	<20100304155154.GB2761@reaktio.net>
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To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= <pasik@iki.fi>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

On 03/04/2010 07:51 AM, Pasi K=E4rkk=E4inen wrote:
> On Thu, Mar 04, 2010 at 05:44:21PM +0200, Pasi K=E4rkk=E4inen wrote:
>   =20
>> Hello,
>>
>> I just tried running Xen 4.0.0-rc5 (64bit) with latest xen/stable 2.6.=
32.9 dom0 kernel (64bit aswell).
>> System boots up fine, and I'm able to run PV guests using phy: disk ba=
ckend (lvm volumes).
>>
>> I tried using tap:aio: file-based storage with virt-manager for a PV g=
uest.
>> It seems it doesn't really work, the guest waits for a long time
>> initializing disk drivers/devices, and then complains about not having=
 any disks.
>>
>> $ xm list -l testfoo
>> ..
>>      (device
>>          (tap
>>              (protocol x86_64-abi)
>>              (uuid f7723325-9ff4-96f7-0808-9ec05a00a4b8)
>>              (bootable 1)
>>              (dev xvda:disk)
>>              (uname tap:aio:/var/lib/libvirt/images/testfoo.img)
>>              (mode w)
>>              (backend 0)
>>              (VDI )
>>          )
>>      )
>>
>> Am I supposed to have that 'uname' there? This could be a problem with=
 virt-manager or libvirt,
>> so I'll try with plain normal /etc/xen/ cfgfiles next..
>>
>>     =20
> Hmm, it seems phy: based guest has that 'uname' aswell:
>
>      (device
>          (vbd
>              (protocol x86_64-abi)
>              (uuid b7c115d7-138a-5cd0-a179-3038ba49d349)
>              (bootable 1)
>              (devid 51712)
>              (driver paravirtualised)
>              (dev xvda:disk)
>              (uname phy:/dev/vg_f12test/f12test)
>              (mode w)
>              (backend 0)
>          )
>      )
>
> So I guess that's all fine.
>
> What's the best way to troubleshoot the blktap2 problem?
>
> I have 'blktap' module loaded in dom0, and xen 4.0.0-rc5
> should have the required blktap2 tools..
>   =20

I haven't had any problems with blktap2 at all lately, using the xend/xm=20
toolstack.  Are there any messages in the various logfiles and/or kernel=20
which might indicate a problem?

     J