Re: kern/152818: [panic][xen] disk driver data cannot cross a page boundary

2010-12-03 Thread cperciva
Synopsis: [panic][xen] disk driver data cannot cross a page boundary

Responsible-Changed-From-To: freebsd-bugs->freebsd-xen
Responsible-Changed-By: cperciva
Responsible-Changed-When: Sat Dec 4 02:22:30 UTC 2010
Responsible-Changed-Why: 
Assign Xen bug to freebsd-xen for tracking.

http://www.freebsd.org/cgi/query-pr.cgi?pr=152818
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Re: Xen PV drivers for FreeBSD

2010-12-03 Thread Justin T. Gibbs
On Dec 3, 2010, at 4:12 AM, Yuriy Kohut  wrote:

> Hi,
> 
> I would not like to disturb you, but, have you a chance to reproduce the 
> issue ?

A FreeBSD stable/8 XENHVM kernel from yesterday functions properly for me in my 
Xen environment.

> The problem is not with CDROM device, but with boot process stops.

Did you remove the CDROM from the device configuration for your domain?   My 
host systems do not have CDROM devices to pass through, so I have not tested 
the impact of detecting a CDROM device on the FreeBSD XENHVM device probe 
process. 

In short, I understand that you are not directly complaining a about CDROM 
functionality, but my hunch is that the detection of a CDROM device is exposing 
a bug in the block front driver which leads to a hang during boot. 

--
Justin___
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Re: Xen PV drivers for FreeBSD

2010-12-03 Thread Yuriy Kohut
Hi,

I would not like to disturb you, but, have you a chance to reproduce the issue ?

The problem is not with CDROM device, but with boot process stops.
---
Yura

On Dec 1, 2010, at 10:31 PM, Justin T. Gibbs wrote:

> On 12/1/2010 4:52 AM, Yuriy Kohut wrote:
>> Hi,
>> 
>> Now your commit in place and I have built XENHVM on RELENG_8.
>> 
>> 
>> Some things are changed for me, but the issue still exists.
> 
> I will try to replicate your issues again later today.  One notable
> difference between my configuration and yours is that I am not passing
> through any cdrom devices.  I have no idea how well block front deals
> with cdroms.  My testing is on OpenSuSE 11.2 with Xen 4.0.0.
> 
> --
> Justin

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