Re: [Xen-devel] Problem with Xen 4.1 on Ubuntu 11.10 ( Oneiric Ocelot) (HVM DomUs crash)

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

> Well, we can't reproduce this. You need to help us out here. How did you install
> Xen 4.1? Did you uninstall the _old_ version of Xen you had on your machine? If yes,
> how?

I installed Xen 4.1 and tools via system Manager - Synaptic Manager. It created
automatically grub2 entry for Xen.   I do have Xen Host to create and run PV domUs
F15,F14,SL 6.  Moreover F15 and SL6 ( this one pretty smoothly ) may be installed
via Virt-manager ( Libvirt 0.9.2). F14 in text mode, but this is not a problem to start
vncserver at DomU.
That is my environment :-
*******************************************************************************************************
root@boris-P5Q-E:~# xm info
host                   : boris-P5Q-E
release                : 3.0.0-5-generic
version                : #6-Ubuntu SMP Tue Jul 12 05:21:50 UTC 2011
machine                : x86_64
nr_cpus                : 2
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 2999
hw_caps                : bfebfbff:20100800:00000000:00000940:0008e3fd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 8191
free_memory            : 2078
free_cpus              : 0
xen_major              : 4
xen_minor              : 1
xen_extra              : .0
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
xen_commandline        : placeholder
cc_compiler            : gcc version 4.6.1 (Ubuntu/Linaro 4.6.0-10ubuntu2)
cc_compile_by          : zulcss
cc_compile_domain      : ubuntu.com
cc_compile_date        : Sat Jun  4 19:41:05 UTC 2011
xend_config_format     : 4
**************************************************************************************************
As soon as i try create create HVM DomU via standard profile. It even doesn't start. Nothing
is listening at localhost:5900


> So _which_ kernels/distros do work for you?

No one.

> I am really confused by your emails (you say F15 is not working, but the thread is about F14).

Thread  -   Per Jim@bellsouth :

According to several threads, such as mine last month - '[Xen-users]
Working with Fedora 15 & systemd' - and '[Xen-users] Problems
with HVM after upgrade from 4.0.1 to 4.1.1', and a private communication with
t.wagner in '[Xen-users] XEN-4.1.1 and linux kernel 3.0-rc5', and finally
'[Xen-users] Re: Trouble starting HVM domU with Linux 3.0.0 and Xen 4.1.1',

hvm & xen 4.1.x don't mix, either with kernel 3.0.0, or pvops 2.6.32 (which
was working with xen 4.0.2 prior to upgrading from fedora 14 to f15, and xen
4.1. In the last thread mentioned above, the solution was to upgrade to xen
4.2 unstable. My equally effective solution was to downgrade to xen 4.0.2,
since fedora rawhide doesn't have 4.2 yet.



Finally, from the Net comes the info that Xen 4.1 with 3.0.0-rc6 kernel creates Dom0
with no HVMs possible. No matter on top of what Linux this Dom0 lives.

In my case :
Ubuntu 11.10 alpha2 + upgrades up to 07/18/11

Boris.
P.S.     I tested Xen 4.2 Unstable ( same kernel 3.0.0.5-generic) on top of Ubuntu 11.10.
            HVM does work. It's easy to install and run as usual

--- On Tue, 7/19/11, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:

From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] Problem with Xen 4.1 on Ubuntu 11.10 ( Oneiric Ocelot) (HVM DomUs crash)
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "Stefano Stabellini" <stefano.stabellini@xxxxxxxxxxxxx>
Date: Tuesday, July 19, 2011, 1:09 PM

On Tue, Jul 19, 2011 at 09:22:13AM -0700, Boris Derzhavets wrote:
> Alpha 2 already has Xen 4.1 packaged and ready for testing.
> It appears to be known bug that HVM  DomUs crash at Xen 4.1 Dom0 with different "pvops''
> kernels ( in particular 3.0.0-5-generic Ubuntu) , but not only on Ubuntu .
> Here is report for Fedora 15 :
>
> http://www.gossamer-threads.com/lists/xen/users/213049?nohighlight=1#213049
>
> Ubuntu developers are pretty sure that Xen Host will be built with no problems.
> Would it  be possible to issue a patch for Xen  4.1 to fix the  problem ?

Well, we can't reproduce this. You need to help us out here. How did you install
Xen 4.1? Did you uninstall the _old_ version of Xen you had on your machine? If yes,
how?

So _which_ kernels/distros do work for you? I am really confused by your
emails (you say F15 is not working, but the thread is about F14).

> Actually two distros are affected Fedora 16 and Ubuntu 11.10 ( maybe Debian  - here
> i am not sure )

Wait, so is F16 (rawhide) also affected?
>
> Boris.
>
>
>
>

> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel


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