Re: [Xen-users] domU kernel from source capable of live migration

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Feb 24, 2011 at 06:07:44PM -0500, William L. Thomson Jr. wrote:
> On Mon, 2011-02-21 at 12:50 -0500, William L. Thomson Jr. wrote:
> >
> > Now some what unrelated I have a major problem with 2.6.37, where there
> > are issues with PMU. Which prevents networking from working, and the
> > system from mounting nfs root. This is not related to live migration,
> > just preventing me from trying newer sources that might be capable of
> > live migration. Likely a upstream issue not xen related, not sure.
> > 
> > On 2.6.36 I get the following for PMU
> > AMD PMU driver.
> > ... version:                0
> > ... bit width:              48
> > ... generic registers:      4
> > ... value mask:             0000ffffffffffff
> > ... max period:             00007fffffffffff
> > ... fixed-purpose events:   0
> > ... event mask:             000000000000000f
> > 
> > I use the same config from 2.6.36, but in 2.6.37 and now get
> > 
> > Broken PMU hardware detected, software events only.
> 
> Not sure if this is xen related or not, but I am getting the same with
> 2.6.38-rc6
> 
> Thinking I might need to take this up with kernel.org. Came across a
> post on RH's bugzilla that is similar[1]. Doesn't look to be using xen,
> not sure about other virtualization, and looks like networking might
> have been working for them.
> 
> My missing PMU or it being detected as broken I am pretty sure is
> preventing my domU from being able to get networking up and running.
> Might be something else, not sure. Thats the only difference I can see
> in dmesg between a working 2.6.36 kernel and the non-working 2.6.37 and
> 2.6.38-rc6 kernels.
> 
> Same config, but on any kernel past 2.6.36 I get no network, mounting of
> nfsroot fails, and no traffic is seen on the network coming from that
> domU in an attempt to mount nfsroot.
> 
>      1. https://bugzilla.redhat.com/show_bug.cgi?id=676527
> 

Hey,

Did you get this stuff working? 

-- Pasi


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