Re: [Xen-devel] Re: [Xen-bugs] Re: [Xen-users] Network problem after updates

[Francisco Barrera <francisco.barrera@xxxxxxxxx>]

Hello Konrad,

I follow your suggestion and I downgrade the Xen dom0 and hipervisor to the 3.1.2 vesion and 2.6.18-194.3.1.el5xen kernel (versions by default in RHEL 3.5).

At this moment all works fine, but this message in /var/log/mesages worry me a lot:

pciback 0000:09:00.0: Driver tried to write to a read-only configuration space field at offset 0x4c, size 2. This may be harmless, but if you have problems with your device:
1) see permissive attribute in sysfs
2) report problems to the xen-devel mailing list along with details of your device obtained from lspci.

This is the same message that appears in the previous update to xen 3.4.1 that I did make, and at the moment to make it, all works fine also.
Then, after a lot of network traffic, the system began to freeze, as I describe in my first message.

The question is if I add the address in the message in the xend-pci-permissive file can solve this, or if I need to downgrade to lower version to avoid it.


Thanks for you answers.

Paco.



El mié, 16-06-2010 a las 11:50 -0400, Konrad Rzeszutek Wilk escribió:
> On Wed, Jun 16, 2010 at 05:24:39PM +0200, Francisco Barrera wrote:
> > Hi Konrad,
> > 
> > unfortunatelly I still have problems... the sames problems with the
> > network domU Firewall.
>
> You look to have a production type server,  so I would recommend you
> actually roll back. 
> > 
> > Then you propose me to update the dom0 kernel from 2.6.18-164.el5xen to
> > the latest version, isn't it?
>
> Yeah, but it might be lots of trouble for you (compiling, configuring,
> etc). 
> > And update the pv-ops also?
> > 
> > It's necessary update the domU kernel?
>
> No. The problem you are describing look to be in the netback driver.
> Thought I am not certain of why you are using the netback module when
> you pass in a NIC to the guest? Or does each guest have a bridge?

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Francisco Barrera

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