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

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Tue, May 25, 2010 at 05:04:56PM +0200, Francisco Barrera wrote:
> Can anybody help me with this problem?

Are you still having problems?

Granted you are using an ancient kernel so I fear I can't help you much.
If you updated to the latest pv-ops...

> 
> 
> El lun, 24-05-2010 a las 12:20 +0200, Francisco Barrera escribió:
> 
> > Hi all,
> > 
> > I've a serious problem with my dom0 xen installation, that's why I'm
> > blocked to daily work.
> > I come to describe my virtualization scenary and the arised problem.
> > 
> > Hardware is a Dell server with 3 physicall ethernet network cards and
> > 16 GB RAM.
> > Initially installed CentOS-5.2 with Xen-3.0.3 and 2.6.18-128.el5xen
> > kernel.
> > Dom0 with 7 domU paravirtuallized (they have CentOS like os also).
> > One domU is configured like a Firewall, using one of the physicall
> > NICs through pciback, that directly connect with the ISP modem-router.
> > Until here all worked ok and I was happy :)
> > 
> > Later, I was made the next updates through "yum update/upgrade" and
> > "yum install Virtualization": Xen 3.4.1 version, CentOS-5.4 and
> > 2.6.18-164.el5xen kernel.
> > Initially all worked fine, except some stuffs related to bridge name
> > (it came to xenbr0 to eth0).
> > The problem arise when from certain day, the network was freezed,
> > collapsed.
> > Anything of the domUs can answer to ping command, except dom0 that is
> > the only I can access via ssh.
> > Testing some issues, the network recovers if I shutdown the domU
> > Firewall.
> > 
> > I guess that the source of the problem must be pciback kernel module
> > or some incompatibillity with network card driver.
> > I've configured the xend-pci-permissive.sxp file to fix some messages
> > that appears in the boot of the dom0.
> > 
> > The conclusions that I've get analyzing the situation are the next:
> > - at the begining, Firewall works ok since it's overloaded by net
> > traffic
> > - from this moment, exactly 1 hour later from boot/reboot of dom0, the
> > network is blocked...always
> > - once the network is blocked, if I've shutdown the Firewall, the
> > network recovers
> > - when much time the network is blocked, more time the Firewall takes
> > to shutdown
> > 
> > Any suggestion?
> > Thanks in advance.
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
> 
> 
> --------------------------------------------
> empelt
> Francisco Barrera
> 
> Móvil - +34 659253221
> francisco.barrera@empelt.es
> http://www.empelt.es
> 
> 
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