On Fri, Apr 09, 2010 at 12:38:19AM +0200, Pim van Riezen wrote:
> On Apr 8, 2010, at 16:28 , Pasi Kärkkäinen wrote:
>
> On Thu, Apr 08, 2010 at 01:34:24AM +0200, Pim van Riezen wrote:
>
> We're trying to get 2.6.31 and 2.6.32 rolled out on our clusters to
> offer newer features like FUSE fo our customers, but we're ran into a
> couple of showstopper issues when deploying these kernels on busier
> guests, showing a lot of errors like this:
>
> Which exact kernel versions are you using? From which kernel
> tree/branch?
>
> The last we tried was 2.6.32.9 from [1]kernel.org. Had the same results
> with [2]kernel.org 2.6.31.5.
>
OK. Are your guests 32bit or 64bit?
I think 2.6.32.10 has the CONFIG_HIGHPTE fix.. so earlier versions will crash
if CONFIG_HIGHPTE is enabled for 32bit kernels.
> in our hope to get rid of this issue we upgraded from Xen 3.3 to Xen
> 3.4.1.7 out of the gitco repos. The issue persisted. Is there a magic
> version of Xen, preferably one that can be found in an rpm repository
> for CentOS 5, that *does* properly support pvops kernels without these
> issues?
>
> I've used Xen 3.4.2 and Xen 4.0.0 with pvops dom0 kernels.
> pvops dom0 2.6.32 kernels _require_ Xen 4.0.0 or Xen 3.4.3.
>
> That's what I understood, too. But then I ran into this:
> [root@sausage ~]# xm dmesg | grep Xen- | head -1
> (XEN) ----[ Xen-3.3.1 x86_64 debug=n Not tainted ]----
> [root@sausage ~]# xm create -c vps3510
> Using config file "/etc/xen/vps3510".
> Started domain vps3510
> Linux version 2.6.32.9xls-domU (root@pablo) (gcc version 4.3.3 (Ubuntu
> 4.3.3-5ubuntu4) ) #2 SMP Mon Apr 5 21:43:30 CEST 2010
> (...)
> CentOS release 5.4 (Final)
> Kernel 2.6.32.9xls-domU on an x86_64
>
> [3]vps3510.xlshosting.net login:
> Am I going mad? This is a vanilla kernel.
No, you're not mad.
pvops *dom0* 2.6.32 kernels require Xen 3.4.3 or Xen 4.0.0.
Vanilla pvops domU kernels from kernel.org don't require any specific new Xen
version.
> Are there any reliable RPM sources for 3.4.2?
>
Gitco has Xen 3.4.2 rpms.
-- Pasi
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