Fedora 11/12 kernels as xen domU

[Norman Gaywood]

Is anyone having any stability with the fedora kernels running as a Xen
DomU. Dom0 is a Centos 5.4 2.6.18-164.9.1.el5xen kernel.

These fedora kernels seem to lockup (processes get stuck in D state)
whenever put under any load:

kernel-2.6.30.10-105.fc11.x86_64
kernel-2.6.31.6-166.fc12.x86_64
kernel-2.6.31.9-174.fc12.x86_64

Yes, I tried a fedora 11 kernel on a fedora 12 system. This is the most
stable for me.

Here are some bugzilla entries (one posted by me) that point to this
problem:

kernel 2.6.31 processes lock up in D state
https://bugzilla.redhat.com/show_bug.cgi?id=550724

FC12 2.6.31.9-174.fc12.x86_64 hangs under heavy disk I/O
https://bugzilla.redhat.com/show_bug.cgi?id=551552

[Pasi Kärkkäinen]

On Sun, Jan 03, 2010 at 10:19:40AM +1100, Norman Gaywood wrote:
> Is anyone having any stability with the fedora kernels running as a Xen
> DomU. Dom0 is a Centos 5.4 2.6.18-164.9.1.el5xen kernel.
>
> These fedora kernels seem to lockup (processes get stuck in D state)
> whenever put under any load:
>
> kernel-2.6.30.10-105.fc11.x86_64
> kernel-2.6.31.6-166.fc12.x86_64
> kernel-2.6.31.9-174.fc12.x86_64
>
> Yes, I tried a fedora 11 kernel on a fedora 12 system. This is the most
> stable for me.
>
> Here are some bugzilla entries (one posted by me) that point to this
> problem:
>
> kernel 2.6.31 processes lock up in D state
> https://bugzilla.redhat.com/show_bug.cgi?id=550724
>
> FC12 2.6.31.9-174.fc12.x86_64 hangs under heavy disk I/O
> https://bugzilla.redhat.com/show_bug.cgi?id=551552

I know Jeremy is away on vacation atm, but hopefully he can comment
about these when he gets back.

Jeremy: Have you seen this kind of domU problem reports earlier ?

-- Pasi