Re: [ANNOUNCE] kvm-kmod-2.6.32.2

[Avi Kivity <avi@redhat.com>]

On 12/24/2009 09:10 PM, Daniel Bareiro wrote:
>
> Can this version of kvm-kmod be used with any version of Linux kernel?
>    

Not any version, but most.


> I have Linux 2.6.32 in a host, but I suppose that considering, by the
> date of publication of kvm-kmod, that the provided modules by this
> package are newer and fix several bugs of the provided modules by Linux
> 2.6.32.
>    

kvm-kmod-2.6.32.2 contains the kvm modules from Linux 2.6.32.2.  You're 
better off installing Linux 2.6.32.2 instead of kvm-kmod-2.6.32.2 on top 
of Linux 2.6.32 (since you get non-kvm fixes as well).

> Also I have another host with Linux 2.6.30 and KVM-88, both compiled by
> myself in that order. Then I didn't know that the userspace and the
> kernel modules could be updated in independent form with qemu-kvm and
> kvm-kmod, respectively; so I suppose that when installing KVM-88 in
> second instance, it will have overwritten the newest modules of Linux
> 2.6.30. Is it correct? In this case, can have some problem installing
> kvm-kmod 2.6.32.2 with Linux 2.6.30?
>    

It should work without problems.

> Today I had a problem with one of the VMs running under this environment
> of kvm-88 + Linux 2.6.30 (with modules of kvm-88, if what I said before
> is correct). This is a VM that runs a Java application server with high
> rate of I/O.
>
> The server didn't respond reason according to it showed Nagios. When I
> acceded to host through the shell, it drew attention to me to see that
> uptime reflected about 14697 days! When trying to execute "top", the
> console was hung and I did not have another alternative that to do kill
> -9 of the process. This could have due to some bug of that version of
> KVM?
>    

Looks like time drift.  You should upgrade to more recent versions and 
report.

> Perhaps it is an obvious question, but during the update process of the
> modules, the virtual machines must be down?
>

You cannot rmmod the kvm modules while virtual machines are running.

-- 
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