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Re: [Libguestfs] disable kvm support



Yeswanth,

Below you can find an example of such wrapper:

#!/bin/sh

if [ "`echo "$@" | grep "kvm" | wc -l`" -eq "1" ]; then
  args=( "$@" "-no-kvm" )
else
  args=( "$@" )
fi

if [ "`uname -a | grep x86_64 | wc -l`" -eq "1" ]; then
  bin=/usr/bin/qemu-system-x86_64
else
  bin=/usr/bin/qemu
fi

exec $bin "${args[ ]}"

This isn't awesome piece of code and may have a different behavior than you expect (for example if your disk contains 'kvm' in the name). But it's a good start for you.

HTH

--Marek

On 9 lip 2011, at 00:05, Richard W.M. Jones wrote:

> On Fri, Jul 08, 2011 at 12:26:27AM +0530, yeswanth swami wrote:
>> Hi,
>> whenever I perform 'launch' operation to launch a disk, guestfs looks for
>> KVM support and prints this message "Could not initialize KVM, will disable
>> KVM support" . Is there a way to turn it off.. I dont want guestfs to look
>> for KVM .
> 
> This message probably comes from your KVM binary.  I'm curious why you
> want to disable KVM, since it's transparent and just makes things
> faster (if available).
> 
> Anyway, if you want to remove this sort of message, you have to write
> a "qemu wrapper".  This is just a short piece of shell script which
> edits the parameters that are passed to QEMU.  Boxgrinder, for
> example, contains one of these because of problems launching KVM on
> Amazon EC2 guests.
> 
> See:
> 
> http://libguestfs.org/guestfs.3.html#qemu_wrappers
> http://libguestfs.org/guestfs.3.html#guestfs_set_qemu
> http://libguestfs.org/guestfs.3.html#libguestfs_qemu
> 
> Rich.
> 
> -- 
> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
> Read my programming blog: http://rwmj.wordpress.com
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