[Bug 1029889] Re: LVM Based KVM VM taking 100% CPU on first start and hangs.

[Lewdmole]

*** This bug is a duplicate of bug 1012946 ***
    https://bugs.launchpad.net/bugs/1012946

Still not fixed... I have found a workaround which was working (bellow) but now its not working anymore...
Same stuff like above in previous posts...

Someone spotted: 
Please note that if you want to create a qunatal or precise guest, you need to either add the option --addpkg=linux-image-generic or apply the patch from 
http://markmail.org/threadhg747mkmnkpy4icc#query:+page:1+mid:7rxyi4wjo6vkssh7+state:results 
because otherwise the build process will fail!!!

This KVM installation with VMBuilder is rotten somewhere deep in my opinion, it has never worked properly.
This is a different machine (X86_64) a lots of memory and space...

PROCEDURE TO INSTALL AS LVM WHICH WAS WORKING BEFORE...
1.) Instal VM as file based with --addpkg=linux-image-generic
2.) Wait for the install to finish...
3.) 
Afterwards, you can find an XML configuration file for the VM in /etc/libvirt/qemu/ 
(=> /etc/libvirt/qemu/vm4.xml):

root at host:~# ls -l /etc/libvirt/qemu/

This process will create VM image (qcow2) in /var/lib/libvirt/images/vm4
/ubuntu-kvm

root at host:~# cd /var/lib/libvirt/images/vm4/ubuntu-kvm

Now that we know the name of our image (tmp09XnBf.qcow2), we can convert
it as follows:

root at host:~# qemu-img convert tmp09XnBf.qcow2 -O raw /dev/virtualvg2/vm4

Afterwards you can delete the disk image:

root at host:~# rm -f tmp09XnBf.qcow2

Now we must modify the VM's configuration...

root at host:~# virsh edit vm4

... and change the following section...

-------------------------------------------------------------------------------------
[...]
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/vm4/ubuntu-kvm/tmp09XnBf.qcow2'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0' unit='0'/>
    </disk>
[...]
-------------------------------------------------------------------------------------

... so that it looks as follows:

-------------------------------------------------------------------------------------
[...]
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/dev/virtualvg2/vm4'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0' unit='0'/>
    </disk>
[...]
-------------------------------------------------------------------------------------

Now we activate the VM:

root at host:~# virsh --connect qemu:///system
virsh # define /etc/libvirt/qemu/vm4.xml
virsh # start vm4
Making VM survive host reboot
virsh # autostart vm4

Result now not working taking 100% cpu and hangs!

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to qemu-kvm in Ubuntu.
https://bugs.launchpad.net/bugs/1029889

Title:
  LVM Based KVM VM taking 100% CPU on first start and hangs.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1029889/+subscriptions