libvirt users - Feb 2012 - Problems running virtual machines after an upgrade

Hi all,

 I upgraded qemu-kvm and libvirt to the new versions
 qemu-kvm at : 1.0
 libvirt at          : git version 0.9.10

I lost the original machines but the xml files were are all present (it
is not showing up in virsh list --all)

But when I import an xml I get an error: Attached is some information
which might be helpful
Can someone help please ?

If this is a compatibility issue please can someone tell me which is the
latest version of qemu-kvm and libvirt combination which will work ?
I cannot use qemu plain since it does not yet support boot from scsi

thanks

-----------------------------------------------
$ sudo virsh list --all
 Id    Name                           State
----------------------------------------------------

$ lsmod | grep kvm
kvm_intel             112920  0
kvm                   280656  1 kvm_intel
             
$ /usr/local/sbin/libvirtd --version
/usr/local/sbin/libvirtd (libvirt) 0.9.10

$ ./qemu-system-x86_64 --version
QEMU emulator version 1.0-bcv (qemu-kvm-1.0), Copyright (c) 2003-2008
Fabrice Bellard
 
$ sudo virsh define ./debian.xml
error: Failed to define domain from ./debian.xml
error: unknown OS type hvm

$ cat debian.xml
<domain type='kvm'>
  <name>debian</name>
  <uuid>0aab8869-ff87-14ce-a00b-944cdca7acf7</uuid>
  <memory>524288</memory>
  <currentMemory>524288</currentMemory>
  <vcpu cpuset='6-7'>2</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='6'/>
    <vcpupin vcpu='1' cpuset='7'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-0.14'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <cpu match='exact'>
    <model>core2duo</model>
    <vendor>Intel</vendor>
    <topology sockets='1' cores='2' threads='1'/>
    <feature policy='disable' name='lahf_lm'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='hpet' tickpolicy='catchup'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/local/bin/kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/VIRT/disks/DEBIAN'/>
      <target dev='sda' bus='scsi'/>
      <address type='drive' controller='0' bus='0'
unit='0'/>
    </disk>
    <disk type='block' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <target dev='hdc' bus='ide'/>
      <readonly/>
      <address type='drive' controller='0' bus='1'
unit='0'/>
    </disk>
    <controller type='scsi' index='0'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x04'
function='0x0'/>
    </controller>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x01'
function='0x1'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:71:62:f3'/>
      <source bridge='virt'/>
      <model type='e1000'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x03'
function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes'
keymap='en-gb'/>
    <sound model='ich6'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x06'
function='0x0'/>
    </sound>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x02'
function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x05'
function='0x0'/>
    </memballoon>
  </devices>
</domain>






-- 
Bhasker C V

On 02/25/2012 06:55 AM, Bhasker C V wrote:
> Hi all,
> 
>  I upgraded qemu-kvm and libvirt to the new versions
>  qemu-kvm at : 1.0
>  libvirt at          : git version 0.9.10
Which distro are you using?  Did you self-build libvirt?
> 
> I lost the original machines but the xml files were are all present (it
> is not showing up in virsh list --all)
This might be a case of virsh picking up a different default URI, based
on what support you built into libvirt.

Try 'virsh uri' to see what your default URI is.  If it is not
'qemu:///system', then that explains your symptoms, and using 'virsh
-c
qemu:///system list --all' will restore your listing abilities.  You can
export VIRSH_DEFAULT_CONNECT_URI so you don't have to use virsh -c every
time.
> 
> But when I import an xml I get an error: Attached is some information
> which might be helpful
> Can someone help please ?
> 
> If this is a compatibility issue please can someone tell me which is the
> latest version of qemu-kvm and libvirt combination which will work ?
The versions you have listed should be compatible (there was an issue
where older libvirt didn't like the newer qemu 1.0 versioning scheme,
but that has been fixed).
> $ /usr/local/sbin/libvirtd --version
> /usr/local/sbin/libvirtd (libvirt) 0.9.10
> 
> $ ./qemu-system-x86_64 --version
That's a different executable...
> QEMU emulator version 1.0-bcv (qemu-kvm-1.0), Copyright (c) 2003-2008
> Fabrice Bellard
>  
> $ sudo virsh define ./debian.xml
> error: Failed to define domain from ./debian.xml
> error: unknown OS type hvm
> 
> $ cat debian.xml
> <domain type='kvm'>
...
>   <devices>
>     <emulator>/usr/local/bin/kvm</emulator>
...than what you are testing here.  It may be that you are telling
libvirt to use the wrong binary, and that might be the source of your
error message.

Also, you may want to check out the troubleshooting wiki page, to see if
anything there helps your situation (and if not, feel free to add a page
as we figure out what's happening for you):
http://wiki.libvirt.org/page/Troubleshooting

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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On Sat, Feb 25, 2012 at 13:55:08 +0000, Bhasker C V
wrote:
> Hi all,
> 
>  I upgraded qemu-kvm and libvirt to the new versions
>  qemu-kvm at : 1.0
>  libvirt at          : git version 0.9.10
> 
> I lost the original machines but the xml files were are all present (it
> is not showing up in virsh list --all)
> 
> But when I import an xml I get an error: Attached is some information
> which might be helpful
> Can someone help please ?
> 
> If this is a compatibility issue please can someone tell me which is the
> latest version of qemu-kvm and libvirt combination which will work ?
> I cannot use qemu plain since it does not yet support boot from scsi
> 
> thanks
> 
> -----------------------------------------------
> $ sudo virsh list --all
>  Id    Name                           State
> ----------------------------------------------------
> 
> $ lsmod | grep kvm
> kvm_intel             112920  0
> kvm                   280656  1 kvm_intel
>              
> $ /usr/local/sbin/libvirtd --version
> /usr/local/sbin/libvirtd (libvirt) 0.9.10
> 
> $ ./qemu-system-x86_64 --version
> QEMU emulator version 1.0-bcv (qemu-kvm-1.0), Copyright (c) 2003-2008
> Fabrice Bellard
Hmm, I suspect "1.0-bcv" version is not in the form we expect it to
be. The
"-bcv" suffix causes this binary to be detected as qemu only, i.e.,
not kvm
capable... Which is wrong, btw, we should be detecting kvm capability by
checking -enable-kvm or -disable-kvm options since even plain qemu can use
kvm.

Jirka