Re: [libvirt-users] Problems with libvirt / qemu

[Brian Jackson <iggy@theiggy.com>]

On Monday, October 11, 2010 11:57:27 am Dan Johansson wrote:
> Yes, the image contains an OS (it works if I start the guest manually).
> 
> On Monday 11 October 2010 03.41:29 jbuy0710 wrote:
> > The image contains an OS or not?
> > If not, you can't choose to boot from disk like "<boot dev='hd'/>"
> > 
> > 2010/10/10 Dan Johansson <kvm@dmj.nu>:
> > > HI,
> > > 
> > > I have a small problem with libvirt / qemu. I have created a guest and
> > > when I start it from the command-line the guests starts OK, but when I
> > > start the guest through libvirt with "virsh start" I get "Booting from
> > > Hard Disk... Boot failed: not a bootable disk
> > > No bootable device"
> > > 
> > > This is the command-line I use to start the guest (which works)
> > > "cd /var/lib/kvm/Wilmer;  /usr/bin/qemu-system-x86_64 --enable-kvm \
> > > 
> > >        -net nic,vlan=1,model=rtl8139,macaddr=DE:ED:BE:EF:01:03 -net
> > >        tap,vlan=1,ifname=qtap13,script=no,downscript=no \ -net
> > >        nic,vlan=3,model=rtl8139,macaddr=DE:ED:BE:EF:03:03 -net
> > >        tap,vlan=3,ifname=qtap33,script=no,downscript=no \ -m 2048 -k
> > >        de-ch -vnc :3 -daemonize \
> > >        Wilmer.qcow2"


My guess would be that libvirt is using the -drive syntax with if=ide and 
boot=on. Those 2 options together are known to be broken in certain versions 
of qemu/kvm. You can find out by checking in the libvirt logs to see what kvm 
command it's running to start the guest.


> > > 
> > > The libvirt XML-file was created using "virsh domxml-from-native
> > > qemu-argv" and this is the result of that conversion: <domain
> > > type='kvm'>
> > > 
> > >  <name>wilmer</name>
> > >  <uuid>a421968d-0573-1356-8cb7-32caff525a03</uuid>
> > >  <memory>2097152</memory>
> > >  <currentMemory>2097152</currentMemory>
> > >  <vcpu>2</vcpu>
> > >  <os>
> > >  
> > >    <type arch='x86_64' machine='pc-0.12'>hvm</type>
> > >    <boot dev='hd'/>
> > >  
> > >  </os>
> > >  <features>
> > >  
> > >    <acpi/>
> > >  
> > >  </features>
> > >  <clock offset='utc'/>
> > >  <on_poweroff>destroy</on_poweroff>
> > >  <on_reboot>restart</on_reboot>
> > >  <on_crash>destroy</on_crash>
> > >  <devices>
> > >  
> > >    <emulator>/usr/bin/qemu-system-x86_64</emulator>
> > >    <disk type='file' device='disk'>
> > >    
> > >      <source file='/var/lib/kvm/Wilmer/Wilmer.qcow2'/>
> > >      <target dev='hda' bus='ide'/>
> > >      <address type='drive' controller='0' bus='0' unit='0'/>
> > >    
> > >    </disk>
> > >    <controller type='ide' index='0'>
> > >    
> > >      <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> > >      function='0x1'/>
> > >    
> > >    </controller>
> > >    <interface type='ethernet'>
> > >    
> > >      <mac address='de:ed:be:ef:01:03'/>
> > >      <script path='no'/>
> > >      <target dev='qtap13'/>
> > >      <model type='rtl8139'/>
> > >      <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> > >      function='0x0'/>
> > >    
> > >    </interface>
> > >    <interface type='ethernet'>
> > >    
> > >      <mac address='de:ed:be:ef:03:03'/>
> > >      <script path='no'/>
> > >      <target dev='qtap33'/>
> > >      <model type='rtl8139'/>
> > >      <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> > >      function='0x0'/>
> > >    
> > >    </interface>
> > >    <input type='mouse' bus='ps2'/>
> > >    <graphics type='vnc' port='5903' autoport='no' listen=''/>
> > >    <video>
> > >    
> > >      <model type='cirrus' vram='9216' heads='1'/>
> > >      <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
> > >      function='0x0'/>
> > >    
> > >    </video>
> > >  
> > >  </devices>
> > > 
> > > </domain>
> > > 
> > > 
> > > Anyone seeing something obvious that I have missed?
> > > 
> > >  Regards,
> > > 
> > > --
> > > Dan Johansson, <http://www.dmj.nu>
> > > ***************************************************
> > > This message is printed on 100% recycled electrons!
> > > ***************************************************
> > > 
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