[Pkg-libvirt-maintainers] Bug#655460: Bug#655460: misleading error message on missing br0 interface

[Guido Günther]

On Wed, Jan 11, 2012 at 12:39:14PM +0100, Harald Dunkel wrote:
> Package: virtinst
> Version: 0.600.0-1
> 
> I missed to define a local "br0" network interface on my new KVM
> server. When I tried to create a new machine using an existing
> host.xml file listing "br0" as a network interface I got an
> error message about an inaccessible disk image instead.
> 
> # export VIRSH_DEFAULT_CONNECT_URI=qemu:///system
> # masterhost=dpcl082
> # master=openSUSE-11.3-i386-template
> # name=sepos11i004
> # virsh vol-create-as storage ${name}.vda.lv 32G
> # ssh ${masterhost} dd if=/dev/storage/${master}.vda.lv bs=64k | dd bs=64k of=/dev/storage/${name}.vda.lv
> # virt-clone --connect ${VIRSH_DEFAULT_CONNECT_URI} --original-xml=/tmp/${master}.xml --name=${name} --file=/dev/storage/${name}.vda.lv --preserve-data
> ERROR    Could not determine original disk information: Size must be specified for non existent volume path '/dev/storage/openSUSE-11.3-i386-template.vda.lv'
> 
> 
> After setting up the br0 interface the error message about
> the disk was gone, so there is something weird.

I can't seem to reproduce this with your XML, libvirt 0.9.9-1 and and
virtinst 0.600.0 and no br0 either. Looking at the virtinst code the
error seems to be coming down from libvirt so in case you can still
reproduce this the remotes side libvirt.log might have some more
information.
Cheers,
 -- Guido

> 
> Debug output:
> 
> [Wed, 11 Jan 2012 12:15:42 virt-clone 2001] ERROR (cli:440) Could not determine original disk information: Size must be specified for non existent volume path '/dev/storage/openSUSE-11.3-i386-template.vda.lv'
> [Wed, 11 Jan 2012 12:15:42 virt-clone 2001] DEBUG (_util:233) Traceback (most recent call last):
>   File "/usr/bin/virt-clone", line 253, in <module>
>     main()
>   File "/usr/bin/virt-clone", line 232, in main
>     design.setup_original()
>   File "/usr/lib/pymodules/python2.6/virtinst/CloneManager.py", line 409, in setup_original
>     self._original_virtual_disks = self._get_original_devices_info(self._original_xml)
>   File "/usr/lib/pymodules/python2.6/virtinst/CloneManager.py", line 617, in _get_original_devices_info
>     "information: %s" % str(e)))
> ValueError: Could not determine original disk information: Size must be specified for non existent volume path '/dev/storage/openSUSE-11.3-i386-template.vda.lv'
> 
> 
> Regards
> 
> Harri

> <domain type='kvm'>
>   <name>openSUSE-11.3-i386-template</name>
>   <uuid>02752285-6e64-d4ab-100a-7eb62832d724</uuid>
>   <description>openSUSE 11.3 template</description>
>   <memory>1048576</memory>
>   <currentMemory>1048576</currentMemory>
>   <vcpu>1</vcpu>
>   <os>
>     <type arch='x86_64' machine='pc-0.12'>hvm</type>
>     <boot dev='hd'/>
>   </os>
>   <features>
>     <acpi/>
>     <apic/>
>     <pae/>
>   </features>
>   <clock offset='utc'/>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>restart</on_crash>
>   <devices>
>     <emulator>/usr/bin/kvm</emulator>
>     <disk type='block' device='disk'>
>       <driver name='qemu' type='raw' cache='none'/>
>       <source dev='/dev/storage/openSUSE-11.3-i386-template.vda.lv'/>
>       <target dev='vda' bus='virtio'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
>     </disk>
>     <disk type='file' device='cdrom'>
>       <driver name='qemu' type='raw' cache='none'/>
>       <target dev='hdc' bus='ide'/>
>       <readonly/>
>       <address type='drive' controller='0' bus='1' unit='0'/>
>     </disk>
>     <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:e5:54:a1'/>
>       <source bridge='br0'/>
>       <model type='virtio'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
>     </interface>
>     <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-us'/>
>     <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='0x03' function='0x0'/>
>     </memballoon>
>   </devices>
> </domain>
> 

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