Problems with libvirt / qemu

libvirt-users Dan Johansson 2 participants 2 messages Oct 11, 2010 2 messages not in the archive KVM

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Dan Johansson

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2010-10-11 17:04 UTC #2 lore raw

Yes, the image contains an OS (it works if I start the guest manually).

Quoted 85 lines · 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 <[email protected]>:
Quoted 80 lines
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"
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>
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Dan Johansson, <http://www.dmj.nu>
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Brian Jackson

2010-10-11 20:10 UTC #3 lore raw

Quoted 24 lines · Dan Johansson

Yes, the image contains an OS (it works if I start the guest manually).
Quoted 21 lines · 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 <[email protected]>:
Quoted 17 lines
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.

Quoted 90 lines

Quoted 90 lines
Quoted 90 lines
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!
***************************************************
_______________________________________________
libvirt-users mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/libvirt-users