ecrypting image file breaks efi/boot of the guest/Ubuntu - ?

[lejeczek]

On 11/04/2023 09:13, Peter Krempa wrote:
> On Sat, Apr 08, 2023 at 11:25:18 +0200, lejeczek wrote:
>> Hi guys.
>>
>> I've have a guest and that guest differs from all other guest by:
>>
>>    <os>
>>      <type arch='x86_64' machine='pc-q35-rhel9.0.0'>hvm</type>
>>      <loader readonly='yes' secure='yes'
>> type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.secboot.fd</loader>
>> <nvram>/var/lib/libvirt/qemu/nvram/ubusrv1_VARS.fd</nvram>
>>      <boot dev='hd'/>
>>      <bootmenu enable='yes'/>
>>    </os>
>>
>> whereas everything else has:
>>
>>    <os>
>>      <type arch='x86_64' machine='pc-q35-rhel9.0.0'>hvm</type>
>>      <boot dev='hd'/>
>>      <boot dev='cdrom'/>
>>      <bootmenu enable='yes'/>
>>    </os>
>>
>> Now, that different guest fails - as the only one - to start, to boot after
>> its qcow2 image was luks-encrypted.
>> Guest starts but says that:
>>
>> BdsDxe: failed to load Boot0001 "Uefi Misc Device" from PciRoot
>> (0x0)/Pci(0x2,0x3)/Pci(0x0,0x0): Not found
>>
>> revert back to original, non-encrypted qcow2 image and all works a ok.
> Please attach either the full XML or at least the disk part for *both*
> the case where it doesn't work and where it does work.
>
<domain type='kvm'>
   <name>ubusrv1</name>
   <metadata>
     <libosinfo:libosinfo 
xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
       <libosinfo:os id="http://ubuntu.com/ubuntu/22.04"/>
     </libosinfo:libosinfo>
   </metadata>
   <memory unit='GiB'>4</memory>
   <currentMemory unit='GiB'>4</currentMemory>
   <vcpu placement='auto' cpuset='2'>2</vcpu>
   <numatune>
     <memory mode='strict' placement='auto'/>
   </numatune>
   <os>
     <type arch='x86_64' machine='pc-q35-rhel9.0.0'>hvm</type>
     <loader readonly='yes' secure='yes' 
type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.secboot.fd</loader>
<nvram>/var/lib/libvirt/qemu/nvram/ubusrv1_VARS.fd</nvram>
     <boot dev='hd'/>
     <bootmenu enable='yes'/>
   </os>
   <features>
     <acpi/>
     <apic/>
     <vmport state='off'/>
     <smm state='on'/>
   </features>
   <cpu mode='custom' match='exact' check='partial'>
     <model fallback='forbid'>EPYC-Rome</model>
     <feature policy='require' name='ibpb'/>
     <feature policy='require' name='ssbd'/>
     <feature policy='require' name='virt-ssbd'/>
     <feature policy='require' name='x2apic'/>
     <feature policy='require' name='hypervisor'/>
     <feature policy='require' name='xsave'/>
     <feature policy='disable' name='svm'/>
     <feature policy='require' name='topoext'/>
     <feature policy='disable' name='npt'/>
     <feature policy='disable' name='nrip-save'/>
   </cpu>
   <clock offset='utc'>
     <timer name='rtc' tickpolicy='catchup'/>
     <timer name='pit' tickpolicy='delay'/>
     <timer name='hpet' present='no'/>
   </clock>
   <on_poweroff>destroy</on_poweroff>
   <on_reboot>restart</on_reboot>
   <on_crash>destroy</on_crash>
   <pm>
     <suspend-to-mem enabled='no'/>
     <suspend-to-disk enabled='no'/>
   </pm>
   <devices>
     <emulator>/usr/libexec/qemu-kvm</emulator>
     <disk type='file' device='disk'>
       <driver name='qemu' type='qcow2' cache='none' 
discard='unmap'/>
       <source file='/00-VMs/ubusrv1.qcow2'/>
       <target dev='vda' bus='virtio'/>
       <address type='pci' domain='0x0000' bus='0x04' 
slot='0x00' function='0x0'/>
     </disk>
...

When I add encryption to <disk> & use encrypted qcow2 then 
VM fails as I described.

many thanks, L.