KVM: create new guest from existing qcow2

FATeknollogee

What's the trick to creating a new guest from an existing .qcow2 image?
This is a Fedora26 image (firmware/chipset: EFI/Q35)

Using virt-manager, creating new vm & selecting existing image does not work.
I get an error "System BootOrder not found"

stacksofplates

@fateknollogee said in KVM: create new guest from existing qcow2:

What's the trick to creating a new guest from an existing .qcow2 image?
This is a Fedora26 image (firmware/chipset: EFI/Q35)

Using virt-manager, creating new vm & selecting existing image does not work.
I get an error "System BootOrder not found"

It's either what you've done or using virt-install and using the existing disk. I'd check the boot order in virt-manager. If that doesn't work it might be the image.

FATeknollogee

Boot order is set correctly in virt-manager.
The image worked in a previous Fedora 25 install.
I re-installed the o/s (F25 to F26), the qcow2 images were on a separate disk.

stacksofplates

Did you try passing through the host CPU type?

FATeknollogee

@stacksofplates said in KVM: create new guest from existing qcow2:

Did you try passing through the host CPU type?

Have not tried that yet

stacksofplates

I would also try switching to a non pv driver. If it boots with a normal SCSI driver then it's probably virtio.

PenguinWrangler

Do you have access to the original host?

Emad R

@fateknollogee

In Virt Manager you have the following options:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Getting_Started_Guide/images/virt-manager_create_step1.png

choose Import existing disk image, instead of re-creating the VM then selecting the disk image.

That never failed me, and if it fails on your machine, what is the error ?
sometimes the console of Virt Manager will be blank, it happens, close it and re-open it.

FATeknollogee

@penguinwrangler said in KVM: create new guest from existing qcow2:

Do you have access to the original host?

The orig host is no more.

FATeknollogee

@emad-r said in KVM: create new guest from existing qcow2:

@fateknollogee

In Virt Manager you have the following options:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Getting_Started_Guide/images/virt-manager_create_step1.png

choose Import existing disk image, instead of re-creating the VM then selecting the disk image.

That never failed me, and if it fails on your machine, what is the error ?
sometimes the console of Virt Manager will be blank, it happens, close it and re-open it.

This ^^ is exactly what I did.
Error is "System BootOrder not found"

PenguinWrangler

@fateknollogee okay. I was going to suggest if it was available that you do an export: virsh dumpxml vmname > vmname.xml then move the hard drives and the xml to the new host and do an import: virsh net-define vmname.xml

Emad R

@fateknollogee said in KVM: create new guest from existing qcow2:

System BootOrder not found"

System BootOrder not found seems to be EFI related.

Can you try playing with those setting in Virt manager, there was an option to alternate between both (EFI and legacy BIOS)

And if you are testing and have free time , and the VM you are importing was EFI, can you try re-creating in standard BIOS mode and try again to import and see if that changes anything.

FATeknollogee

@emad-r said in KVM: create new guest from existing qcow2:

@fateknollogee said in KVM: create new guest from existing qcow2:

System BootOrder not found"

System BootOrder not found seems to be EFI related.

Can you try playing with those setting in Virt manager, there was an option to alternate between both (EFI and legacy BIOS)

And if you are testing and have free time , and the VM you are importing was EFI, can you try re-creating in standard BIOS mode and try again to import and see if that changes anything.

In BIOS mode, it says "Booting from Hard Disk..." with a flashing cursor...no progress after that.

The image was definitely created as EFI.

FATeknollogee

@stacksofplates said in KVM: create new guest from existing qcow2:

I would also try switching to a non pv driver. If it boots with a normal SCSI driver then it's probably virtio.

No go, same error.

FATeknollogee

@stacksofplates said in KVM: create new guest from existing qcow2:

Did you try passing through the host CPU type?

Yes, error is still the same.

Francesco Provino

Have you tried virt-install and its switches?

FATeknollogee

@francesco-provino said in KVM: create new guest from existing qcow2:

Have you tried virt-install and its switches?

I tried virt-install & created a new vm using the qcow2 image, that did not work either.

Emad R

@fateknollogee

I tried installing Centos on UEFI and then enabling KVM to trouble-shoot your issue, however when I wanted to create new EFI Q35 VM it complained that I dont have EFI packages, so I was unable to change the VM from BIOS:

I440FX
to
Q35

Using Virt Manager, did you do anything special on the host KVM or to qemu to enable EFI Q35 ? or you were able to select it from the start ?

thanks.

FATeknollogee

@emad-r said in KVM: create new guest from existing qcow2:

@fateknollogee

I tried installing Centos on UEFI and then enabling KVM to trouble-shoot your issue, however when I wanted to create new EFI Q35 VM it complained that I dont have EFI packages, so I was unable to change the VM from BIOS:

I440FX
to
Q35

Using Virt Manager, did you do anything special on the host KVM or to qemu to enable EFI Q35 ? or you were able to select it from the start ?

thanks.

Q35 has to be selected as you are creating the vm.

FATeknollogee

Turns out the Windows 10 vm's booted just fine, they were UEFI + i440FX (no Q35).

The Fedora 26 vm's (UEFI + Q35) would not boot & gave the error listed in my orig post.