Editing domains in virsh results in "Extra element os in interleave"

[rune.p...@gmail.com]

When I edit domains in virsh I get the message
```
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng
Extra element os in interleave
Element domain failed to validate content
```

This happens even if I only change the amount of vcpu from 2 to 1. So I haven't added any elements.

This is in Qubes 4.

[Dupéron Georges]

I don't know if editing in virsh is supported.

I use this to change settings from the command-line:

qvm-prefs myvm vcpus 1

Cheers,

Georges Dupéron

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[Rune Philosof]

søn. 10. feb. 2019 20.34 skrev Dupéron Georges <georges...@gmail.com>:

I don't know if editing in virsh is supported.

I use this to change settings from the command-line:

qvm-prefs myvm vcpus 1

Well, the problem is that I wanted to add network to the booting options.

I want to PXE boot the VM.

[Dupéron Georges]

Well, the problem is that I wanted to add network to the booting options.

I want to PXE boot the VM.

qvm-prefs the-vm kernelopts 'your kernel options here' 

You might need to also edit the QEMU command-line if you're using HVM, e.g. in case PXE is not activated in the BIOS. It is fairly difficult to do so, I used this hack to switch the disks from SCSI to IDE:

# From: https://github.com/QubesOS/qubes-issues/issues/4321#issuecomment-423011787
# and:  https://github.com/QubesOS/qubes-issues/issues/3494#issuecomment-427698388

sudo cp -i /usr/lib/xen/boot/stubdom-linux-rootfs /usr/lib/xen/boot/stubdom-linux-rootfs.bak-"$(date +%s)"

mkdir stubroot

cd stubroot

# unpack:

zcat /usr/lib/xen/boot/stubdom-linux-rootfs | cpio -i -d -H newc --no-absolute-filenames

nano init # make your changes here. The blunt way is to use sed to edit/append options in $dm_args just before the IFS=$'\x1b' which precedes the actual call to qemu.

# repack:

find . -print0 | cpio --null -ov --format=newc | gzip -9 | sudo tee /usr/lib/xen/boot/stubdom-linux-rootfs > /dev/null

Cheers,

Georges Dupéron