FYI, our approach with vectura is only temporary, we have other plans in few months to get rid of this potential cat & mouse game Broadcom could do by slightly change their protocol (without even talking about the potential legal risk with it).

@ovicz Hello, does the igpu passthrough work with an up-to-date Ubuntu 26.04.1 guest?

@fred974 Hello, Could you please provide the logs produced by XenClean after its execution? If your VM couldn't boot after XenClean, XenBootFix executed from a recovery environment should get your VM working again. Instructions are available here: https://docs.xcp-ng.org/troubleshooting/windows-pv-tools/#windows-fails-to-boot-hangs-inaccessible_boot_device

@poddingue Quick update: I disabled “Purge snapshot data when using CBT” in the XO replication job. I still see NBD+CBT displayed in the XO task manager during replication, but after letting the jobs run for a few cycles, last night’s Veeam backups completed without any CBT warnings or fallback to full. I’m going to add a couple more VMs and continue monitoring. We use Veeam as part of our overall backup strategy for regular VM backups, and switching away from it would be a fairly large project. Veeam doesn’t provide the XCP-ng replication we need, so we’re using XO specifically to maintain replicas at our other site which is why we are using both products.