@poddingue Thank you kindly! Honestly, whatever organizational structure you think is best is fine by me.

Thank you all (@olivierlambert , @teddyastie ) for your valuable responses

@tjkreidl I found that some Intel PRO GPU card have SRV-IO without any additional license, but this functionality is supported in Linux kernel 6.12 and up. I hope in new XCP-NG will have 6.12+ and support GPU sharing.

@taghjichte From my testing you would need to passthought a device for audio. If need for professional audio work then yes a pci passthough would be the perferred option. With that said. @dinhngtu As for sound I have never looked much into it but the only vm I heard make sound is from Fedora even while booted from install iso. Kubuntu or windows with xen drivers installed no audio. (find for me at the moment) While audio seems to work in Fedora from iso it seems to be limited to left channel. Local system is connected to 5.1 sound.

Nice!! Thanks for the feedback @mattrc , it's really cool to see that you can fully enjoy your machine

From what I understand, the OS-to-iDRAC pass-through is a direct USB link between the host and the BMC, designed for the hypervisor host itself to talk to the iDRAC, not something that would naturally bridge through Xen's networking layer into a VM. That might be why the PIF shows up in XCP-ng but the VM still can't reach 169.254.0.1; the bare metal case works because the OS sits directly on the hardware with no virtualisation layer in between. If you need the VM to have direct BMC access, USB passthrough might be worth exploring; XCP-ng does support passing USB devices through to VMs (https://docs.xcp-ng.org/compute#usb-passthrough), though I'm not certain the iDRAC virtual USB NIC would show up as a passthrough-able device. Might be worth a mention to @Team-Hypervisor-Kernel to find out; others here will know more than me.

Hello @codemercenary In theory Xen is NUMA aware (See https://wiki.xenproject.org/wiki/Xen_on_NUMA_Machines) so you would leave memory interleaving option of the BIOS off so that Xen does what it thinks is necessary. But these kinds of settings are very very workload sensitive and in fact it's usually a good idea to just test what works best for you. Regards, Yann

@gleveque Hello Can you retry with an up-to-date XCP-ng 8.3 host? PCI expansion ROM are now enabled when doing pass-through. The guest VM can now access the ROM bar. Regards, Yann

I've seen this happen after a BIOS update or if a CMOS battery starts failing. Sometimes the motherboard resets to 'Legacy' instead of 'UEFI' (or vice versa), and GRUB just loses its mind because it can't find the partition it expects. It’s worth a quick check in your firmware settings to make sure the boot mode and the drive order haven't shifted on you.

@TeddyAstie I hadn't seen anything special was needed in a VM other that a kernel new enough for support which 6.17 has, is there more to the story with adding things to Ubuntu?

@samuelolavo Thanks for your answer It's very weird because by seeing the command outputs that you pasted, it looks like everything is behaving as it should be. Even the PCI ID (segment:bus:device:function) seems to stay correct (0000:03:00.0) I'll ask others internally.

Hi, does anyone have any tips regarding getting the serial port to show up in xcp-ng? I imagine this normally should just work.. I am not sure why it doesnt show up in xcp-ng, while it shows enabled in the bios?

@comdirect Use this command: (replace sda in the command below with the relevant device) cat /sys/block/sda/queue/scheduler The active scheduler will be enclosed in brackets. e.g. noop deadline [cfq] For multiple drives use: grep "" /sys/block/*/queue/scheduler

@stormi Thank you so much. Only now getting around to setting up another set of R660s, will let you know how this works. Edit: worked beautifully on a new set of R660s. Using the old 20250606 ISO, the BCM57414 were not detected. The new ISO works as expected (BIOS install, did not attempt UEFI) and the NICs are all enumerated properly.

@AtaxyaNetwork Hi yes, Sorry I'm not super experienced in this area at all. I'm SSHd into the host and just ran dmesg -T in the root. [image: 0583e493-4d70-40b7-afc0-a88b0d9fd1a4-image.png]

@acebmxer There are older versions of the guest tools still available on Github.

Good afternoon, I have resolved the problem. Domo was trying to use the network Controller. Fixed it by using, /opt/xensource/libexec/xen-cmdline --set-dom0 "xen-pciback.hide=(0000:44:00.0)(0000:44:00.1)(0000:45:00.0)(0000:45:00.1)" reboot xl pci-assignable-list Xen Orchestra now allows PCI Networking Card to Pass-Through the VM. Regards

@DustinB said in Recommended DELL Hardware ?: Doesn't using non-shared storage ultimately cause the VM to be started on the other host? No. Live migration can occur between hosts even if: the VDI are located on non-shared storage the hosts are in completely different pools For the cross pool migration to succeed, both pools need to support a common instruction set. Otherwise, use the Warm Migration feature that does reboot the VM so that it is running the correct instruction set on the destination host.

@whyberg Nope... that feature is part of the CPU. But is that the actual problem? Maybe... As that machine is too old to do any real work, it's a fine toy. There are better faster cheap test machines available.