Yes, system profile seems the most obvious thing to me. Double check it's on "Performance" on both hosts.

Buggy ACPI tables is sadly more common on non-enterprise grade hardware Might be related or not, but thanks for the feedback about frequency

@olivierlambert Ok, thanks. I will create another topic for the display issue.

Ah, probably won't work then, I'll try NFS async, thanks!

Shutdown the host properly and report if those VM boots. Try to disable/enable power on via Xen Orchestra, there's an issue in XCP-ng Center with this setting.

RTFM https://xcp-ng.org/docs/compute.html#pci-passthrough You can also passtrough multiple devices. If you wanted to passtrough another device at 00:19.0 just append it to the parameter. [root@xen ~]# xe vm-param-set other-config:pci=0/0000:04:01.0,0/0000:00:19.0 uuid=<vm uuid>

@xTITUS-MAXIMUSx Thanks for the tip. I went to the bios and enabled the Intel Virtualization Technology and I thought I was done. After further research I recognized there are two steps to Enable the Intel Virtualization Technology. https://us.informatiweb.net/tutorials/it/bios/enable-iommu-or-vt-d-in-your-bios.html Advanced >> CPU configuration >> Intel Virtualization Technology >> Enable Advanced >> System Agent Configuration >> VT-d >> Enable

It seems I got a kernel panic for some other reason with 5.4.21. It's all working now, thanks.

Please take time to read carefully the previous link I send. If you can't spot it, re-read it slowly, you might see this link: https://xenbits.xen.org/docs/unstable/support-matrix.html

It should work, yes.

Hi @mauricio_hps This is a XCP-ng forum, please try with XCP-ng https://xcp-ng.org

@talbaror by the way you can find discussion about all this, and what users have tried, etc., at: https://xcp-ng.org/forum/topic/2496/xcp-ng-nfs-timeout-values-and-storage-node-active-standby-failover https://github.com/xcp-ng/xcp/issues/334 stormi created this issue in xcp-ng/xcp open Use NFS hard mount instead of soft mount to avoid RO VMs (or offer option)? #334

5% sounds too much for me, but I'll check it in some populated pools (with host's cpu below 80%) to have a better idea.

@Otis2772 Where is your time synchronization coming from? Time differences can be caused by a slew of things including power settings (VM or not), CPU availability, networking connectivity, etc. Are they all the same OS or different OSes?

64 hosts tops. But in general, people tends to use around 16 to 20 hosts max in a pool. Don't forget about support

Check dmesg in the VM

I am back to the office and I am troubleshooting different settings and connection setups. I appreciate all your input. The issue is configuring the right NIC0/NIC1/WAN/ and LAN. Once I am done I post my setting. Thanks again for everyone.

Wow, didn't know it was possible to violate those rules!

Yep.. that did it... started it on the older host, and can now migrate it backwards and forwards with on issues... Thanks Olive... as always. Peter.