Hmm is it a big gap? I would have expect more 🤔

Anyway, @fohdeesha will give us some leads 🙂

@xcp-ng-justgreat
What is going on with this?

Bad idea. Losing network temporarily doesn't mean your app crashed.

I think first you really need to think about what you need.

Hi,

Can you be more specific? It's not clear to me 🤔

@olivierlambert Thank for for the link.. I obviously still a lot more reading to do:)

Everything is on the public mailing list, I suggest you ask there 🙂

Yes, as it's the recommended tool to manage your VMs 🙂

@greg_e I just stick it in the host because i had empty x8 pci slot and i need the GPU right now all those GPU are actually used up. 🙂

It works for my use which is very basic 2D autocad.

@indyj said in Xen VMs & elrepo kernel:

@danp said in Xen VMs & elrepo kernel:

@indyj May this is your issue? https://elrepo.org/bugs/view.php?id=1137&nbn=1

For those who install the kernel-ml from Elrepo: I tested this on all my CentOS 7/8 VMs: The results were mixed, the procedure worked on about half of them. Proceed with Caution.

Update:
This same issue has found its way into Fedora 34 in the stock kernel. No special repos, just "dnf update" and it happened. Could this affect the entire 5.14 series?

@heman

I had to use this when I didn't follow directions on my XCP-NG lab system.

Also a note to Freenas/Truenas users, make sure you "keep" a few old versions when you are upgrading things on your NAS, for exactly the same reasons. Yup, had to roll back on one of my production NAS this summer, nearly had a heart attack when stuff booted back up and none of the shares were accessible.

The only GPU I've tried to pass through has been an old Quadro 2000 card, and it seemed to work fine (though the old driver is a bit difficult on Win Server 2022). But the host also has a cheapo server GPU for XCP-NG to use for boot.

I mention Quadro because those didn't have the crippled firmware blocking them from pass through like the Geforce cards have/had. Kind of a dirty trick from nVidia!

Sorry I don't have any newer cards that I can test with, and I also only have Quadro cards here at all, "required" for some of our software.

What I did find out is that if you pass through a GPU, you can not migrate that VM to another host, even if that other host has the same model GPU installed. And with that my GPU pass though testing is complete.

@janvanhumbeek how long did you run Memtest for? Can you run it for the same length of time to see if it locks up. Check for BIOS updates. From the Logs you have C States errors so looks like Power management is not working you may need a different Kernel.

@thelearner What's the hardware your trying to work with, could you make a screenshot of the bios settings?

configure proper gpo for:

You need to answer the question: from where dc gets the time?

Try to boot in safe mode then.

Weird. Feel free to give more feedback if it happens again 👍

Confirming that @radioactiv's fix is all I needed too:

on my XCP-NG CLI did it.

You might get a free trial to play with it 🙂

@olivierlambert Thanks Master!

Regards from chile