@dhiraj26683 We have production related infrastructure setup on these Hosts. Access to the services hosted gets a little slower than usual. For e.g among other services, one of the service is our deployent server, which we use to deploy softwares from a repository hosted on that server itself. We could see the delays in operations, even if the deployment servers utilization is not that high. If we move the server to another hosts, whose utilization is low, the service works well.
We need to restart the XCP host and everything works well like before. So at the end, we have only one solution to restart the impacted XCP hosts, when this memory utilization reach it's limit and alerts being started about it.

@olivierlambert

Hello,

Because we want to install Linstor on three hosts for HA, can I set those VM doesn't failover?

Thanks

@stormi Thanks, Stormi.. Looming forward to beta or when it becomes more publicly available.

Long story short, I have a Win11 VM that I have stuck on a dieing server and cant migrate it off anywhere with the vTPM enabled.. LOL

You are welcome! Enjoy XCP-ng and Xen Orchestra 🙂

Perfect! Enjoy 🙂

@tuxen Thank you! I will try it

Many thanks @gduperrey

I disable Dell repo.

@robyt It depends on (1) licensing, if any, as some licenses go by cores vs. sockets, and (2) NUMA/VNUMA depending on how critical the performance is depending on how the VCPUs get allocated between sockets or on a single socket. Best way IMO is to try all and test with benchmarks. See, for example, this article and the previous two articles, as well as articles by Frank Denneman and others: https://blogs.mycugc.org/2019/04/30/a-tale-of-two-servers-part-3-the-influence-of-numa-cpus-and-sockets-cores-persocket-plus-other-vm-settings-on-apps-and-gpu-performance/

@Toni said in XCP-ng host restarts at random intervals:

Please check whether something is connected via USB on the systems that have the reboot problem.

Hi! It's a community forum here 🙂 So it's a bit more up to you to demonstrate the bug by investigate a bit more and digging the logs, otherwise if you want an investigation on your setup, then pro support is more fit. If you want to take a look on what logs to check, take a look at https://docs.xcp-ng.org/troubleshooting/

@KPS And I’m also trying to install the oops utility cpupowerutils, but nothing works - Epel release is not installed. Is it worth installing? Will it help me?

@olivierlambert

Oh my, can't believe was that easy and I was fiddling around for hours with citrix links. In Brazil we would say "if this was a snake, you would be dead by now".

Thank you!

@Alexander-0 Thanks!

I'll compare this to my original notes (still from Xenserver 6 era, but used on 7 and 8 too)

GNS3 VM 2.2.43 on XCP-ng 8.2 seems to be working for me on HP G8 running 2 x Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz.

I havent really used GNS3 much so probably havent found what might be broken other than I cant load xen tools.

I just imported the OVA via XOA and pointed the windows GNS3 at the IP address it picked up.

@olivierlambert You and the rest of the Vates team are already my Xen heros! I've been running XCP-ng 8.3 Beta on my home lab since August. I was impressed to see the new virtual TPM option in XO this weekend after pulling and compiling the latest source code. (BTW: Windows 11-23H2 BitLocker works flawlessly with the new vTPM support.) XCP-ng and XO truly just keep getting better and better! Hopefully, nested-virtualization of Windows Hyper-V on Xen will get solved before too long since a good variety of capable hypervisor options is important for a healthy and competitive virtualization ecosystem. This is especially true now as we all look to see what Broadcom will do as the new owner of VMware.

Ah interesting 🙂 Thanks for the feedback!

Just create a VM with a linux template (any linux, I use Rocky Linux 9) and mount (attach) the VHD in it, the VHD from the VM you want to backup.
Clonzilla will go very well.
Don't forget to choose KVM, otherwise you won't have video.
The problem is with windows templates, it doesn't matter which version.
After the backup finish, disconnect the VHD from the VM with linux template and start the VM with windows template

If you can't have a homogeneous cluster, then so be it, you'll have multiple pools and that's it 🙂 XO can manage them all anyway.

HA isn't possible across clusters, indeed.

For those coming here from Google who are still unsure of some of the details, including what the static lower bound is actually for, here is the corresponding documentation for XenServer: https://docs.xenserver.com/en-us/citrix-hypervisor/vms/vm-memory.html