At a certain point, I don't know when because we are talking about a home lab here.
I could attach the USB HDD same as a virtual HDD and I could put exclusions on it

More detailed:
At the moment I have this:
A VM with TrueNAS that has:

• sda 100Gb, the operating system
• sdb 2Tb, the first hdd to use in TrueNAS
• sdc 2Tb USB, clone of sdb 2Tb made in TrueNAS

I want to backup the TrueNAS system, which means only sda
I excluded sdb via [NOBAK] [NOSNAP]
But I can no longer exclude sdc via [NOBAK] [NOSNAP]

Is there a possibility to implement the same options as for disks, for VUSB to?
I mean the option to use [NOBAK] [NOSNAP].
Before the update, I saw the USB-HDD as a normal disk that I could attach to VM and use the [NOBAK] option to excluded it from the backup.
I have XCP-ng 8.3 is installed on the server.

This is what I was thinking

• [NOSNAP] to be like SDA and disk 3
• [NOBAK] to be with SDA and disk 2
• In both cases disk 4 is excluded

From my point of view, it should be with "OR" and if the condition is fulfilled to execute.
E.g :

• if I have "[NOSNAP] 'VM name' " not to execute snapshoot
• if I have "[NOBAK] 'Vm name' " not to execute backup
• if I have "[NOSNAP] [NOBAK] 'Vm name' " not to execute snapshot and backup
  But if you make a backup, remove only what is with [NOBAK]

It's not really necessary.
As I said, I have 3 x DC and I restored them in the test lab and they were ok.
All three were backed up at the same time with a single normal backup task.
Below is the task I was talking about.

@fatek
AD has a maximum period of difference between Domain Controller's and as far as I know it is 24h.
If you don't do this, the oldest one will be out of sync and useless.

I have something like this and I have no problems so far.
The only thing is to do them all on the same day.
I have a task that backs up all three VMs at once.
And the restoration is done the same way, all from the same day.

@AtaxyaNetwork
thank you

@olivierlambert
ok, thank you

@AtaxyaNetwork
off topic,
how can I activate the dark mode for XOCE?

We need to talk to the XCP-ng team and see if they can provide the module for the xen kernel.

Try to install lm-sensors and see what it detects.
It seems to me that the kernel it does not have drivers for IPMI BMC KCS.
My fans have 8000 - 8100 rpm

yum -y install lm_sensors
sensors -v
sensors-detect
sensors

Did it come fully equipped?
Did you install Lenovo signed HDD in it? Or you have compatibles HDD.
If you have compatibility, try to put a HDD with (original) Lenovo firmware.
I had the same problem with an Lenovo ThinkSystem SR630, I had installed a Lenovo non-firmware HDD, all of them. I bought one with Lenovo firmware, I installed and the problem disappeared.

@olivierlambert
Thank you, this solve the problem

I am on commit 17ed63fd58451737e6ca0f9899332b49861b2407 and I can't export VMs.
I get "unknown error".
I have on one server XCP-ng 8.3 and I can export VMs with XO-lite without problems.
I tried to export them with or without compression

@manilx I use the last one - Windows Server 2008 R2 (64 bit)
Steps are:

1. On XCP-ng 7.5 create a VM with template Windows Server 2008 R2 (64 bit), with out hdd
2. Copy the VM to XCP-ng 8.2
3. Import HDD to XCP-ng 8.2
4. Attach the imported HDD to VM
5. Start VM

If you get BSOD you need to insert xenbus driver.
You have them on https://ncloud.neandria.ro/index.php/s/89i8D6E3nDX99G7
I use Dism++ for insert them, just mount de disk to other windows
https://github.com/Chuyu-Team/Dism-Multi-language/releases

What I did.
I installed XCP-ng 7.5 from https://updates.xcp-ng.org/isos/7.5/ , on VirtualBox with the ability to enable Nested VT-x/Amd-V
Copy templates for windows 2008 in the current XCP-ng, be it 8.2+, as in the photo. The template is to recreate the existing VM and attach the existing HDD

Download the XenServer 7.2 image from http://downloadns.citrix.com.edgesuite.net/12636/XenServer-7.2.0-install-cd.iso

Open with 7zip or equivalent.
Extract XenServer-7.2.0-install-cd.iso\Packages\xenserver-pv-tools-7.11.0-1.noarch.rpm
From the above file extract xenserver-pv-tools-7.11.0-1.noarch.cpio\opt\xensource\packages\iso\guest-tools-7.11.0-1.iso. Here you have PV drivers for windows 2008

Mount and install the PV driver in the VM and everything is ok

Or already extracted on https://ncloud.neandria.ro/index.php/s/89i8D6E3nDX99G7

The template must be for windows 2008, otherwise the PV drivers will not install properly

And I confirm this, the problem has disappeared.
Thank you

Testing commit 1d912bddab506d85ff5abbf36ad23cb795715eaf, same problem
To be more clear
This setup works with last commit

This setup is not working, it never ends