different platform have different internal , and so different edge case. We are here to help to bridge the gap.

@flakpyro All this complexity makes me question the advantages of having all hosts in the same pool.

@olivierlambert said in HCP-NG 8.3 freezes and / or reboot on HGR-SAP3 by Ovh: You can edit your first post, which contains the title thanks a lot I'll wait until next week to disable deduplication (never on Friday )

No problem, you are welcome!

If XO from sources, double check you are fully up to date in the first place. You maybe used an outdated V2V code that wasn't asking for the template, causing the issue you experience now.

Keep us posted!

I get ~510MiB on DL380 G10, 2.6ghz, 40gbe cx3, 8.3.

Ah great Maybe something to update on the doc. Pinging both @Team-Hypervisor-Kernel and @thomas-dkmt

@Pilow Double checked. There's no filter in place and no new VM.

@florent It seems the Type: delta display during Backup fell back to a full may just be a display issue as it does seem to run a full copy.

I've seen cases where the a hard reset is forced in case some devices can't DMA. Maybe it's related. If that's the case, something should show up in the IPMI, and the crash is usually instantaneous; otherwise, there is some delay (~5 seconds) between Xen/Dom0 crash and actual reboot.

Once again, thanks for all the work you’ve done. If it hadn’t been for last night’s AI hallucination, I wouldn’t have dug in so deeply — and I ended up learning a lot. All the best!

@Chemikant784 It's likely that both Microsoft and Xen tools are a combination of the fix, I doubt XCP-ng has anything to do with this issue. And I never had time to check the XCP-ng Guest tools for Windows to see if this happened, but I'm guessing no or not tested. All my hosts are now on XCP-ng 8.3 and I don't see any point in testing 8.2 since it is EOL. And that said, I'm no farther along in my Server 2025 testing, too many other things going on to think about it right now. If I have time I need to burn the vSphere portion of my lab down and install either Harvester HCI or Windows Server for Hyper-V. Broadcom is just (seemingly) going out of their way to prevent people like me (or us) from learning their products and using them in our labs to further that goal. I've explained this several times to VMUG Advantage managers, but they seem so tied up in clawing out some continuing relationships with Broadcom that they will not "rock the boat". I've said these things in Broadcom webcasts as well, always a run-around with no answers. Sorry for the rant. All that said, eagerly awaiting XCP-ng 9, unfortunately I think the Alpha or Beta may wait until XO 6 is finished (just a guess). The updated kernel brings with it some storage changes that I really want to test, NFS nconnect=XX being one of them to see if I can get a little better performance to/from the disks. ESXi default was nconnect=4 and the VMs were slightly faster to/from their disks (all thin provisioned). The 4k "block" size and smaller is what I want to improve in all this.

@olivierlambert not by me

Impossible to tell yet, more in few months.

It's not a trivial scenario indeed. Dom0 is a PV guest (in other words: a VM) on top of an hypervisor (Xen), on top of an hypervisor (HyperV). As you can see, more layers means more problems

Ping @pdonias

thanks for advice, i'll keep my minIOs running