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What we do know now is that the problem occurs when migrating a VM from a newer CPU to an older one. It doesn't matter if they are Intel or AMD

This seems to be the problem: https://lore.kernel.org/lkml/CAJ6HWG66HZ7raAa+YK0UOGLF+4O3JnzbZ+a-0j8GNixOhLk9dA@mail.gmail.com/T/

Still having the same problem with Proxmox 7.2-4 and kernel 5.15.35-2. root@pve221:~# pveversion -v proxmox-ve: 7.2-1 (running kernel: 5.15.35-2-pve) pve-manager: 7.2-4 (running version: 7.2-4/ca9d43cc) pve-kernel-5.15: 7.2-4 pve-kernel-helper: 7.2-4 pve-kernel-5.15.35-2-pve: 5.15.35-5...

We have the same problem with Intel in one cluster, and with AMD Ryzen 7 PRO 3700 in another

Please, tell me if downgrading to pve-kernel-5.15.30-2 solves the problem for you too. Thanks,

I've compared the Proxmox & KVM packages versions with another well working cluster and I've downgraded those packages: same error. I've downgraded then the kernel version, and after the reboot... it works ok! Kernel version pve-kernel-5.13.19-6-pve works ok, no problem migrating VMs. Then...

Hi, After upgrade to PVE 7.2-3 I cannot migrate VMs between nodes. The migration process is done ok, but the VM hangs once it is hosted in the target node. root@pve224:~# pveversion -v proxmox-ve: 7.2-1 (running kernel: 5.15.35-1-pve) pve-manager: 7.2-3 (running version: 7.2-3/c743d6c1)...

Hi Kmgish, What is the software of the screenshots? Thanks,

We updated and reboot all our nodes the same day you released version 6.3-6. It's a 5 Intel nodes cluster: 2x Dell R720 2x Dell R620 1x Dell T130 running CEPH 14.2.16 on datacenter class SSD drives. Everything was working fine during days, more days than it used to work with 6.3-3, but...

I suggest you to have 5 nodes. It's dangerous to have an even number of nodes. I think that what you want is very similar to one of our clusters, see screenshot below. We have separated ssd and hdd-sas pools, distributed in 2 datacenters (one PGs replica on each dc). In a third datacenter we...

The same here. PVE 6.3-4, Five Intel nodes cluster, in 3 different CPDs with 20G fibber links reboot at the same time. All 5 hosts rebooted with no reason or message at the same time. No backup processes involved.