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In my cluster with 3 pve 8, 6.2 kernel, vm 100% CPU spikes,vm packet loss and rare complete freeze, setting “mitigations=off” helped

Agreed. Its not an option for me either

In my case “mitigations=off” helped with freezes on PVE8 with 6.2 kernel

any progress on sorting this spam out?(

Wrong guest memory report by balloon with fresh PVE 8.x and fresh Windows 2019 as guest - Fresh PVE 8 - Fresh Windows Server 2019 as guest - No software but latest Virtio drivers (0.1.229) + balloon service + qemu Guest Agent

I made one of my nodes NFS server (10Gb, NFS exported from ZFS storage with SSD disks) I connected 12 hosts to that Node (NFS storage) with default NFS settings (v.4.2) nfs: DS-254-NFS-B export /tank254/datastore/slave/nfs64k/id254 path /mnt/pve/DS-254-NFS-B server...

Seems this feature is not often requested and quite tricky to implement and maintain

such feature request has been posted in bug tracker for almost 8 years with no progress https://bugzilla.proxmox.com/show_bug.cgi?id=804

You can follow this tutorial with some changes (journaling -> snapshot) with some help from posts on this forum (try search). We've managed to set it up. It works no really smoothly but works https://pve.proxmox.com/wiki/Ceph_RBD_Mirroring

Thanks for the reply. Yeap, I'm fully aware about the issue with IP setting changes (mainly in Windows) - faced it several times. The question is - is there any significant reason to do so and keep VM "up to date" ? For example: may be there are relations between latest Virtio drivers (for all...

Just wondering, is there any reason to increase VM machine version to the higest one after major PVE upgrade? In terms of VM stability/perfomance Thanks in advance,

same story in our ceph installation. v17

Just wondering whether changing allocator would have an impact on QEMU performance or not?

With respect to blog at ceph.io https://ceph.io/en/news/blog/2022/qemu-kvm-tuning/ Which memory allocator and libRBD are used in Proxmox? Are the suggested optimizations in article above suitable for PVE+CEPH optimization?

Same on my HP gen8. iLo crashing. Disable intel_iommu does not help

Paste the content of: /etc/apt/sources.list by the way... do u have anything in /etc/apt/sources.list.d/ ?

Have u checked Troubleshooting section of the migration tutorial: https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0#Troubleshooting ?

Totally agree. If PVE maintainers managed to reproduce the issue they at least should get some more details on it and could provide them to pve community. It's not the rare issue. Lots of PVE users are facing it and it has already become a nightmare for dozen of them

In one of out installation we use small enterprise class SSD (or NVME) in each server to store VMs swap. Each VM (Windows) uses common shared storage (NFS) for system and data disks and local store (ext4) for additional (swap) disk.

Thanks! I will try to setup mirroring one more time with respect to your notes