io_uring

Hi, it would be nice to be able to set the Async IO option (aio=) for cloud-init drives in the GUI. We are running a shared storage on a SAN LUN with OCFS2 and we know this is an unsupported setup. Since kernel 6.5 we need the aio=threads parameter for virtual disks. For normal vHDDs this can...

Hello all, After upgrade ( pve-manager 8.1.11 > 8.2.2), there is a problem with mounting ISO files to a running VM, or it is impossible to start the VM if the ISO file is mounted. The files are on the ocfs2 filesystem. scsi0...

Observations On my servers, I work with NVME, ZFS, and Windows and Linux guest machines. Especially on old Linuxes (like Suse Linux Enterprise 12 SP4), I experienced 3 major problems: 1. After a VM backup, the IBM DB2 got corrupted. Nobody was using it at the moment. 2. During a backup from...

Hi everyone, I've been having a performance issue with virtio-scsi for some time after migrating from ESX last year, with the VM becoming unresponsive and sometimes causing other VMs using virtio-scsi to hang too. I previously only saw the issue with Windows VMs during Windows updates, usually...

Hey everyone, a common question in the forum and to us is which settings are best for storage performance. We took a comprehensive look at performance on PVE 7.2 (kernel=5.15.53-1-pve) with aio=native, aio=io_uring, and iothreads over several weeks of benchmarking on an AMD EPYC system with 100G...

There's a lot of talk and excitement around Linux kernel 6.0 release. It seems there is a high belief that io_uring has been improved to a degree that there will be a lot of performance improvements all over the place. What are the implications of this for Proxmox and what kind of integration...

We recently completed the upgrade to Proxmox 7. The issue exists on two different kernels pveversion: pve-manager/7.2-7/d0dd0e85 (running kernel: 5.15.39-1-pve) and pve-manager/7.2-7/d0dd0e85 (running kernel: 5.15.35-2-pve) Since the upgrade Io wait has increased dramatically during vzdump...

Hi I am running Proxmox 7.2 inside Virtualbox istalled in Ubuntu 22.04.ins Just updated a kernel to 5.15.39-2-pve and PVE started to throw the error kvm: -drive file=/proxmox-ve/template/iso/AlmaLinux-9.0-x86_64-dvd.iso,if=none,id=drive-ide2,media=cdrom,aio=io_uring: Could not read image for...