Update January 27, 2023: The issue described below is limited to users of RAW partitions. But there is a workaround. See under “What to do?”
A recent update from QEMU 7.1 to QEMU 7.2 caused my Windows 10 VM to show 100% utilization of the C: drive. Performance of the Windows VM dropped to the bottom – the VM was pretty much unusable.
Users at the VFIO Reddit reported similar issues. However, as it turned out, it seems to affect only storage on LVM raw volumes. In other words, if you have your VM in a qcow file, all should be well.Continue reading “QEMU 7.2 and Raw Disks”