-hda vs virtio-blk: Match the Disk Bus to the Guest Image
An interesting problem I ran into recently: qcontroller had been loading Ubuntu 22.04-25.04 images just fine, and then all of a sudden it stopped working with the 26.04 images. The guest VM crashed with: [ 0.395796] /dev/root: Can't open blockdev [ 0.396053] VFS: Cannot open root device "PARTUUID=8b
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