Description of problem: Currently, we enable the ballooning device, although we don't use it. It only takes a PCI slot, and provides no value whatsoever. (-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 in the QEMU command line) Version-Release number of selected component (if applicable): Essex How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Even if the balloon device isn't used for ballooning memory, it can still be used to access guest OS memory statistics, which does provide value. I don't believe typical cloud deployment is going to be running into the PCI device slot limit for virtio disks, and even if it did, we would be better off using virtio-scsi to increase the max disk limit, rather than dropping virtio balloon which merely gains you 1 extra disk.