Red Hat Bugzilla – Bug 903922
Disable or remove virtio-9p until it becomes supportable
Last modified: 2014-06-17 23:21:42 EDT
Description of problem: KVM QE compared the list of cmd line and devices difference between rhel6.4 and rhel7.0. Found some general virtio devices are added. From KVM QE POV, Plese disable or remove usb related devices that qemu-kvm does not support. Version-Release number of selected component (if applicable): Host Kernel #uname -r 3.7.0-0.30.el7.x86_64 qemu-kvm version qemu-kvm-1.3.0-3.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. 2. 3. Actual results: RHEL6.4 Virtio device #/usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio name "virtio-scsi-pci", bus PCI, alias "virtio-scsi" name "virtio-balloon-pci", bus PCI name "virtio-serial-pci", bus PCI, alias "virtio-serial" name "virtio-net-pci", bus PCI name "virtio-blk-pci", bus PCI, alias "virtio-blk" name "virtserialport", bus virtio-serial-bus name "virtconsole", bus virtio-serial-bus RHEL7.0 Virtio device(added virtio-rng-pci and virtio-9p-pci, will be supported on rhel7.0?) #/usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio name "virtio-blk-pci", bus PCI, alias "virtio-blk" name "virtio-9p-pci", bus PCI name "virtserialport", bus virtio-serial-bus name "virtconsole", bus virtio-serial-bus name "virtio-serial-pci", bus PCI, alias "virtio-serial" name "virtio-rng-pci", bus PCI name "virtio-net-pci", bus PCI, alias "virtio-net" name "virtio-scsi-pci", bus PCI name "virtio-balloon-pci", bus PCI, alias "virtio-balloon" Expected results: Disable or remove general virtio devices that qemu-kvm does not support Additional info:
virtio-rng-pci should definitely be in RHEL 7. It's a very useful device. virtio-9p-pci is also useful -- libguestfs *could* use it (although not by default), and I believe that Dan's libvirt sandbox stuff is based on it. However 9pfs hasn't exactly set the world on fire.
Fixed in qemu-kvm-1.4.0-3.el7.x86_64.rpm
Reproduced this issue using qemu-kvm-1.3.0-6.el7.x86_64, "virtio-9p-pci" is not removed. # /usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio name "virtio-blk-pci", bus PCI, alias "virtio-blk" name "virtio-9p-pci", bus PCI name "virtserialport", bus virtio-serial-bus name "virtconsole", bus virtio-serial-bus name "virtio-serial-pci", bus PCI, alias "virtio-serial" name "virtio-rng-pci", bus PCI name "virtio-net-pci", bus PCI, alias "virtio-net" name "virtio-scsi-pci", bus PCI name "virtio-balloon-pci", bus PCI, alias "virtio-balloon" Verified this issue using qemu-kvm-1.5.3-35.el7.x86_64, "virtio-9p-pci" is removed. # /usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio name "virtio-blk-device", bus virtio-bus name "virtio-blk-pci", bus PCI, alias "virtio-blk" name "virtio-scsi-device", bus virtio-bus name "virtio-scsi-pci", bus PCI name "virtio-net-device", bus virtio-bus name "virtio-net-pci", bus PCI, alias "virtio-net" name "virtconsole", bus virtio-serial-bus name "virtio-serial-device", bus virtio-bus name "virtio-serial-pci", bus PCI, alias "virtio-serial" name "virtserialport", bus virtio-serial-bus name "virtio-balloon-device", bus virtio-bus name "virtio-balloon-pci", bus PCI, alias "virtio-balloon" name "virtio-rng-device", bus virtio-bus name "virtio-rng-pci", bus PCI
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.