qemu -device ? seems to run correctly in F16 for me, which was the closed bug that you said was reopened. Can you give me the logs from /var/log/libvirt/qemu/<machine>.log as well as the output of lsmod | grep kvm?

Looks like the file-system was failing but I did not know how to run qemu from the command line. Please close any secondary bugs that were re-opened.

[shamim@n660 ~]$ qemu -device ?
qemu: error while loading shared libraries: /usr/lib64/librbd.so.1: file too short

[root@n660 ~]# rpm --erase --justdb ceph --nodeps

[root@n660 ~]# yum install -y ceph

[shamim@n660 ~]$ qemu -device ?
name "testdev", bus ISA
name "qxl", bus PCI, desc "Spice QXL GPU (secondary)"
name "qxl-vga", bus PCI, desc "Spice QXL GPU (primary, vga compatible)"
name "isa-debugcon", bus ISA
name "ib700", bus ISA
name "sga", bus ISA, desc "Serial Graphics Adapter"
name "cirrus-vga", bus PCI, desc "Cirrus CLGD 54xx VGA"
name "hda-duplex", bus HDA, desc "HDA Audio Codec, duplex"
name "hda-output", bus HDA, desc "HDA Audio Codec, output-only"
name "intel-hda", bus PCI, desc "Intel HD Audio Controller"
name "AC97", bus PCI, desc "Intel 82801AA AC97 Audio"
name "ES1370", bus PCI, desc "ENSONIQ AudioPCI ES1370"
name "sb16", bus ISA, desc "Creative Sound Blaster 16"
name "vmware-svga", bus PCI
name "isa-vga", bus ISA
name "VGA", bus PCI
name "lsi53c895a", bus PCI, alias "lsi"
name "ich9-ahci", bus PCI, alias "ahci"
name "isa-ide", bus ISA
name "ide-drive", bus IDE, desc "virtual IDE disk or CD-ROM (legacy)"
name "ide-cd", bus IDE, desc "virtual IDE CD-ROM"
name "ide-hd", bus IDE, desc "virtual IDE disk"
name "ne2k_isa", bus ISA
name "rtl8139", bus PCI
name "e1000", bus PCI, desc "Intel Gigabit Ethernet"
name "pcnet", bus PCI
name "i82801", bus PCI, desc "Intel i82801 Ethernet"
name "i82562", bus PCI, desc "Intel i82562 Ethernet"
name "i82559er", bus PCI, desc "Intel i82559ER Ethernet"
name "i82559c", bus PCI, desc "Intel i82559C Ethernet"
name "i82559b", bus PCI, desc "Intel i82559B Ethernet"
name "i82559a", bus PCI, desc "Intel i82559A Ethernet"
name "i82558b", bus PCI, desc "Intel i82558B Ethernet"
name "i82558a", bus PCI, desc "Intel i82558A Ethernet"
name "i82557c", bus PCI, desc "Intel i82557C Ethernet"
name "i82557b", bus PCI, desc "Intel i82557B Ethernet"
name "i82557a", bus PCI, desc "Intel i82557A Ethernet"
name "i82551", bus PCI, desc "Intel i82551 Ethernet"
name "i82550", bus PCI, desc "Intel i82550 Ethernet"
name "ne2k_pci", bus PCI
name "i6300esb", bus PCI
name "usb-redir", bus USB
name "ccid-card-passthru", bus ccid-bus, desc "passthrough smartcard"
name "usb-ccid", bus USB, desc "CCID Rev 1.1 smartcard reader"
name "isa-applesmc", bus ISA
name "SUNW,fdtwo", bus System
name "sysbus-fdc", bus System
name "ich9-usb-ehci1", bus PCI
name "usb-ehci", bus PCI
name "sysbus-ohci", bus System, desc "OHCI USB Controller"
name "pci-ohci", bus PCI, desc "Apple USB Controller"
name "ich9-usb-uhci3", bus PCI
name "ich9-usb-uhci2", bus PCI
name "ich9-usb-uhci1", bus PCI
name "vt82c686b-usb-uhci", bus PCI
name "piix4-usb-uhci", bus PCI
name "piix3-usb-uhci", bus PCI
name "isa-parallel", bus ISA
name "isa-serial", bus ISA
name "xio3130-downstream", bus PCI, desc "TI X3130 Downstream Port of PCI Express Switch"
name "x3130-upstream", bus PCI, desc "TI X3130 Upstream Port of PCI Express Switch"
name "ioh3420", bus PCI, desc "Intel IOH device id 3420 PCIE Root Port"
name "virtio-balloon-pci", bus PCI, alias "virtio-balloon"
name "virtio-serial-pci", bus PCI, alias "virtio-serial"
name "virtio-net-pci", bus PCI, alias "virtio-net"
name "virtio-blk-pci", bus PCI, alias "virtio-blk"
name "virtconsole", bus virtio-serial-bus
name "virtserialport", bus virtio-serial-bus
name "usb-bt-dongle", bus USB
name "usb-net", bus USB
name "usb-braille", bus USB
name "usb-serial", bus USB
name "usb-wacom-tablet", bus USB, desc "QEMU PenPartner Tablet"
name "usb-storage", bus USB
name "usb-kbd", bus USB
name "usb-mouse", bus USB
name "usb-tablet", bus USB
name "usb-host", bus USB
name "usb-hub", bus USB
name "scsi-generic", bus SCSI, desc "pass through generic scsi device (/dev/sg*)"
name "scsi-disk", bus SCSI, desc "virtual SCSI disk or CD-ROM (legacy)"
name "scsi-cd", bus SCSI, desc "virtual SCSI CD-ROM"
name "scsi-hd", bus SCSI, desc "virtual SCSI disk"
name "smbus-eeprom", bus I2C
name "virtio-9p-pci", bus PCI