<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hi,</div><div><br></div><div>When I'm trying to run qemu-kvm command on RHEL6(linux kernel 2.6.32) then I get following errors which I think related to tap devices in my setup. Any idea why is that?<br></div><div><br></div><div><br></div><div>bash$ LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none <span style="font-weight: bold;">/usr/libexec/qemu-kvm</span> -S -M rhel6.2.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name instance-00000027 -uuid a93aeed9-15f7-4ded-b6b3-34c8d2c101a8 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000027.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -kernel /home/sumitsen/openstack/nova/instances/instance-00000027/kernel -initrd
/home/sumitsen/openstack/nova/instances/instance-00000027/ramdisk -append root=/dev/vda console=ttyS0 -drive file=/home/sumitsen/openstack/nova/instances/instance-00000027/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -netdev tap,fd=26,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:15:84:3e,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/home/sumitsen/openstack/nova/instances/instance-00000027/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5<br><span style="font-weight: bold;">char device redirected to /dev/pts/1</span><br style="font-weight: bold;"><span style="font-weight: bold;">qemu-kvm: -netdev
tap,fd=26,id=hostnet0: TUNGETIFF ioctl() failed: Bad file descriptor</span><br style="font-weight: bold;"><span style="font-weight: bold;">TUNSETOFFLOAD ioctl() failed: Bad file descriptor</span><br style="font-weight: bold;"><span style="font-weight: bold;">qemu-kvm: -append root=/dev/vda: could not open disk image console=ttyS0: No such file or directory</span><br></div><div><br></div><div>[sumitsen@sorrygate-dr ~]$ rpm -qa qemu-kvm<br>qemu-kvm-0.12.1.2-2.209.el6.x86_64<br><br></div><div>Let me know if you need any other info.</div><div><br></div><div>Thanks,</div><div>Sumit</div></div></body></html>