Dear All,
I am using RHEL 6.2 + KVM on a X86_64 server. I have been able to create Linux
guests using virt-install (using virto and/or pci passthrough) and am able to
manage the guests using virsh and/or virt-manager for doing some basic stuff.
Here is a sample guest (that I was able to create using virt-install and able
to
boot fine using either virsh or virt-manager) :
domain type='kvm' id='11'
nametestvm2/name
uuidd44e8618-e48c-531b-01c4-80fc2a026a25/uuid
memory4194304/memory
currentMemory4194304/currentMemory
vcpu1/vcpu
os
type arch='x86_64' machine='rhel6.2.0'hvm/type
boot dev='hd'/
/os
features
acpi/
apic/
pae/
/features
clock offset='utc'/
on_poweroffdestroy/on_poweroff
on_rebootrestart/on_reboot
on_crashrestart/on_crash
devices
emulator/usr/libexec/qemu-kvm/emulator
disk type='file' device='disk'
driver name='qemu' type='qcow2' cache='none'/
source file='/var/lib/libvirt/images/vmStorage/vm2.img'/
target dev='vda' bus='virtio'/
alias name='virtio-disk0'/
address type='pci' domain='0x' bus='0x00' slot='0x04'
function='0x0'/
/disk
disk type='block' device='cdrom'
driver name='qemu' type='raw'/
target dev='hdc' bus='ide'/
readonly/
alias name='ide0-1-0'/
address type='drive' controller='0' bus='1' unit='0'/
/disk
controller type='ide' index='0'
alias name='ide0'/
address type='pci' domain='0x' bus='0x00' slot='0x01'
function='0x1'/
/controller
interface type='bridge'
mac address='52:54:00:7b:dc:d3'/
source bridge='vbr1'/
target dev='vnet0'/
model type='virtio'/
alias name='net0'/
address type='pci' domain='0x' bus='0x00' slot='0x03'
function='0x0'/
/interface
serial type='pty'
source path='/dev/pts/4'/
target port='0'/
alias name='serial0'/
/serial
console type='pty' tty='/dev/pts/4'
source path='/dev/pts/4'/
target type='serial' port='0'/
alias name='serial0'/
/console
input type='tablet' bus='usb'
alias name='input0'/
/input
input type='mouse' bus='ps2'/
graphics type='vnc' port='5900' autoport='yes'/
video
model type='cirrus' vram='9216' heads='1'/
alias name='video0'/
address type='pci' domain='0x' bus='0x00' slot='0x02'
function='0x0'/
/video
memballoon model='virtio'
alias name='balloon0'/
address type='pci' domain='0x' bus='0x00' slot='0x05'
function='0x0'/
/memballoon
/devices
seclabel type='dynamic' model='selinux' relabel='yes'
labelsystem_u:system_r:svirt_t:s0:c290,c578/label
imagelabelsystem_u:object_r:svirt_image_t:s0:c290,c578/imagelabel
/seclabel
/domain
Tried to start the above guest using qemu-kvm directly (so that I can in future
specify different options etc). But I am getting some errors. (pl. see below).
# /usr/libexec/qemu-kvm -version
QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2), Copyright (c) 2003-2008
Fabrice Bellard
# /usr/libexec/qemu-kvm -S -M rhel6.2.0 -enable-kvm -m 4096 -smp
1,sockets=1,cores=1,threads=1 -name testvm2 -uuid d44e8618-e48c-531b-01c4-
80fc2a026a25 -nodefconfig -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/testvm2.monitor,server,nowait -
mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -
drive file=/var/lib/libvirt/images/vmStorage/vm2.img,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,bootindex=1 -
drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-
drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev
tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device virtio-net-
pci,netdev=hostnet0,id=net0,mac=52:54:00:7b:dc:d3,bus=pci.0,addr=0x3 -chardev
pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -
device usb-tablet,id=input0 -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-
pci,id=balloon0,bus=pci.0,addr=0x5
char device redirected to /dev/pts/5
qemu-system-x86_64: -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24:
TUNGETIFF
ioctl() failed: Bad file descriptor
TUNSETOFFLOAD ioctl() failed: Bad file descriptor
qemu-system-x86_64: -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24:
vhost-net
requested but could not be initialized
qemu-system-x86_64: -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24: Device
'tap' could not be initialized
Can someone please tell me what this means and any tips on how I can solve
this?
Do I have to do some other setup to make qemu-kvm happy w.r.t the -netdev
options?
Thank you in anticiaption!!
Vinod
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