I managed to get libvirtd out of the loop. I'm starting the vm with: qemu-kvm -S -M fedora-13 -enable-kvm -m 2048 -smp 2,sockets=1,cores=2,threads=1 -name test -uuid 5ffc03bf-3562-1c90-9543-a64b2416a4a1 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/test.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=localtime -boot dc -drive file=/var/lib/libvirt/images/test-1.img,if=ide,boot=on,format=raw -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -device usb-tablet,id=input0 -vga std -drive file=/var/lib/libvirt/images/test-3.img,if=virtio,format=raw host os is a fully updated fedora13 system with kernel 2.6.33.6-147.2.4.fc13.x86_64. Guestos is windows 2003 SP2 x86 with miniport hotfix KB932755 applied. Didn't solve the problem either. Anyone out there where the virtio storage does work with windows? I'm a little out of ideas at the moment. Regards, Gerrit -----Original Message----- From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On Behalf Of Gerrit van der Kolk Sent: Monday, August 02, 2010 3:44 PM To: 'kvm@xxxxxxxxxxxxxxx' Subject: unable to load viostor driver in w2k3 x86 Hello, I've been trying to use kvm with viostor, but the driver fails to load(Code 10). I'm using version 4.3.0.17241 of the driver. Info pci @ the qemu console gives: (qemu) info pci info pci Bus 0, device 0, function 0: Host bridge: PCI device 8086:1237 id "" Bus 0, device 1, function 0: ISA bridge: PCI device 8086:7000 id "" Bus 0, device 1, function 1: IDE controller: PCI device 8086:7010 BAR4: I/O at 0xc000 [0xc00f]. id "" Bus 0, device 1, function 2: USB controller: PCI device 8086:7020 IRQ 11. BAR4: I/O at 0xc020 [0xc03f]. id "" Bus 0, device 1, function 3: Bridge: PCI device 8086:7113 IRQ 9. id "" Bus 0, device 2, function 0: VGA controller: PCI device 1234:1111 BAR0: 32 bit prefetchable memory at 0xf0000000 [0xf0ffffff]. id "" Bus 0, device 3, function 0: RAM controller: PCI device 1af4:1002 IRQ 11. BAR0: I/O at 0xc040 [0xc05f]. id "balloon0" Bus 0, device 4, function 0: SCSI controller: PCI device 1af4:1001 IRQ 10. BAR0: I/O at 0xffffffffffffffff [0x003e]. BAR1: 32 bit memory at 0xffffffffffffffff [0x00000ffe]. id "virtio-disk0" Bus 0, device 7, function 0: Ethernet controller: PCI device 1af4:1000 IRQ 5. BAR0: I/O at 0xc0c0 [0xc0df]. BAR1: 32 bit memory at 0xf1001000 [0xf1001fff]. BAR6: 32 bit memory at 0xffffffffffffffff [0x0000fffe]. id "net0" Windows detects the controller and finds the driver automatically. But after this there is the yellow exclamation mark with the code 10. I'm using libvirt with kvm. The configuration is: <domain type='kvm'> <name>base</name> <uuid>d6d143d6-387f-8252-f7b0-419a76d4c609</uuid> <memory>2097152</memory> <currentMemory>2097152</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='fedora-13'>hvm</type> <boot dev='cdrom'/> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <cpu match='exact'> <model>core2duo</model> <feature policy='force' name='x2apic'/> </cpu> <clock offset='localtime'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/libvirt/images/base.qcow2'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/home/gvdkolk/Downloads/NetKVM-and-viostor.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/test.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:78:dd:89'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </interface> <input type='tablet' bus='usb'> </input> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> <video> <model type='vga' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> </devices> <seclabel type='dynamic' model='selinux'/> </domain> Does anyone have any idea what is going on here? Regards, Gerrit van der Kolk The information contained in this communication is confidential, intended solely for the use of the individual or entity to whom it is addressed and may be legally privileged and protected by professional secrecy. Access to this message by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, or distribution of the message, or any action or omission taken by you in reliance on it is prohibited and may be unlawful. Please immediately contact the sender if you have received this message in error. This email does not constitute any commitment from Cordys Holding BV or any of its subsidiaries except when expressly agreed in a written agreement between the intended recipient and Cordys Holding BV or its subsidiaries. Cordys is neither liable for the proper and complete transmission of the information contained in this communication nor for any delay in its receipt. 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