Freenas Virtio Drivers
Contents • • • • • • • • • Introduction In order to improve disk performance, special paravirtualized block drivers can be installed in Windows guests. You have to download and install those drivers in the VM, as Windows does not provides them by default. Note: Proxmox recommends using SCSI with VirtIO SCSI as SCSI Controller Type for VM disks, to have the most features and best performance. VirtIO block may get deprecated in the future.
Jul 28, 2013 Drommy. FreeNAS 8.3.1 also work with virtio as long as you do not use the virtio network (vtnet) device. Which is a pity as this is where I hope to see a performance increase. The drives have direct access to hardware as I use the Vt-d extension, therefore virtio for the data storage play no part. Paravirtualized Block Drivers for Windows. From Proxmox VE. Download the VirtIO drivers as described above, upload VFD (for disks) and the ISO (for.
Download You can download the latest stable Windows VirtIO drivers from: Older Windows Versions may sometimes need older VirtIO drivers. See for more info about the change log, guest OS compatibility and other useful VirtIO guest devices. Upload the ISO through the Proxmox VE WebUI: Select a Storage which allows ISO images in the PVE WebUI and switch to Content tab where you can use the 'upload' button on the menu bar. You may also copy the ISO manually onto a PVE configured storage. Installation The goal to use VirtIO SCSI or Block (SCSI is recommended) to improve the performance and available features of (Windows) VMs. The way we do this depends if we want to change an already installed and running Windows VM or if we want to set this up during a Windows installation. Setup On Running Windows Here we add a temporary disk with the new wanted disk controller to the VM and install the respective drivers.
The Windows OS in your VM knows nothing about VirtIO drivers, so you can't simply stop the VM, change the disk to Vrtio-SCSI or VirtIO and reboot. You have to force Windows to install VirtIO drivers during it runs. To do this we add a small temporary SCSI-VirtIO or VirtIO disk to the VM and install its drivers explicitly. Without adding the Disk the installation of the driver is flawed under Windows, as driver installation of an not plugged in Hardware does not works. Tested guest OS • Windows 2003 r2 32 bit guest • Windows 2000 server sp4 • Windows 7 and newer should work • Windows Server 2008 and newer should work Setup Steps • Prerequisite: An installed running Windows OS and the • insert the VirtIO ISO into the VMs CDROM Drive.
• add a small (1GB) SCSI (with Options -> SCSI Controller Typ: VirtIO) or VirtIO Block disk to the VM, you can use the PVE WebUI. • The disk should get hot plugged. If not, you need to reboot the VM. • Window should detect the new disk has a new unknown device and ask you for its drivers. If it doesn't, open the Device Manager, there should be an unknown device • Right-click this entry and select 'Update Driver Software' • Select No when the wizard asks you to search for the driver software (online) • Select 'Install from a list of specific location' • Use the Browse button and navigate to the driver CDROM • Normally selecting the CDROMs top directory (e.g. D:) is enough on newer Windows versions. • If that doesn't work select the appropriate folder for your guest version/architecture manually (use vioscsi for SCSI and vioblk for VirtIO) • Click Next to begin the install.You may get a warning about the driver not being signed on older Windows Versions, select “Continue Anyway”.
• Finish then driver installation You should now be able to enter Windows 'Disk Management' and format the temporary SCSI/VirtIO disk (this is not necessary, it just proves that the driver is installed and working). ( Legacy Note: Windows 2000 may report each disk 8 times in disk management, just install and use the first of each 8-tuple. In 'My computer' you should see each disk only once.) Windows has now the VirtIO SCSI/Block driver installed, and we need to re attach the VM disks as SCSI or virtio. • Shut down the VM and remove the temporary Disk (Remove it once to mark it unused and remove the unused to delete it entirely) • Detach all the disks you want to use as Virtio SCSI/Block, do this by 'Removing' the disk. This will not delete the disk but mark them as 'unused disks' • reattach them by double-clicking the unused disk entries (or use the Edit button) here select SCSI for VirtIO SCSI or VirtIO (SCSI virtio disks (do this by clicking the 'Edit' button for each of the 'unused' disks that were previously 'IDE' disks) • Important: Fix up the Boot Order under the VMs Option tab. Make sure that the primary boot device is still the old boot disk.
• Now you can start the VM again, it should use the new better disk controllers now. • If the VM does not boots you can detach and re attach the Disks as IDE, ensure that you do not missed a step here and eventually ask the Proxmox VE community for help. After finishing, through PVE web interface, you can: • remove the temporary VirtIO disk if you haven't already done this and don't need it anymore • remove the ISO mounted as CD device Setup During Windows Installation Download the VirtIO drivers as described above. Set the drive type to SCSI (preferred) or VirtIO and the Network also to VirtIO for improved performance. Add a second IDE CDROM drive, in the first mount the Windows installer ISO and in the second the VirtIO driver ISO. Startup the VM and the Installation process.
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