See details below /usr/share/virtio-win/*.vfd: VFD floppy images for using during install of Windows XP /usr/share/virtio-win/drivers: Copy of the extracted VFD driver contents /usr/share/guest-agent/*.msi: QEMU Guest Agent 32bit and 64bit MSI installers Para-virtualized drivers enhance the performance of fully virtualized guests. The KVM virtio drivers can be loaded during the Windows installation or installed after the guest is installed. On Fedora 9 or later, you can do this using mkinitrd: # mkinitrd --with virtio_pci --with virtio_blk -f /boot/initrd-$(uname -r).img $(uname -r) Note, this step is only needed in order to useful reference
TCP timestamps help the system to adapt to changing traffic levels and avoid congestion issues on busy networks. TCP timestamps and TCP window scaling can be enabled or disabled. However, it's slow because the hypervisor has to emulate actual physical devices such as RTL8139 network cards . This seems to be an historical oversight and should probably be fixed. http://www.linux-kvm.org/page/Virtio
For block devices storing root file systems or other block devices required for booting the guest, the drivers must be installed before the device is modified. Shipping pre-compiled sources is generally against Fedora policies. Double click the installation files to install the drivers. Set the Device type to IDE cdrom and click Forward to proceed.
Installing drivers with a virtualized floppy disk12.3. The exact number of devices available is difficult to calculate due to the number of available devices. If you want to update from virtio-win-stable to the latest bits, do: sudo yum --enablerepo=virtio-win-latest update virtio-win or with dnf: sudo dnf --enablerepo=virtio-win-latest upgrade virtio-win RPM contents /usr/share/virtio-win/*.iso: ISO CDROM containing Virtio Tutorial See https://fedoraproject.org/wiki/Windows_Virtio_Drivers http://www.linux-kvm.org/page/WindowsGuestDrivers http://www.linux-kvm.org/page/WindowsGuestDrivers/Download_Drivers Following info on those page you can find: a git repository: https://github.com/YanVugenfirer/kvm-guest-drivers-windows this is the source for the Windows drivers and is hosted in a repository on
Installing the KVM Windows virtio Drivers10.2. Virtio Network This repo is enabled by default. The virtio package supports block (storage) devices and network interface controllers. While being largely transparent to the guest OS (you simply need to install a driver), they relieve the virtualizer from emulating a real physical device (which is a complex operation, as
Let see if, and how, both Linux (CentOS 6 x86-64) and Windows (Win2012R2 x64) are affected from that paravirtualized goodness. 12345»EndLatest articles: KVM Windows virtual machines and ACPI unattended shudown: a this page Using KVM virtio drivers, the following Microsoft Windows versions are expected to run similarly to bare-metal-based systems. Virtio Windows 10 The virtio-win package installs a CD-ROM image, virtio-win.iso, in the /usr/share/virtio-win/ directory. How Virtio Works Installing Drivers during the Windows Installation10.4.
Additional network and disk tips are available, outlining the process for installing drivers. see here If using libvirt this can be found at /var/log/libvirt/qemu/$vmname.log Questions/Comments about the RPMs or yum|dnf repos should be sent to regular fedora virt locations: https://fedoraproject.org/wiki/Virtualization#Mailing_list_and_IRC Questions/Comments about the actual drivers are Download the drivers The virtio-win package contains the para-virtualized block and network drivers for all should work Windows guests. If your distribution does not provide binary drivers for Windows, you can use the package from the Fedora Project. Virtio Drivers Windows 2012 R2
Anyway, in this article I am not going to explain in detail how a paravirtualized driver works, but to measure the performance implication of using it. It is recommended to use the para-virtualized drivers for fully virtualized guests running I/O heavy tasks and applications. Using KVM virtio Drivers for New Devices Paravirtualized drivers enhance the performance of guests, decreasing guest I/O latency and increasing throughput to near bare-metal levels. http://techdego.com/virtio-drivers/kvm-drivers.php Install the network device driverStart the network device driver installation Double click RHEV-Network.msi or RHEV-Network64.msi.
Press Next to continue. Virtio Architecture Using KVM virtio Drivers for New DevicesNext Chapter 10. KVM Paravirtualized (virtio) Drivers10.1. The Fedora Project is maintained and driven by the community and sponsored by Red Hat.
Red Hat is not responsible for content. or its subsidiaries in the United States and other countries. FAQ What license are these drivers? Install Virtio Drivers Windows Finish Press Finish to complete the installation.
Note that virtio is different, but architecturally similar to, Xen paravirtualized device drivers (such as the ones that you can install in a Windows guest to make it go faster under Red Hat, Red Hat Enterprise Linux, the Shadowman logo, and JBoss are trademarks or registered trademarks of Red Hat, Inc. Each guest can use up to 32 PCI devices with each device having up to 8 functions. http://techdego.com/virtio-drivers/kvm-guest-drivers.php See the README in this repo for some more details about how the RPM and repo are built: https://github.com/crobinso/virtio-win-pkg-scripts What is the reasoning behind the RPM/ISO layout?
Being a targeted paravirtualization form requiring guest-specific drivers, it is obvious that VirtIO is restricted to areas where it matter most, so disk and network subsystems are prime candidates for those Once the CD-ROM with the drivers is attached and the guest has started, proceed with Procedure 12.2, “Windows installation”. Install the para-virtualized drivers It is recommended to install the drivers on the guest before attaching or modifying a device to use the para-virtualized drivers.