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Questions tagged [virtio]

51 questions
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Can I have virtio-win package on CentOS?

In "Red Hat Enterprise Linux 6. Virtualization Host Configuration and Guest Installation Guide" in chapter 10.1 "Installing the KVM Windows para-virtualized drivers" it says: The virtio-win package contains the para-virtualized block and network…
Nickolai Leschov
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FreeBSD, VirtIO, and Virtualbox

I have no experience with VirtIO drivers, and am trying to figure out if it's possible to use them on this server. The server is a FreeBSD 8.2-RELEASE host and ZFS file system, with a Virtual Box-based Windows Server 2003 guest that's used as a…
Raolin
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Unidentified network with VIRTIO NIC Drivers after system reboot

I have KVM with VIRTIO network interface. It runs under Windows Server 2012 R2 so I installed RedHat network virtio drivers. It runs properly but after system reboot internet connection is lost. Network card has yellow sign and it described as…
tamadan
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Why is posix.lstat taking such a long time? (duplicity backing up of 9p virtio filesystem)

I have a filesystem mounted with 9p virtio through KVM, and am backing it up using duplicity to a remote SSH server. I' m trying to speed up the backup process, which seems unreasonably slow to me. The source size is 20GB in 107.651 files, which are…
jjakob
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Weird performace with VirtIO adapter in Linux Guest

I have been battling an extremely odd behavior with the VirtIO adapter for Linux KVM guests. First, my set up: KVM host is a CentOS 6.8 box. Guests are running CentOS 7. The adapters were originally connected to a host bridge although I changed the…
KernelFault
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kvm virtualized Windows get low disk performances

Disclaimer This is indeed a continuation of this thread. I've opened a new question as the target has slowly shifted, therefore I think was good to open a new post. I will merge back if required. Setup HP DL160g9 server with B140i soft-raid…
matteo nunziati
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How to make data up to date on a shareable disk connected to KVM guest?

I have 2 KVM guests running. One guest (let's call it the writing guest) writes to a virtio hdd (it's a lvm logical volume) periodically. Another guest (reading guest) reads from this disk (it's mounted to the reading guest in read-only mode) to do…
conqueror
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Windows Server 2012 R2 doesn't find virtio drivers when installing on KVM

I'm trying to install Windows Server 2012 R2 on a Debian KVM host, but it does not seem to find the drivers. The guest has two drives attached: an install disk and the latest Windows virtio drivers ISO (from here). I succesfully installed other…
Display name
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Installing VirtIO drivers on Win7

Context: I am attempting to convince a 64bit Win7 VirtualBox image to run under OpenStack, and Windows isn't my usual platform. Installing the Virtio drivers hasn't been going well. Thus far, what has gotten closest to working is running pnputil -a…
jal
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Ubuntu 14.04 KVM Host - Only network device pcnet working

I've installed a KVM host on Ubuntu 14.04. I've added a networking bridge as br0 and also added the p4p1 network adapter to it. My problem is now that only the "pcnet" networking guest driver is working well. All the others "e1000", "ne2k_pci",…
Alexander Birkner
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Scanning for new disks attached using virtio?

I can successfully attach disks to a running KVM instance using virsh attach-disk... virsh attach-disk node-1 /dev/vg_lunsr/lun1 vdb Disk attached successfully ...but these new devices aren't seen by the guest without a reboot, which almost…
larsks
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Does trim need to be enabled inside a VM on a zvol?

zfs and virtio both have trim support, which means, that trim operations can be forwarded by VMs using zvols to the physical underlaying disks. (Please excuse my usage of the word "physical zpool". I use it to distinguish the zpool on the physical…
John Smith
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kvm / proxmox 5 - virtio_net slow network 5Mbit, sometimes 900Mbit in opposite or both direction

Environment: several PROXMOX 5 (KVM) servers (kernel: 4.15.18-30-pve) VMs running Debian 9, 10 and 11 (vitrio /qemu-guest-agent current version of the respective Debian version) network cards connected via virtio_net kernel module VMs connected via…
farax
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KVM with VirtioFS on host, Windows Server guest, VirtioFS access denied

I have some successful setups of Linux guests under KVM with VirtioFS, even able to boot from theese folders without any "classical" drive images or dedicated partitions. Now, I have a need run a Windows Server guest, and share files from it with…
Evengard
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number of read and write processes affect the io performance of different virtio-scsi luns

QEMU emulator version 2.9.0(qemu-kvm-ev-2.9.0-16.el7_4.11.1) Linux 3.10.0-693.el7.x86_64 There are two luns attached via virtio-scsi (vcpu=1,virtio-scsi controller queue set to 1) Firt: dd /dev/sde device only , the iops was…
user3323381
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