Questions tagged [virtio]
19 questions
29
votes
4 answers
libvirt/9p/kvm mount in fstab fails to mount at boot time
I am trying to mount a shared folder using qemu-kvm/9p and it fails to work if I add it to the fstab file. I get an error at boot that the device cannot be mounted, yet after start if I run "mount -a" the device will be mounted.
fstab line:
src_mnt…
8
votes
2 answers
Qemu share folder - 9pnet_virtio: no channels available for device
I try to run a qemu virtual machine having a folder shared with host. No matter what I do, I have always the same error: 9pnet_virtio: no channels available for device share.
Host machine is under Linux.
Kernel was compiled with all 9P and virtio…
jks
- 81
6
votes
1 answer
QEMU: No visible cursor when using QXL or virtio
When I run qemu-system_x86_64 with -vga qxl/-device qxl-vga or -vga virtio/-device virtio-vga, the guest has no visible cursor. The mouse works, and items highlight when I hover over them, but I can't actually see the cursor. With standard VGA…
Benjy Wiener
- 189
5
votes
0 answers
Why is virtualbox networking using virtio slow (bridged and host-only, Debian)
I'm currently installing a VirtualBox Server using Debian for Host and Client. I experience some trouble regarding network performance and CPU load especially using host-only networks and I've no idea how to track this further down.
Neither the host…
Kai Giebeler
4
votes
2 answers
Installing VirtIO drivers in Windows Server 2008
We are running a Windows Server 2008 system as a "guest" on a Linux-KVM virtual server (SLES11, with VirtIO support). We have trouble with the system performance and this is possibly due to not using the VirtIO drivers. I don't have much experience…
SDwarfs
- 113
4
votes
1 answer
Can I get more screen resolution options for a QEMU virtualized Windows using a VirtIO graphics card?
When virtualizing e.g. a Windows 10 installation with QEMU and using the default graphics card (with no command line option set), it shows up as a "Microsoft Basic Display Adapter", and one can choose from a lot of resolutions:
1920 x 1200
1920 x…
Tobias Leupold
- 195
4
votes
1 answer
No Internet on Linux KVM Windows 10 guest using VirtIO drivers
I'm attempting to install a Windows 10 VM using QEMU/KVM in virt-manager. I want to use it for a WinApps setup to do some experiments with Adobe CC in Linux.
I've been following several guides including the Winapps guide on their Github page and…
4
votes
1 answer
How to enable virtio in Virtualbox?
My VM (Ubuntu 12.04) has 2 network interfaces attached which is recognized as eth0 and eth1.
Now I want to change the cards to virtio to improve the performance, so I open VM settings and change both adapters' types to Paravirtualized Network…
phuclv
- 30,396
- 15
- 136
- 260
2
votes
1 answer
How to change the disk interface type for my Windows 8.1 guest on KVM
I recently setup a Windows 8.1 VM with KVM and virt-manager. I initially set the disk interface to be IDE, but I'd like to change it to virtio. However, if I just change the interface in the configuration, I have to boot into Startup Repair, which…
zymhan
- 812
2
votes
0 answers
How to disable host LRO/CSUM on Host running Virtual Box
Running Oracle VirtualBox Version 5.2.18 on Windows 7.
Virtual Machine with Fedora 30.1.2 is created. Linux Kernel is 5.1.0.
Network Adapter configured in Virtual Box for this VM is Paravirtualised network (virtio-net).
When I try to load xdp eBPF…
JagsN
- 21
1
vote
0 answers
Poor I/O performance with qemu-kvm and native block device (dedicated disk)
I'm running a VM on RHEL9 (qemu-kvm 9.0.0, release 10.el9_5), and I'm observing quite poor I/O performance (about a quarter of native performance). Here are some metrics, collected with fio:
$ fio --name TEST --eta-newline=5s…
Jonny
- 11
1
vote
0 answers
Qemu-setup not working on linux VM (ESXi hypervisor), potential virtio-issue?
I want to virtualize aarch (armv8) and armhf (armv7) with qemu and use Cortex-A7 as CPU. I'm an IT Engineer having not much experience with qemu, so I started to look for the best approach and after finding out that most ARM/RPI-Tutorials are…
SvenK
- 11
1
vote
0 answers
Destination Host Unreachable While Ping between 2 VMs
I'm trying to create a configuration of 2 VMs located on the same hypervisor, to each VM I attached virtIO interface from the hypervisor by editing the XML file of each VM.
I created the VMs and I got these interfaces after the attachment:
ens7:…
Eran Yermiyahu
- 11
- 1
1
vote
1 answer
Communication with Windows Guest OS run in Qemu
Using a headless Ubuntu 14.04 server, I'm running a Windows 7 guest in Qemu to which I am passing through the GPU (for performance). I am writing an application for which part will be running in Linux, and part will be running in the Windows guest,…
bkane521
- 111
0
votes
1 answer
vhost_net and virtio on KVM
I have read that “vhost_net” offers better performance against “virtio” based on…
user2066671
- 665