Questions tagged [virtio]
The virtio tag has no usage guidance.
53
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TrueNAS Scale Installation on Proxmox Fails with "lsblk: CANT_FIND_vda3_OR_vdap3: not a block device" Error
I'm attempting to install TrueNAS Scale (24.04.0) in Proxmox (8.2.2), but the installation fails with the error message lsblk: CANT_FIND_vda3_OR_vdap3: not a block device.
Below is the table of the ...
- 347
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397
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Grub showing "attempt to read or write outside of disk 'hd0'" error when running in a proxmox VM
After installing a Debian 11 in a proxmox VM (with packer), grub would fail to boot into the newly created VM showing the error attempt to read or write outside of disk 'hd0'.
When installing a VM ...
- 140
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174
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Create a Group RW-access for a KVM shared folder via virtiofs on Ubuntu Server 22
I have a folder /common on an Ubuntu Server 22 host which is RW accessible by all users in group users i.e. user alice (with uid 1000) is a member of users (with gid 12345) and has fuull RW access to /...
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slow performance on ssd when using kvm to launch vm's
On my host hardware I have 1G's speed
on my vm I create using kvm it drops to around 20MB's
My host is running ubuntu 22.04 LTS
How can I optimise this?
I am using file based VM's. I created disk ...
- 341
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991
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libvirt/KVM 10Gb-capable network interface without virtio
Is there a way to set up a 10Gb-capable virtual ethernet port in a guest VM (RHEL) without using virtio ?
I have to put some kind of RHEL7 in a guest VM but the kernel used in there has UDP ...
1
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355
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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&...
- 111
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689
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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 ...
- 11
1
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1
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2k
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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 ...
- 234
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Windows VM suddenly run very slow in KVM/QEMU
I have several times experience a Windows VM suddenly start to run extremely slow, seems mostly related to slow storage IO. Seen this in different versions, but in this particular case is Win10 LTSC ...
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How to get Linux kernel to rescan virtio disks?
I have a virtio disk mounted to a KVM guest, backed by an LVM logical volume. I increased the size of the logical volume with lvresize on the KVM host machine.
Then I had to issue virsh pool-refresh ...
- 183
3
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1k
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Updated VirtIO SCSI driver on my Windows 2012 R2, and now only boots into recovery. How to recover?
I have a Hetzner W2012 R2 Cloud VM, and I updated the VirtIO vioscsi driver on it. Now it only boots into recovery mode and I cannot access the C-drive even from command prompt.
Is there any way to ...
- 163
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454
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VirtIO ethernet adapter limited performance
I have a Windows 10 KVM VM on Ubuntu 20.04. The host has dual 10 GbE adapters configured as LACP bond and there's a bridge interface for the VM and it's on the same LAN as the host.
Windows has VirtIO ...
- 1
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217
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Partition of mdadm raid0 array passed through to win10 20H2 via virto driver is suddenly lost. How can I figure out why?
I have checked the logs. System has been working for a month then suddenly they could not see the drive on network. It is a linux file server with a virtual windows on top of it ... Virtual windows ...
- 636
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124
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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 ...
- 11
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138
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Qemu Libvirt : unabled to pass all GPUs to vms
Im trying to pass all gpus to different systems , my setup:
asus x399 gaming 6 mainboard
amd 1950x
32G ram
1 TB intel ssd m.2
gtx970
gtx750
this resources should be passed into 3 systems:
vm1 a ...
- 103