All Questions
Tagged with virtualization or virtual-machine
1,733 questions
-1
votes
1
answer
46
views
Show vsock for ssh
Fedora server said
But when I try it from host
ssh vsock%1
ssh: Could not resolve hostname vsock%1: Name or service not known
Question: how to see the vsocks?
- 14.5k
1
vote
0
answers
29
views
How to step over an "int 3" on x86_64 with KVM?
On the x86 platform, the int 3 instruction causes a breakpoint trap. For KVM, the Virtual CPUs can be configured to exit to the hypervisor on this trap, by enabling the flags KVM_GUESTDBG_ENABLE and ...
- 11
0
votes
1
answer
98
views
How to secure host system from untrusted libvirt-managed virtual machines, and them from each other?
I have Fedora Workstation 42 on a laptop, with untrusted libvirt-managed virtual machines.
I would like to secure the host from the virtual machines, and ensure they are unable to interact with each ...
0
votes
1
answer
37
views
How can I configure VirtualBox network settings so multiple Linux VMs can communicate locally?
I am setting up several Linux virtual machines in VirtualBox to practice for the RHCSA exam. I want them to communicate with each other for testing networking commands such as ping, ssh, and file ...
3
votes
1
answer
216
views
How to fix a libvirt network setup error
I am creating a new QEMU/KVM virtual machine using libvirt CLI in Debian Linux.
According the tutorial, I must activate the default network using the following command:
sudo virsh net-start default
...
- 93
0
votes
0
answers
24
views
How to solve the prompt "internal error" when running a virtual machine on VMware Fusion on MacBook Pro?
error info:
Several virtual machines are installed in VMware Fusion, including Windows 10, CentOS, Ubuntu, etc., and all of them report this error when running.
Configuration details are as follows:
...
1
vote
1
answer
68
views
Preallocate large continuous memory block for legacy executable
I'm trying to develop J2ME game on Linux using this guide by microgram dev.
The j2me emulator from Oracle Wireless Toolkit works totally fine after Linux reboot.
I run some other apps like browser, ...
- 111
1
vote
1
answer
55
views
Space Issue on Elementary OS
I set up Elementary OS on a virtualbox VM for testing. When I did so I only selected 20 gb drive size. It didn't take long to fill that up because for some reason the LVM was set for ~16 gb. I resized ...
- 13
0
votes
0
answers
147
views
Enable DRI3 extension on Ubuntu VM with TigerVNC
I have downloaded the source code and built Chromium on an Ubuntu 24.04 VM (from https://chromium.googlesource.com/chromium/tools/depot_tools.git by following the instructions on https://chromium....
1
vote
1
answer
151
views
cloud-init tailscale setup fails due to missing /dev/net/tun
I want to provision a VM in proxmox with cloud-init, such that tailscale will be set up and running on first boot.
The image I use is alpine 3.22.1 (nocloud_alpine-3.22.1-x86_64-uefi-cloudinit-r0....
- 23
0
votes
0
answers
63
views
Why do NFS-backed files remain visible in a VM after host umount when shared via virtiofs?
I am curious about the behavior of Virtual Machine.
Environment
There are two computers.
192.168.180.10: NFS Server
Rocky Linux 9.6
192.168.160.30: VDSM Host (NFS Client)
Rocky Linux 9.6
VDSM ...
- 101
0
votes
0
answers
43
views
Is a raw file created by qemu-img the same as a -flat.vmdk file in VirtualBox?
I'm trying to serve an image using PXE and I just want to make sure that if I convert a .qcow2 file into a raw file, that's the same as creating a fixed-size -flat.vmdk file in VirtualBox, because ...
- 101
2
votes
1
answer
127
views
Is it possible to recover deleted files from a qcow2 disk in Proxmox using extundelete or ext4magic?
I’m running a Proxmox VM with a qcow2 disk (Ubuntu guest, ext4 filesystem). I tried to recover a recently deleted file using extundelete and ext4magic, but both tools failed to find the file, even ...
3
votes
1
answer
440
views
What's the difference between "QEMU/KVM" and "QEMU/KVM user session" in Virtual Machine Manager?
I just installed "Virtual Machine Manager" from Discover (flatpak) and I'm trying to learn how it works.
When I'm adding a connection, then it gives me two options: "QEMU/KVM" and &...
2
votes
3
answers
1k
views
Virtual Machine Manager: Unable to connect to libvirt qemu:///system. Verify that an appropriate libvirt daemon is running
I just found an app on Discover Store (Flatpak) that is called "Virtual Machine Manager". So I've downloaded it, because I want to try and make a Windows 11 VM with it.
But as soon as I go ...