All Questions
20
questions
0
votes
0
answers
73
views
Enabling wayland display server in CentOS stream9 automotive sig emulated by QEMU
I am following customizing_build
I am trying to build the image with wayland display server. However I am not able to get the display.
Running the built image using qemu-aarch64.
Running using:
qemu-...
0
votes
2
answers
989
views
I'm trying to run a Debian 11 VM on my CentOS 7 Home Server, but get hit by this issue with virt-install
See below, the issue im having when trying to run virt-install on its own. Same issue when I try with all the config I plan to use:
/usr/lib/python2.7/site-packages/requests/__init__.py:104: ...
5
votes
1
answer
451
views
Why CentOS converts ATA bus to scsi bus?
I use libvirt + qemu to boot a VM with a disk with IDE bus
device in libvirt:
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='none' io='native'/>
<source ...
- 53
1
vote
1
answer
4k
views
qemu/KVM iptables port forwarding
After dozens of articles, blob, tutorials and even answered questions here on stackoverflow, I'm still stuck on my problem: how to setup port forwarding from host to guests VMs.
First: sorry for my ...
- 13
1
vote
0
answers
3k
views
Installing AIX 7.2 from two iso files, using QEMU under CentOS 8
I'm trying to install AIX 7.2 having it on two iso files, virtualizing with QEMU version 4.2.0. I've created a disk file using the following command:
qemu-img create -f qcow2 hdisk0.qcow2 20G
Then I ...
- 149
1
vote
2
answers
9k
views
KVM/QEMU hosts best-practice distro selection (and package)
If I want to run a modern production virtualizer I would expect to turn to RHEL/CentOS as RHEL is the main maintainer for most of the virtualizer "components".
But the newest stable version ...
- 699
1
vote
2
answers
5k
views
Why does `virsh console x` hang on "Escape character is ^]"? (qemu-kvm)
The company where i start working for 2 months ago have an old hypervisor running with a few virtual machines. I logged in into one of the machines (at that point i did not know it was a virtual one) ...
- 211
6
votes
1
answer
21k
views
QEMU and CentOS 8: Where is /usr/bin/qemu-system-x86_64 and the qemu-system-x86 package?
I am trying to create and run a virtual machine on a headless server running CentOS 8 (x86-64).
After installing the necessary tools like libvirt and kvm it seems qemu is missing its main executable, ...
- 8,924
2
votes
1
answer
7k
views
Why does my QEMU/KVM virtual machine not start after CentOS 7.7 update?
After an automatic update of CentOS to version 7.7 on Sep 17 2019 my QEMU/KVM virtual machines do not start when I reboot the hypervisor server.
Trying to start the VM by hand gives this error:
# ...
- 8,924
2
votes
1
answer
2k
views
High cpu steal on Core 0 of KVM
In one of my KVM setups I am seeing high CPU stealing for Core 0 of both the guests. I have gone through saveral web results related to cpu steal but no were core steal is explained.
If I take ...
- 6,910
7
votes
2
answers
6k
views
Why `nproc` show less than `nproc --all`?
Here is output from nproc vs nproc --all and other command found on internet.
I still cannot understand why. It is a QEMU\KVM VM with CentOS 6.5 running undre other CentOS 6.5.
Below are outputs ...
- 941
1
vote
1
answer
2k
views
How to change the storage pool size in Centos with Kvm-Qemu?
I have 1 Tb hard disk and Centos 7 and Kvm-Qemu have been installed.
Now I have created a vm of 4gb ram, 40 Gb disk space. The VM came up.
Now one more VM am trying to create with same 4gb ram and ...
- 11
0
votes
2
answers
4k
views
ACPI: power off vs shutdown
I'm running a virtual machine with CentOS 7 guest. ACPI daemon is started.
When I shutdown the hypervisor, then guest operating system powers off. I can see in guest's syslog that it was notified ...
- 7,394
3
votes
2
answers
2k
views
csum errors on btrfs containing virtual disk
I have a btrfs disk that suffered some damage from hardware failure and spits i/o errors when copying certain files. I ran btrfs scrub, and when it reported csum errors I offlined it and did a btrfs ...
- 153
3
votes
1
answer
3k
views
Resize qcow2 root parition
I'm trying to re-size the file system on a Centos 7 vm because I made the vm too small to even do a yum update. I already have done some configurations to the virtual machine and it would be pain to ...
- 1,071