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Questions tagged [libvirt-guests]

11 questions
3
votes
1 answer

Delayed start for Guests KVM/libvirt

Looking for any pointers anyone may have to introduce a delayed start for KVM guests i.e. 30 seconds between starting each virtual server rather than starting them all at once which thrashes the disks and actually just ends up taking a lot longer to…
Backtogeek
  • 607
2
votes
1 answer

Where is virsh save directory location defined

The default location of the virsh save myVm goes into /var/lib/something which makes my slash partition full on a Vm save, which is really anoying. I could not figure out where is the virsh save myVm directory location defined! The default is into…
Philippe Gachoud
  • 1,907
1
vote
1 answer

Assign ethernet alias to KVM guest

I have a pool of IP addresses and a single ethernet cable. I have set aliases: auto enp2s0:0 iface enp2s0:0 inet static address x.x.x.x netmask x.x.x.x I want to dedicate some of the aliases to a libvirt kvm guest, so that the ip is set from…
Laurent
  • 476
1
vote
1 answer

kvm/libvirt Windows 11 guest cannot shutdown after logout

I have Windows 11 KVM(libvirt) guest. It can be shutdown by virsh shutdown if it is login, otherwise cannot. "Allow system to be shut down without having to log on" is enabled. That is actually the default. Anyone has clue? Update: If I start the…
John Siu
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1
vote
0 answers

Virtualized Centos 7 on Ubuntu host: very slow I/O

I run a Centos 7 virtualized in Ubuntu 20.04. There is a huge I/O performance drop in the VM compared to the host. The host has plenty of RAM. Host: * MB/s = 1,000,000 bytes/s * KB = 1000 bytes, KiB = 1024 bytes Sequential Read (Q= 32,T= 1) : …
Laurent
  • 476
1
vote
2 answers

KVM quests "stuttering"/"freezing" intermittently on Debian 10

I'm using KVM on Debian 10 as host and for now two guests that are Debian 10 as well. The guests are "stuttering" frequently, what I mean by that is that like at least several times an hour a guest becomes unresponsive for like 10 seconds. If I have…
LetMeSOThat4U
  • 1,603
1
vote
0 answers

Libvirt VM using twice it's memory

Running on Ubuntu server, a CentOS 7 VM is eating the memory : Host: # free -m total used free shared buff/cache available Mem: 80140 71676 5346 7 3117 7655 Swap: …
Laurent
  • 476
0
votes
0 answers

gcp suspending active libvirt guests

I am facing the issue where GCP is suspending all the active libvirt guests frequently. Below are the logs from syslog. google-clock-skew: INFO Synced system time with hardware clock. systemd[1]: Started Virtualization daemon. systemd[1]: Starting…
user550256
  • 1
0
votes
1 answer

How to route network traffic between KVM and VirtualBox?

Is there a simple way to route network traffic between two VMs, one in virtualbox and the other in KVM/libvirt? In the KVM World, I can see the virbr interfaces (Virtual Bridges?) and they have an IP assigned: virbr0:…
Aldo Bassanini
  • 101
0
votes
1 answer

Missing KVM snapshots in virt-manager

I need to resize an image and receive an error when using qemu-img the resize is not supported because snapshots exist. Sure enough, even though virt-manager does not show any snapshots, I see the following when listing the snapshots with…
rwfitzy
  • 233
0
votes
0 answers

Login screen frozen in virt-manager with VM Ubuntu Server 24.04.2 LTS

I installed a VM with Ubuntu Server 24.04.2 LTS on KVM. When I open virt-manager and I start the VM domain everything works but when I close virt-manager and I open it again I can't type, in the console, username and password (there is no cursor),…
Simone L
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