Linux KVM vm´s don´t halt completely

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amil

Active Member
Dec 16, 2015
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Hello,

In Linux KVM virtual machines (and this happens with all Linux distros), when a shutdown is performed, on proxmox vm appears running and in VNC console the message "Halting".

So the virtual machines are ready for shutdown, but i have to force a "hard" stop to shutdown definetively the vm.

Thank you!
 
Hi,
Do you have acpi enabled on your VMs(acpid installed)?
Or an other alternative would be install Qemu-Guest-agent and enable it in the VM config.
 
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wolfgang said:
Hi,
Do you have acpi enabled on your VMs(acpid installed)?
Or an other alternative would be install Qemu-Guest-agent and enable it in the VM config.
Click to expand...
Hi wolfgang, thank you for your suggestions!

I´ve installed acpid on VMs and the same result, with command "halt".

But if i do a "shutdown -h now" the VMs power off correctly (having acpid installed or not).

The other option (qemu-guest-agent) you refer is the option "KVM Hardware Virtualization" in proxmox? Yes, it is active.

So, definetively is working a "shutdown -h now" in order to full shutdown VMS, but it will be useful to know why "halt" is not working as expected.


Regards!
 
amil said:
I´ve installed acpid on VMs and the same result, with command "halt".

But if i do a "shutdown -h now" the VMs power off correctly (having acpid installed or not).
Click to expand...
If I remember correctly, 'shutdown -h' calls 'poweroff' in the end and not 'halt'. The difference is, that halt stops the system and poweroff - well, powers it off.

HTH
 
Hi jens, thank you for your reply. Yes, you are right, it seems that halt alone don´t poweroff system, it should be with the -p param (halt -p).

By the way, in my Linux workstations i allways used to poweroff with the single "halt" command and really system halt & poweroff without -p needed, this is the main reason i did´n understand why in VMs the single "halt" not poweroff, i thought that was the equivalent to a shutdown -h :)
 
is this why when i shutdown my host it hangs if a guest is on? right now I have 2 guests with windows 10, im guessing I need to install qemu agent along with the virtio serial driver to have it power off and not hang, when I press the power button/or shutdown through webinterface
 
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