On 01/02/2018 12:57 PM, Mihamina RAKOTOMANDIMBY wrote:

Hello,

I face this problem and I am willing to provide a patch in order to have a more informative message. This, of course with our help. I am not quite certain.

First of all: What is the problem?

On a fresh Install (ArchLinux for me), if ever forget to install Qemu and launch "virt-install" with "--type kvm", I get the message:

"Host does not support any virtualization options"

According to me, this message should be improved: if Qemu is not found, this should be "Did not find Qemu, please install it".

As I searched, the message is generated by this piece of code:

https://github.com/virt-manager/virt-manager/blob/c92aade081687b19f5a60cddfe...

As I write now, I cant find the pice of code actually calling the "quemu" binary. I think I should add a try/catch block there and Raise the right Exception. Would someone help me a bit?

virt-manager is not calling any qemu binaries at all. It just relies on whatever capabilities libvirt presents. The reason for that is remote access - just imagine you'd be installing a domain on a remote machine and virt-manager (virt-install) would spawn your local qemu binary to find out its capabilities. That would be flawed, wouldn't it. I agree that the error message can be made better (just like 90% of other messages of ours), but first things first. What's the output of 'virsh capabilities' (if you're giving any connection URI to virt-install give it to virsh too). Michal