In the interests of "closure", the plethora of libvirt updates which came down the line yesterday from fedora seem to have fixed the problem. I can now create virtual networks again. Yay!

@stacksofplates
Yes I just tried creating it with virsh and it was created without a problem.
However starting it leads to the same error: The name is not activatable.

I didn't realise virt-manager was being deprecated. Is there a replacement planned?

@black3dynamite

And your fedora 30 host was fully up to date?

I've finally found someone referencing the same error message: https://forums.whonix.org/t/installing-kvm-conflicting-directions/7582

It was 4 days ago so agrees with the theory that the error is caused by a very recent change in the packages.

@JaredBusch

Sure - but the reason I noticed this is because the test-network (which I setup when I setup the host) stopped working so the test machines connected to it lost their network. I couldn't reactivate this. The error message was the same as when trying to create a new virtual network.

Fortunately these are test machines so I can live without it for the moment.

A second test-network I'd set up on the same host is still working, which is strange.

Thanks for testing - glad it's not just me! I haven't been able to find anything relating to the error on google. Maybe I just need to wait a few days to see if a fix comes along.

@JaredBusch
I use a bridge onto the LAN for the production stuff. I've also got a test network that I created through virt-manager using most of the defaults that's just available internally to the host.

Edit: just seen your reply. Yes that's exactly what's happening for me.

Hi all,

Is anyone running KVM on Fedora 30?
I think as a result of some recent OS updates, sometime between last Wednesday and today, I've lost the ability to create virtual networks (at least through virt-manager).

Error message is: Error creating virtual network: The name is not activatable

Anyone else seeing similar?

Thanks

I've got the Huawei P20 Pro.
I've had it for 9 months or so. Previous phones were a Samsung Galaxy S7 Edge which my 2 year old son threw down a stone stairs and a OnePlus 2 which he threw into the toilet. I can honestly say the Huawei phone is the best I've had by distance. The camera setup was a step above the other falgships at the time and I believe the P30 continues that trend. When my son finds a way to destroy this one I'll definitely be looking at Huawei again, if they're not completely crippled by the Google stuff.

Congrats! and Thanks!

@sanwin

Actually am I talking rubbish there? The hypervisor will still be Hyper-V so the VM's theselves won't require any conversion?
Just the VSAN software itself will be running in a Linux VM rather than a Windows one.