Hi Enthalpie,

I could not yet see what the actual error is - you wrote "after update the LVM is not visible in the libvirt manager". Could you please be a bit more specific on what you're trying to do, what you expected and what you got instead?

Your actions on /dev/sda3 don't seem to get you anywhere - running fsck on a PV is not helpful and might even harm things, had it decided to try to "correct" things. How much are you into details of LVM? I'd have expected you to run "lvs" to see a summary of available logical volumes, which are the "block devices" that you'd use to i.e. put file system on.

But again - what's it you expected to see in virt-manager that's you found missing or wrong?