I take an internal snapshot (VM is 'shutdown' when taking it) of a qcow2 image
like this:
$ qemu-img snapshot -c sn1 [my_image].qcow2
I see that snapshot when asking for:
$ qemu-img info [my_image].qcow
but do NOT see it with:
$ virsh domblklist [my_domain]
is that how it is meant to be?