Re: [Libguestfs] [PATCH v3 0/3] v2v: simplify driver copying from virtio-win iso

What resources are you talking about? The only costly resource eater is the auxiliary hypervisor backend instance; it used to be terminated indirectly via this forced GC here (after your fix), but now it's shut down explictly before leaving copy_virtio_drivers(). Anything else that can get collected here is negligible compared to what remains.