I took an older .img file I had available (any should do) and was able to confirm with just guestfish.
>From there I tried to simplify the case and reached this: $ qemu-img create -f qcow2 test.img 10M $ sudo guestfish -a test.img (guestfish) run (guestfish) tar-out / - | tar tf - I was able to confirm the case and the workaround helped. I should soon be able to build a version which has the addition of dash in the package, but not sure if it will be today. ** Changed in: virt-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1793056 Title: On Ubuntu 18.04 virt-copy-out fails with "tar: This does not look like a tar archive" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libguestfs/+bug/1793056/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs