This test fails for reasons I have not fully understood yet. However
one thing I noticed is that the Unix domain socket and PID file used
the tests are placed in the tests/ directory, not the tests/nbd/
subdirectory, so let's fix that:
Starting qemu-nbd fedora-nbd.img -t --pid-file /home/rjones/d/libguestfs-rhel-9.2/tests/nbd.pid --format raw -p 63668 ...
Starting qemu-nbd fedora-nbd.img -t --pid-file /home/rjones/d/libguestfs-rhel-9.2/tests/nbd.pid --format raw -p 60684 ...
Starting qemu-nbd fedora-nbd.img -t --pid-file /home/rjones/d/libguestfs-rhel-9.2/tests/nbd.pid --format raw -k /home/rjones/d/libguestfs-rhel-9.2/tests/unix.sock ...
Fixes: commit 6d32773e81
98ab261a05