--read "/home=>/tmp/home" leads to fail boot

[hamo]

Create through command:
python2 /usr/bin/novm create --com1 --nofork --read "/home=>/tmp/home"

and system hangs at
[ 0.784444] switch_root: cannot access /proc/self/fd/3: No such file or directory
[ 0.790306] switch_root: failed to execute /proc/self/fd/3: No such file or directory

Without --read "/home=>/tmp/home" works fine.