I can't stop the server started with the -b option, I try to kill it with kill and the process number, but I find the process stuck again.
i also notice that i can't restart my rasberry anymore i think it hangs because virtualhare server is still running
.
VirtualHere wont hang anything, its some configuration issue with your pi.
Just do
sudo pkill vhusbd
you will need to wait a few seconds for it to stop or use the
sudo pkill -9 vhusbd
to kill immediately