Re: [Libguestfs] [PATCH nbdkit 1/2] server: Call .get_ready before redirecting stdin/stdout to /dev/null.

VDDK plugin + --run was broken because of the following sequence of events: (1) After .config_complete, server redirects stdin/stdout to /dev/null. (2) Server then calls vddk_get_ready which reexecs. (3) We restart the server from the top, but with stdin/stdout redirected to /dev/null. So saved_stdin/saved_stdout save /dev/null. (4) run_command is called which "restores" /dev/null as stdin/stdout. (5) The output of the --run option is sent to /dev/null. In addition to fixing this problem with VDDK, it also makes general sense not to redirect stdin/stdout before calling .get_ready since this callback is supposed to be the last chance before the server daemonizes, and redirecting stdin/stdout is part of daemonization.