Boot hangs starting postfix

[Joerg Sonnenberger]

Can you try uncomment following line (521) in kern/kern_lockf.c and see
if you still hit that problem?

do_wakeup:
#ifdef LOCKF_DEBUG
	if (lf_print_ranges)
		lf_print_lock(lock);
#endif
	if (wakeup_needed) /* <-- this one! */
		lf_wakeup(lock, start, end);
	error = 0;

It does decrease the performance, but it isn't necessary for operation.
Also, it could help if you can provide either
a) ktrace output of all postfix processes or at least the bounce
b) the dmesg output of a kernel compiled with LOCKF_DEBUG in CFLAGS,
   use "w lf_print_range 1" from ddb prompt to activate this after the
   initial boot sequence [beware, heavy]
c) a way to reproduce this problem, so I can fix it myself

Joerg