I don't know if anyone recalls enough 4.x to say anything useful here, but if anyone does and cares to comment....
The machine: 4.0.1 i386. Two CPUs. (Kernel has MULTIPROCESSOR, MPBIOS, and APM_NO_IDLE turned on.) NFS-mount a filesystem with a big (half-terabyte) file in it. vnconfig that onto vnd0. Mount /dev/vnd0d. Write stuff to it. Machine locks up. Responsive to ping, but userland is totally wedged, doesn't even respond to RETURN on the console. Break into ddb and do ps and find pagedaemon is waiting on emergva. It appears to be deadlocked against itself; my impression from the stack trace is that it's trying to page something out and finds itself wanting to page something in to do so. Is this a case of "don't do that, then", or should this work and I just need to track down a bug? /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mo...@rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B