Re: Database cluster?

> Please forgive my ignorance (I haven't used Postgres for that long), but
> what are shm and sem?

shared memory and semaphores,interresting tidbit on Linux (2.4.0-test
series at least) is that shared memory can be a nodev filesystem (like proc or
devfs):

/dev/ide/host0/bus0/target0/lun0/part2 on / type ext2 (rw,errors=remount-ro,errors=remount-ro)
proc on /proc type proc (rw)
/shm on /shm type shm (rw)

and there's at least a few other nodev filesystem in the latest kernel
series:

nodev	shm
nodev	sockfs
nodev	pipefs
nodev	proc
	ext2
nodev	devfs

i'm doing some heavy research into these filesystem but so far,there's a
BIG lack of docs.

Alain