shutdown

wnp@killer.Dallas.TX.US (Wolf Paul) (05/05/89)

Having shut down my machine last night because of a thunderstorm overhead,
I noticed again that the /etc/shutdown  procedure on my UNIX-PC is about
ten times as fast as on any other UNIX system I have ever seen.

At the same time, every time I reboot the machine after a shutdown, it fails
fsck the first time round.

On all other systems I have seen, as a rule, if the system was shut down 
properly, it would pass fsck the first time; it would fail only if either it
was simple powered down or reset without running shutdown, or if there were
serious problems with the file system.

I suspect that this is caused by the fact that the UNIX-PC /etc/shutdown
makes no attempt to kill running processes before syncing the system for
the last time, thus the system goes down with open files, etc.

Does anybody have a customized /etc/shutdown which cleans up properly, and
causes the system to reboot with the filesystem in good condition?

Still trying to convert this machine into a real UNIX environment,

Wolf
-- 
Wolf N. Paul * 3387 Sam Rayburn Run * Carrollton TX 75007 * (214) 306-9101
UUCP:   {texbell, killer, dalsqnt}!dcs!wnp
DOMAIN: wnp@killer.dallas.tx.us or wnp%dcs@texbell.swbt.com

sheldon@quest.UUCP (Scott S. Bertilson) (05/09/89)

  I'm running 3.5 and 3.51 (2 machines).  Both shut down and reboot
cleanly.  I think the speed of shutdown is due to the fact that there
aren't many daemons running and that it isn't V.3 with it's fancier
scheme of numerous scripts to start/stop daemon processes.  On
3.51, "/etc/profile" contains code to complete the shutdown which
includes a "killall" to zap all processes on the system.
  In addition, I've actually modified my "shutdown" script to
create a "/fastboot" which is noticed and removed by "/etc/rc"
to bypass the "fsck".  I've been running this way for more than
a year and a half without problems...running periodic "fsck"s which
come up clean.  Notice that the file is only created on a clean
shutdown...not on a crash.
  The mod to "/etc/rc" is to change:
	/etc/fsck -pq
to
	rm /fastboot 2>/dev/null || /etc/fsck -pq
The system still claims to be performing a file system check, but
doesn't actually do it...
-- 

Scott S. Bertilson   ...uunet!rosevax!rose3!quest!sheldon
			scott@poincare.geom.umn.edu