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From: rmtodd@uokmax.UUCP (Richard Michael Todd)
Newsgroups: comp.os.minix
Subject: Re: The Adventures of Minix on the AT&T PC6300
Message-ID: <607@uokmax.UUCP>
Date: Fri, 26-Jun-87 16:39:09 EDT
Article-I.D.: uokmax.607
Posted: Fri Jun 26 16:39:09 1987
Date-Received: Sat, 27-Jun-87 11:52:24 EDT
References: <1226@chinet.UUCP>
Reply-To: rmtodd@uokmax.UUCP (Richard Michael Todd)
Organization: University of Oklahoma, Norman
Lines: 31
Keywords: Minix shutdown fsck

In article <1226@chinet.UUCP> jcs@chinet.UUCP (John C. Sucilla) writes:
>Since Minix does not have a shutdown script, it is necessary for
>hard disk user's to stop the system as described below to prevent
>file system damage.
>1) Issue a sync.
>2) Immediately kill -9 the /etc/update process (PID 12).
>3) Unmount all file systems.
>4) Stop the system.
>Since I began using this procedure, fsck has not had to do a single
>repair. Yea, I know... It's common sense, but maybe this will help
>somebody somewhere!
I doubt if all this caution is really necessary.  I just issue a sync, wait
for the I/O to finish, and then reboot (CTRL-ALT-DEL) or switch off power.
You shouldn't have to kill update, since all update does is do a sync call
every 30 sec., and once the file system is sync'ed once, subsequent sync calls
will do nothing unless some process has done some writing to the disk.  I've
been using the "sync once and reboot" procedure and have only had fsck report
problems when MINIX actually crashed/hung when executing a program such that
I couldn't shut down the system in an orderly fashion.  While the procedure
you give won't hurt anything, only the sync command is really needed. 


>Did anybody get the complete source for the version of ed that was
>recently posted? I seem to be missing several functions starting at
>dowrite() in the makefile.
There was a reposting of the ed files recently--apparently some sites got a
mangled version.
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Richard Todd
USSnail:820 Annie Court,Norman OK 73069
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