Date: Fri, 27 Sep 2002 14:21:18 +0300 From: Petri Riihikallio <Petri.Riihikallio@Metis.fi> To: questions@FreeBSD.ORG, Kirk Strauser <kirk@strauser.com> Subject: Re: How to shut down cleanly by killing power Message-ID: <a05111b07b9b9ec1c1aac@[192.168.0.2]> In-Reply-To: <bulk.28113.20020926143904@hub.freebsd.org> References: <bulk.28113.20020926143904@hub.freebsd.org>
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Thank you for your thoughts. >I haven't actually done this, so take my advice with a grain of salt. > >I think that the biggest hurdle will be making sure that your filesystems >are cleanly unmounted. I would *think* that: > > umount -af > sync; sync; sync > umount -fr / > >should unmount everything except / , which it would remount as read-only. Yes, something like that should be done. There are still all the system daemons (sshd, postfix, named..) started from rc that are still running. Should I try to notify them first? How will they react when disks change to read-only? Here is a snippet of SuSe Linux halt script for apcupsd: ># Write to wtmp file before unmounting /var >$command -w > >echo "Sending all processes the TERM signal..." >killall5 -15 > >if [ "$1" = "fast" ]; then > sleep 1 >else > sleep 5 >fi > >echo "Sending all processes the KILL signal..." >killall5 -9 > >echo "Turning off swap." >sync ; sync >swapoff -a > >echo "Unmounting file systems" >umount -av > ># See if this is a powerfail situation. >if [ -f @PWRFAILDIR@/powerfail ]; then > echo "APCUPSD attempting to shutoff UPS power" > echo > @sysconfdir@/apccontrol killpower > echo >fi I believe somebody (more competent than I) has written the necessary script for FreeBSD. -- Cheers, Petri Metis / Petri Riihikallio GSM: +358 400 505 939 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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