Re: systemd vs. autofs/nfs
On Thu, Jul 28, 2016 at 06:45:17PM -0400, bruce wrote:
Hey David..
Thanks for the thoughts on this...
Would you mind posting/pasting what your code/shell scripts are/is.. I'm sure
someone will need something similar in life!
Well, I have. And you have regurgitated them below (in your somewhat
inconsiderate top-posting).
The locate-user-daemons program is kindly provided by Tom Horsley
at his website, also listed below.
It's all here, for a careful reader.
-Peace!
On Thu, Jul 28, 2016 at 5:26 PM, David A. De Graaf <dad(a)datix.us> wrote:
On Thu, Jul 28, 2016 at 02:53:34PM -0400, Tom Horsley wrote:
> On Thu, 28 Jul 2016 14:37:41 -0400
> David A. De Graaf wrote:
>
> > Have I overlooked something obvious? Is there a way to make systemd
> > perform the simple function 'shutdown' smoothly, reliably and
quickly?
> > If anyone knows how, I would love to hear it.
>
> I can't make systemd itself work, but I've been using an
> outside systemd solution for a while now: I setup
> an alias for the "reboot" command that arranges to
> kill off all the things systemd unreasonably waits
> for, then does a real reboot.
>
> Since systemd now has nothing to stop it, it reboots
> rather fast (until something new shows up which I have
> to track down and add to my list :-).
>
> My current set of things to do before shutdown includes:
>
> umount -l -t nfs -a
> apachectl -k stop
> kill all the "user deamon" process trees.
>
> The user daemon stuff is handled by a program
> described here:
>
> http://tomhorsley.com/game/punch.html
>
Thank you Tom Horsley for all your brilliant insights,
and especially this one.
I have taken your 'locate-user-daemons.c' program, lock, stock
and barrel, stirred with some other condiments and come up with
this alternate /usr/local/bin/reboot script that works for me:
$ cat /usr/local/bin/reboot
# Precede normal reboot command with unmounting of nfs mounts
# and stop other impediments to progress
/usr/local/bin/nfsumount
/usr/bin/pkill -9 gkrellmd
/usr/local/bin/locate-user-daemons | /bin/bash -i
systemctl reboot
where /usr/local/bin/nfsumount contains:
# Forcibly umount all autofs-mounted filesystems
mount | grep /net/ |
sed -e 's/.*on //' | sed -e 's/ .*//' |
sort -u | tac |
while read fn; do
umount -fl -t nfs $fn &
done
Your simpler 'umount -l -t nfs -a' works for mounts listed
in /etc/fstab, but not for autofs-mounted filesystems, I believe.
I (re)discovered that gkrellmd takes a full 90 sec to be stopped
by systemd, but no time at all by pkill; I added that.
As you say, more may turn up.
Now the 'reboot' command makes my systems shut down smoothly, reliably
and quickly, as proper Linux systems should.
--
David A. De Graaf DATIX, Inc. Hendersonville, NC
dad(a)datix.us www.datix.us
If lawyers are disbarred and clergymen defrocked, then doesn't it follow
that electricians can be delighted, musicians denoted, cowboys deranged,
models deposed, tree surgeons debarked, and dry cleaners depressed?
-- R. C. Bagley III