ufs snapshot help

Valeri Galtsev galtsev at kicp.uchicago.edu
Fri Apr 24 14:49:33 UTC 2015

On Fri, April 24, 2015 6:38 am, RW wrote:
> On Thu, 23 Apr 2015 14:00:36 -0500 (CDT)
> Valeri Galtsev wrote:
>> Once (a while ago) I noticed Linuxes have started in addition to /tmp
>> using /var/tmp,
> FreeBSD has always had /var/tmp. It's perfectly sensible, file
> in /tmp don't need to survive a reboot, those in /var/tmp do.

Functionality wise, yes. Security/robustness wise, no. Well, one can have
both by creation of yet another partition and mounting it as /var/tmp.
Then regular user will not be able to just fill up /var (through /var/tmp)
thus stopping logs being incremented, preventing daemons being started
(the ones that need to write their PID into /var/run) etc.


>> and yet even worse /usr/tmp. What a brain dead
>> decision! It always is regretful when one sees "Linuxisms" creeping
>> in into better systems like FreeBSD ;-(
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Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247

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