Date: Sat, 28 Apr 2012 11:03:39 -0700 (PDT) From: Luke Dean <LukeD@pobox.com> To: Chris Rees <utisoft@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: Using TMPFS for /tmp and /var/run? Message-ID: <alpine.BSF.2.00.1204281042030.37187@tower.lukas.is-a-geek.org> In-Reply-To: <CADLo839bF5Q%2BiZ-ExQi8VhpuAmxu%2BXhvZT7hVW35FCFq_V1huA@mail.gmail.com> References: <4F746F1E.6090702@mail.zedat.fu-berlin.de> <4F74BCE8.2030802@vangyzen.net> <CACM2%2B-7Ahn6J=CTASe0g48%2BSD2vvLVd_hG3DRZmvO31QszG5Xw@mail.gmail.com> <20120330.151848.41706133.sthaug@nethelp.no> <CADLo839bF5Q%2BiZ-ExQi8VhpuAmxu%2BXhvZT7hVW35FCFq_V1huA@mail.gmail.com>
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On Fri, 30 Mar 2012, Chris Rees wrote: > On 30 Mar 2012 14:26, <sthaug@nethelp.no> wrote: >> >>>> However, if you always want to use tmpfs instead of stable storage, >>> please do not. Some people expect /tmp to be persistent. This is why >>> /etc/defaults/rc.conf has clear_tmp_enable="NO". Changing this would > break >>> the POLA. >>>> >>> This is a mistake. >>> >>> The default should be clear_tmp_enable="YES" >>> if only to uncover those broken configurations that expect /tmp to be >>> persistent. >> >> If you want to break POLA and make a lot of people angry, sure. >> Otherwise no. >> > > I would very much like an example of where /tmp is expected to persist. > > Chris Yes, I'm a month behind on my mailing list reading and this conversation is probably over, but I do have a personal example. In my periodic.conf, I have: daily_clean_tmps_enable="YES" daily_clean_tmps_days="30" I tend to have many distractions and work on many projects at the same time. I don't always know when I'm finished. Sometimes I just lose interest. I often don't remember to clean up after myself. These settings in periodic.conf allow me to set up temporary workspaces in /tmp. If I keep working on a project, my files remain. If I forget about it for a month, periodic will clean up my mess. If someday the default behavior were changed to make /tmp a memory-mounted filesystem or to clean it out on every reboot, I think I could set daily_clean_tmps_dirs to another directory and move my sandbox someplace else. I would very much appreciate some warning, but this would not be a problem for me.
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