Date: Thu, 23 Aug 2012 02:43:51 +0200 From: Polytropon <freebsd@edvax.de> To: Michael Sierchio <kudzu@tenebras.com> Cc: RW <rwmaillists@googlemail.com>, freebsd-questions@freebsd.org Subject: Re: /tmp filesystem full Message-ID: <20120823024351.16385ade.freebsd@edvax.de> In-Reply-To: <CAHu1Y71Y_cxv_qgQaMmzdx5kZHtXGuLGaxx9QQAE8QBWGL3fUA@mail.gmail.com> References: <201208221934.q7MJYfwM063804@mail.r-bonomi.com> <1345664911.2501.8.camel@z6000.lenzicasa> <CAHu1Y72xwNevgKQ8eVYYOzGC80-511DtDe8kJMWbYJm5Tq28CA@mail.gmail.com> <20120822232112.07ac3517@gumby.homeunix.com> <20120822232907.34fc82fc@gumby.homeunix.com> <CAHu1Y71Y_cxv_qgQaMmzdx5kZHtXGuLGaxx9QQAE8QBWGL3fUA@mail.gmail.com>
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On Wed, 22 Aug 2012 17:35:29 -0700, Michael Sierchio wrote: > On Wed, Aug 22, 2012 at 3:29 PM, RW <rwmaillists@googlemail.com> wrote: > > > Sorry I misread the previous post which *was* referring to an md device, > > but the rest is right. > > Not really. ;-) The one compelling reason to use an md filesystem for > /tmp or /var is when you have no swap, and/or your root fs is read > only (or read mostly), as with embedded computers, Soekris boxes > booting from CF, USB stick, or even mSATA (I wouldn't swap on a > partition on an MLC mSATA device). > > In that case, you most certainly want to reserve the space for the > filesystem at creation time. Usually > /tmp -> /var/tmp is that case. For the mentioned appliances, that would not be a problem. However there's a distinction between /tmp and /var/tmp that can be summarized like this: The content of /tmp may disappear after a reboot (see clear_tmp_enable="YES" in /etc/rc.conf), whereas /var/tmp is to be preserved during reboot. Some programs rely on this behavior when putting "delete-temporary" and "keep-temporary" files into the respective directories. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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