Greg Folkert said on Tue, Dec 02, 2003 at 06:07:41PM -0500: > On Tue, 2003-12-02 at 17:20, Mark Ferlatte wrote: > > Paul Morgan said on Tue, Dec 02, 2003 at 03:49:52PM -0500: > > Right... so, again with the "why put /usr on a seperate partition from /"? > > Making / large enough to hold /usr certainly fulfills the req of the > > contents of the root filesystem being adequate to boot, restore, recover > > and repair the system. > > /usr should NOT be needed to repair, recover, maintain, restore or boot. It > goes against everything I have ever known about UNIX/Linux/*BSD. That's not what I suggested. I agree: the contents of /usr should not be needed to recover.
However, just because it's not needed doesn't mean it couldn't be there, fairly safely from what I can tell. That's all I am trying to establish. > > > /tmp and /var/tmp have different purposes. Check FHS again. Actually, I > > > have both /tmp and /var/tmp on their own logical volumes. > > > > Okay, so neither your /tmp or /var/tmp volumes are available at boot time. > > So, why have a seperate /tmp and /var/tmp? > > Because it allows you to keep systems over runs from disabling the machine. > Ever tried to access a machine with a FULL / and/or /var? Yes. It is unpleasant. I think there is a misunderstanding here, though: I'm not suggesting that /var/tmp or /tmp couldn't or shouldn't be a seperate partition. I am questioning the need for two seperate yet nearly identical temporary file locations that appear to have nearly identical semantics. I believe that Karsten's email points out some subtle differences between them, though. > > According to the FHS 2.2, the only difference between /tmp and /var/tmp is > > that data in /var/tmp be "more persistant" than data in /tmp, but the only > > restriction on /tmp is that programs not assume that data in /tmp persists > > between invocations of a program. > > > > In other words, /var/tmp appears to completely fulfill the requirements of > > /tmp, which makes me wonder why they are seperate. > > Because they are treated differently in practice... which allows something to > store a map of stuff, or a session cache in /var/tmp and to use /tmp as a > spillover area for temp data to be worked on. This is fair, although there is no real reason for the app to care that /tmp and /var/tmp are the same, provided there is sufficient space in the tmp partition. M
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