Date: Wed, 28 Jan 1998 06:12:52 -0800 From: Don Lewis <Don.Lewis@tsc.tdk.com> To: "Jeffrey J. Mountin" <mountin.man@mixcom.com>, andrew@pubnix.net, lamaster@george.arc.nasa.gov Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Sendmail - low on space Message-ID: <199801281412.GAA06432@salsa.gv.tsc.tdk.com> In-Reply-To: "Jeffrey J. Mountin" <mountin.man@mixcom.com> "Re: Sendmail - low on space" (Jan 27, 4:19pm)
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On Jan 27, 4:19pm, "Jeffrey J. Mountin" wrote: } Subject: Re: Sendmail - low on space } I forget the defaults, but do recall that as packages were added to a } system, the wasted space having separate /var and /usr partitions was an } issue and forced me to start over fresh. :/ This is still a problem if you make a combined usr+var partition too small. When you add all those packages, you'll end up without enough space for /var. I generally figure out how much space to dedicate to /usr upfront (better planning tools would be helpful) and make a guess based on experience for /var. If /var turns out to be too small, it's pretty painless to move it to a bigger partition or disk since I don't have to touch the stuff in /usr. Doing admin work is a lot more pleasant if /usr is online. For safety reasons, I like to mount publically writable partitions with the nosuid/noexec and nodev options. This isn't possible if you combine /usr and /var. /dev/sd0s1g /usr ufs rw,nodev 1 1 /dev/sd0s1e /var ufs rw,noexec,nodev 1 1 In some environments, it may even be possible to mount /usr read-only for additional protection. With separate partitions, reboots will often be faster because fsck won't need to touch /usr, which has lots of files. It will only need to check the more active /var partition which usually has a much smaller number of files. If you have more than one machine, using separate partitions gives you the option of sharing /usr over NFS. The stuff in /var isn't shareable. If you want to combine partitions, I'd recommend combining / and /usr, since they are both relatively static, and they are the only partitions which normally can't be mounted nosuid. The only downside is that it makes growing /usr less convenient. --- Truck
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