Date: Tue, 9 Sep 2014 16:20:23 +0100 From: RW <rwmaillists@googlemail.com> To: freebsd-questions@freebsd.org Subject: Re: A litmus check request Message-ID: <20140909162023.3f0cb6d7@gumby.homeunix.com> In-Reply-To: <540E21A0.4070103@comcast.net> References: <540E21A0.4070103@comcast.net>
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On Mon, 08 Sep 2014 15:37:36 -0600 Dave Babb wrote: > I am about to do a lot of compiling. My copy of FreeBSD10.0 x64 P7 > runs on a 1TB Samsung EVO. I used wblock's excellent articles to set > it all up so that trim was utilized. > > I am asking that someone please review this attached fstab and > validate for me, that at no time will any compilation intermediate > files, or ".o" files will be written to the SSD. I am trying to > protect the SSD. If you haven't already done so I'd suggest you have a look at the output of smartctl -a <device> (from sysutils/smartmontools) and see if Samsung have added an attribute to track total writes into the NAND flash. I recently installed an SSD, and found buildworld produced 6 GB of writes and buildkernel a further 6 GB. It's a substantial overhead, but not ruinous if you occasionally want to install world by rebooting into single-user mode. An alternative might be to build with MAKEOBJDIRPREFIX set to /tmp/obj and then copy /tmp/obj to /usr/obj.
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