Date: Sat, 29 Aug 2015 22:03:11 +0200 From: Polytropon <freebsd@edvax.de> To: Warren Block <wblock@wonkity.com> Cc: freebsd-questions@freebsd.org Subject: Re: Replacing Drive with SSD Message-ID: <20150829220311.c7608be1.freebsd@edvax.de> In-Reply-To: <alpine.BSF.2.20.1508281235390.74312@wonkity.com> References: <CEAD84AD-341A-4FB9-A3A1-D0D5A550AFFD@lafn.org> <alpine.BSF.2.20.1508281235390.74312@wonkity.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 28 Aug 2015 12:47:30 -0600 (MDT), Warren Block wrote: > If you are a belt-and-suspenders type, create a smallish, maybe 4G, > partition on the drive that will never be used and leave it empty. > Don't write to it, ever. This is called over-provisioning. The drive > sees that all those blocks are free and it can swap them around for wear > leveling. This can be used in addition to trim. To extend the idea (because sometimes I am the axe-and-byrnie type): Does this also work with _no_ partitions at all? For example, when the device is formatted "as a whole" (dedicated), like # bsdlabel -w ada0 # bsdlabel -e ada0 set type "4.2BSD" for 'a' partition make 'a' same size as 'c' save # newfs -m 0 -i 16384 -b 16384 -f 2048 -U -t enable -n disable -L ssdroot /dev/ada0a # bsdlabel -B ada0 where /dev/ada0a has been prepared with bsdlabel to span the entire device (as in the example) - or in this case, to be a little bit less (4G) than the whole disk capacity? -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20150829220311.c7608be1.freebsd>