On 29/08/2017 at 15:20, Simon Hobson wrote: > Alessandro Selli <alessandrose...@linux.com> wrote: > >>> I figure that over sizing the >>> drive will help with wear leveling. I'm not sure if that is a valid >>> assumption, however. >> >> I am convinced it is. The more cells to pseudo-randomically spread writes >> to, the lower the number of write operations that are performed on each one >> of them. > > Provided that the drive knows the block is "unused" - which requires that the > OS support TRIM. Without TRIM, when a block changes from in-use to free, the > drive will still see it as "a block with data in it" - and thus it cannot > erase it and put it in it's free pool.
Wear-levelling today is handled by the firmware transparently to the OS. Trimming only affect the filesystem's block-allocator algorithm, not wear-levelling. Alessandro _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
