On Mon, Oct 16 2017, Reindl Harald wrote: > Am 16.10.2017 um 15:54 schrieb Wols Lists: >> Raid 10 is a complicated subject what with near and far, and whether it >> will grow, etc etc. >> >> I'm planning to raid-10 my swap partition, and while it doesn't matter >> in the slightest because destroying and recreating will be no hassle for >> swap, I'd like to understand what's going on. >> >> If I remember correctly, there was a thread a little while back on >> growing a raid-10? And you can't (for certain values of "can't" :-) do it? >> >> Where's the best place to find info about near, far and offset layouts? > > http://xmodulo.com/setup-raid10-linux.html This patch has some good stuff, but Chunk Size, as per the Linux RAID wiki, is the smallest unit of data that can be written to the devices I wonder where the Linux RAID wiki say that. It is wrong. The smallest unit of data that can be written to the devices is the block size, which is hardware dependant and typically 512bytes or 4K. This is not the same as the chunk size. NeilBrown
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