>> Especially with SSDs. One must find out the blocksize used by his/her SSDs. >> >> With spinning disks, setting ashift=12 is enough since no spinning >> disks have sectors larger than 2^12 bytes. >> >> With SSDs, one might have to set ashift=13 or even ashift=14. > > May I suggest that we should somehow collect all these small but > important issues for reference? Wiki?
This could be useful: http://www.funtoo.org/wiki/ZFS_Install_Guide - Grant
