2008/9/30 Les Mikesell <lesmikesell at gmail.com>: > >> BTW, there is - even with current kernels - no speed gain in using RAID1 - >> see http://kernelnewbies.org/KernelProjects/Raid1ReadBalancing . > > I don't think I believe that - you can see the reads alternating drives by > watching the lights. Indeed, there is a patch linux-2.6-dm-mirroring.patch in Centos5.2 kernel sources which implements a proper body of choose-mirror() function.