On Fri, Dec 05, 2014 at 05:08:59PM +0400, Vasiliy Tolstov wrote: > 2014-12-05 16:02 GMT+03:00 Bryn M. Reeves <bmr@xxxxxxxxxx>: > > iirc the patches showed no measurable performance gain. > > > > Regards, > > Bryn. > > > Yes in normal read speed not changed, but in case of fully loaded > system when one member fully utilized by io, why performance in this > case not increased? I don't think this was ever really explained but the testing that was done failed to show a benefit from the patches and as they added more complexity to the target for no gain they were not merged. As Zdenek says today the MD-based dm-raid targets are now available and those should expose all the features of the MD stack (including read balancing). Regards, Bryn. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
