[CentOS] Re: question about software Raid 1
Les Mikesell
lesmikesell at gmail.comWed Oct 1 12:39:09 UTC 2008
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Alexander Georgiev wrote: > 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. Which also explains why, once my mirror was corrupt, that a new problem would show up every few weeks even after the cause (bad RAM) was fixed. -- Les Mikesell lesmikesell at gmail.com
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