[CentOS] Re: question about software Raid 1

Les Mikesell lesmikesell at gmail.com
Wed Oct 1 12:39:09 UTC 2008


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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