Re: RAID1 and load-balancing during read

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On Mon, Sep 10, 2007 at 10:29:30PM +0300, Dimitrios Apostolou wrote:
> Hello list, 
> 
> I just created a RAID1 array consisting of two disks. After experiments with 
> processes *reading* from the device (badblocks, dd) and the iostat program, I 
> can see that only one disk is being utilised for reading. To be exact, every 
> time I execute the command one of the two disks is being randomly used, but 
> the other one has absolutely no activity. 
> 
> My question is: why isn't load balancing happening? Is there an option I'm 
> missing? Until now I though it was the default for all RAID1 implementations. 

Did you read the archives of this list? This question has been answered,
like, 4 times already in the last months.

And yes, the driver does do load balancing. Just not as RAID0 does,
since it's not RAID0.

regards,
iustin
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