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no dma on raid devices



Hi!

Is it normal, that I can not enable the dma mode on my cd devices, which 
are connected to raid. If I enable the dma on my dvd-rom, I can not 
read from the discs, but if I disable the dma, the reading is very 
slow, and eats lot of cpu res. I'm using 2.4.26 kernel, maybe I should 
use 2.6, or this is a normal issue on a raid drive?
Thanks!

Daniel

-- 
LeVA



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