[Beowulf] Slow RAID reads, no errors logged, why?

[Chris Samuel]

On Tuesday, 20 March 2018 11:55:01 AM AEDT Jörg Saßmannshausen wrote:

> Thus, it could well be that the controller is slowing down the
> rest of the RAID as there is a bottle neck.

As David is testing reading from a RAID-5 array then (IIRC) it needs to read 
the stripe from all active drives to retrieve the data, and if one drive is 
slower than the rest then the controller will end up waiting for that drive.

-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC