Tejun Heo wrote:
Speed down rules were too conservative. Adjust them a bit.
* More than 10 timeouts can't happen in 5 minutes as command timeout
is 30secs. Lower the limit for rule #1 to 6.
* 10 timeouts is too high for rule #3 too. Lower it to 6.
* SATAPI can benefit from falling back to PIO too. Allow SATAPI
devices to fall back to PIO.
..
Mmmm... I see two remaining problems with this:
-- bad sectors (media errors) will cause inappropriate speed-downs.
-- deliberate (or otherwise) errors via SG_IO will cause inappropriate
speed-downs.
Right?
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