Re: IDE DVD reading & error handling

Mathias Kretschmer (
Tue, 04 Mar 2003 17:55:51 -0500

> I think its perfectly doable to set the maximum retries per
> device. Have a look at the current ide_error() and the error: handler
> in the relevant ide drivers (notably ide-cd).
>>I wonder if it would be possible to tune the IDE layer by i.e.
>>reducing the number of retries and disabling the controller reset, etc.
> A lot of the time you have to go through the controller reset. However
> cutting the retries down and having good readahead management on the
> I/O thread ought to still cope with that.

that's what I'm hoping for :)

Would it also be possible/make sense to never switch from DMA to PIO
mode since those DVD read errors are most likely not a DMA problem ?

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