Re: [Bug-ddrescue] GNU ddrescue 1.18-pre3 new option complication

[Antonio Diaz Diaz]

The kernel code linked by Sam gave me some ideas. It seems the kernel 
counts the number of different classes of errors occurred in the last 5 
or 10 minutes. So it may be a good idea to fly away from errors _and_ 
slow areas.

I have just uploaded version 1.18-pre4[1] with the effect of 
'--reopen-on-error' limited to the copying phase, but reopening the 
input file also on slow reads (i.e., every time ddrescue skips ahead).

A slow speed while reading sector by sector (while trimming, splitting 
and retrying) may help to read more sectors, as the kernel developers 
intend.

I have also changed the default value of '--min-read-rate' to 0 (auto), 
so that slow areas are skipped by default. Maybe the default value 
(average_rate / 10) is too low and will need furter adjustment.

[1]http://download-mirror.savannah.gnu.org/releases/ddrescue/ddrescue-1.18-pre4.tar.lz


Hope this helps,
Antonio.