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[Bug-ddrescue] --input-position and --min-read-rate parameters ignored

From: julienr
Subject: [Bug-ddrescue] --input-position and --min-read-rate parameters ignored
Date: Mon, 16 Jun 2014 10:55:40 +0200


- i : --input-position : starting position in input file 

This parameter is buggy : it is taken into account only when its value
is larger than the current input position. If one want to use an offset
that is smaller than the current position, one first have to the value
for "-i" near the end of the drive in order to finish the cloning. Then
only, we can start the cloning again with a smaller "-i" value.

-a / --min-read-rate : Minimum read rate of good areas in bytes/s 

I tried setting it to "-a 20000", but I still oberve very slow reading
rates, sometimes of only 256 B/s. 
I hoped that setting "-a" would help speeding up ddrescue and clone the
easier areas first. 
But after several passes, the software is trimming failed blocks and the
speed is much slower than thus set by "-a".
I'm not sure if the value of "-a" is ignored or if there is something
that I did not understand.



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