Hello.
Jason Day wrote:
This is more of a design than bug issue, I think. The displayed results are
comprehensive. However, with regards to errors, it doesn't specify if it's
in terms of sectors, blocks, or some other denomination. Ex: GNU ddrescue
images a drive and reports 9 errors and an errsize of 60 GB.. What does
that mean? Is it 9 bad blocks accumulating 60 GB of data?
Exactly.
The goal of ddrescue is to detect the bad areas and avoid them until
there are no more areas to try, so it reports as errors the number of
bad areas surrounded by good (or untried) areas.
http://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html#Algorithm
"Note that as ddrescue splits the failed blocks, making them smaller,
the total error size may diminish while the number of errors increases."
Regards,
Antonio.
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