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Re: [Bug-ddrescue] Suggestion to improve recovery rate during splitting


From: Antonio Diaz Diaz
Subject: Re: [Bug-ddrescue] Suggestion to improve recovery rate during splitting phase.
Date: Wed, 23 Jan 2013 18:11:24 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.7.11) Gecko/20050905

kwb78 wrote:
There are no such areas. After trimming, all non-split areas are flanked by bad sectors, or else they would have been fully copied or trimmed out.

That is interesting, because that is not what I am seeing with the drive I
am working on at the moment.

Oops! You are right. In version 1.14 ddrescue stopped marking as bad-sector the first sector of a failed multi-sector read because the kernel seems to return a total failure if some of the sectors are indeed bad.

Now I have another interesting decision to make; should ddrescue try first the (possibly many) non-split areas adjacent to good areas, or the larger non-split areas flanked by bad sectors (if there is any)?


Regards,
Antonio.



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