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Re: [Bug-ddrescue] Weird behavior with options -d and -c

From: Antonio Diaz Diaz
Subject: Re: [Bug-ddrescue] Weird behavior with options -d and -c
Date: Thu, 04 Dec 2008 17:10:56 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.7.11) Gecko/20050905

xerces8 wrote:
Reading more sectors in one go gives higher transfer rates.

Unless you ask the kernel to read more sectors at a time that those that for some reason it can manage.

So why does ddrescue behave that way ?
It gets a error response from kernel and assumes the sectors are unreadable ?

It assumes they are unreadable *as requested*. Later it will try to read them in smaller chunks (Splitting error areas...). What else could it do, discard the values you supplied and use its own ones?


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