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From: | Antonio Diaz Diaz |
Subject: | Re: [Bug-ddrescue] Feature request (if it's allowed here :) ) |
Date: | Mon, 12 Sep 2011 17:00:50 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.7.11) Gecko/20050905 |
Hello Oleg, of course feature requests are allowed here. :-) Oleg Krutov wrote:
1) I noticed that when copying clusters that are non-4KB-aligned (eg, because of bad blocks), copying speed considerably slows down and manually aligning copying area one can achieve a full speed
Maybe you are trying to read 512-byte sectors from a disc with 4096-byte sectors. In this case --block-size=4096 should give you full speed.
2) Although I don't think that feature will be in great demand, maybe there are folks like me :) that use ddrescue for different tricky things (eg, external generation of log files for copying by one physical head at a time etc.) Making these things, there is a need to introduce one more state for disk area, say, "ignored" - it means, that no actions need to be performed with this area at all, just skip it during copying and leave intact this record in logfile.
Please, read this thread[1] and comment back any improvement you have to the solution proposed there. We have yet to determine what is the best way (if any) to set the minimum size of a regular output file when using the option --domain-logfile.
[1]https://lists.gnu.org/archive/html/bug-ddrescue/2011-05/msg00010.html Best regards, Antonio.
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