Re: [Bug-ddrescue] GNU ddrescue 1.18-pre3 new option complication

[Scott D]

Might have found a sligh flaw with the "-O" option idea. The flaw is 
that it does not take an actual error (at least not one that ddrescue 
sees) to cause the slowdown. If there are difficult spots on the disk 
but no reported errors, it can still cause the reads afterwards to 
reduce speed. All my previous experience with slowdown was with errors, 
until now. I can confirm that closing and reopening after a detected 
slowdown still has a positive effect, and brings the read speed back up. 
This makes it a little bit more tricky to implement though...

Scott


On 8/21/2013 6:34 AM, Antonio Diaz Diaz wrote:
> GNU ddrescue 1.18-pre3 is ready for testing here
> http://download.savannah.gnu.org/releases/ddrescue/ddrescue-1.18-pre3.tar.lz 
>
>
> The sha1sum is:
> 3f9a91d613edbccb993b3d47d139c35d458fc0f6 ddrescue-1.18-pre3.tar.lz
>
> Please, test it and report any bugs you find.
>
> GNU ddrescue is a data recovery tool. It copies data from one file or 
> block device (hard disc, cdrom, etc) to another, trying hard to rescue 
> data in case of read errors.
>
> GNU Ddrescuelog is a tool that manipulates ddrescue logfiles, shows 
> logfile contents, converts logfiles to/from other formats, compares 
> logfiles, tests rescue status, and can delete a logfile if the rescue 
> is done.
>
> The homepage is at http://www.gnu.org/software/ddrescue/ddrescue.html
>
>
> Changes in this version:
>
>   * The new option "-O, --reopen-on-error" has been added.
>
>
> Regards,
> Antonio Diaz, GNU ddrescue author and maintainer.
>
>
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