Re: [Bug-ddrescue] ddrescue very slow, and specific data to copy help.

[Andreas Boman]

Hi Antonio,

On 05/08/2013 10:07 AM, Antonio Diaz Diaz wrote:
> You did a first pass from drive to drive with the option -g 
> (--generate-logfile)? If you did, you'll need to begin the rescue 
> again with an empty logfile. All your copy is garbage.
>
> --generate-logfile is so dangerous when not used correctly that it has 
> its owh chapter in the manual:

I have now literally donned my RTFM t-shirt, and will follow it. Thank 
you for taking the time to answer and smacking me with the clue stick.

> > Currently I can live with this amount of data loss, however it looks 
> > like the md superblock has not been copied over to the new disk, 
> > although it is fine and readable on the old one, and I need that to 
> > restore the array with the new disk.
>
> If the destination drive had non-zero data in the place where the 
> superblock resides, ddrescue won't copy it (it thinks the superblock 
> is already copied).

The disk should have had no data, it was brand new. Regardless I'm 
starting over with no --generate-logfile and I actually have an 
identical disk now that I will use instead as well (also brand new).

Thank you!
Andreas