Re: [Bug-ddrescue] Suggestion: Image size vs. source size sanity check

[Andrew Burgess]

On 04/20/2011 07:44:25 AM, Burkart Lingner wrote:

> Obviously, what I just described was clearly a usage error on my  
> part. Nevertheless I think ddrescue could be improved to help users  
> not to make the same mistake. It could read the size of the image  
> from the log file and then, if it doesn't match the size of the  
> source device, show a warning like "You said you'd like to image  
> /dev/sda whose size doesn't match that of the existing image. Are you  
> sure you want to continue? (y/n)"

there's also blkid that can help identify disks.
(its what newer distributions use to match disks to filesystems in  
/etc/fstab)
and a libblkid that makes it easy to use from C