Hello Dennis, Dennis Juhler Aagaard wrote:
First i like to thank you for a really great program. I use it almost daily. :-) I use it on Mac OS X both Snow Leopard and Lion, and i think i have found a bug. I just want to let you know before you consider releasing any staple version of the Version 1.15.
Thanks.
When i try to recover harddrives larger than about 320Gb, the speed of the recovery goes from 20-40 mB/s down to merely 200kB/s after 320'ish Gb rescued data and the ddrescue program start consuming about 100% of processing power.
What is the filesystem of the destination drive? Some filesystems like NTFS3g seem to have problems writing large files.
What is the size of the logfile? Writing a very large logfile also could cause this problem.
Firstly i thought it was because of a faulty drive, but now i am beginning to see a pattern here with several disks.
Do you mean "several source disks, but maybe the same destination disk"?
I use the command sudo ddrescue -S -r3 /dev/diskXsX /PATH/DiskImage.dmg /PATH/DiskImageLog.log
Have you tried without the '-S'?
And that command is the one i have been using in a script for the last 2 years or so. so that shouldnt be the problem. I'll investigate further, but i am not the C-developer shark, actually i am just at the beginning of learning objective-c to wrap up your program in a nice GUI running on the Mac OS X.
Ddrescue uses 64-bit sizes, which means most probably slow recovery is because of some filesystem problem rather than a bug in ddrescue. Finding the cause surely does not require to be a C-developer shark. :-)
Best regards, Antonio. _______________________________________________ Bug-ddrescue mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-ddrescue
