Hi,
when using options -i and -o to recover only part of a disk to a file,
-F cannot be used to fill the bad blocks later from a small file.
Example:
1. Recover partition at LBA 10000000-11999999 to a file:
# ddrescue -i 10000000b -s 2000000b -o 0 bad_disk file.img file.log
2. Mark bad blocks in the image file with some data from a small file:
# ddrescue -i 10000000b -s 2000000b -o 0 -F - fill_file file.img file.log
ddrescue: can't start reading at pos 5120000000
ddrescue: input file is only 20 bytes long.
The -i is necessary, because ddrescue records the original physical
offsets in the logfile.
I would suggest to start the input file at (input_position % input_size)
when -F is specified.
Hmm...would it make sense the store the input/output_position offset in
the logfile also?
Regards,
Christian
PS: Just testing 1.7-pre2 on Cygwin with a real world bad disk with ~100
bad blocks and failed SMART status (out of spare blocks). Looks good,
~20 blocks recovered in the last few hours :-)
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