[Bug-ddrescue] Forgot the mapfile.....

[David Morrison]

I have a disk recovery under way. I used this command on a Mac:

sudo ddrescue -f -r3 /dev/disk2 /dev/disk1

However, I forgot to put a mapfile name. So, a few questions:

1. Where is the mapfile being written? Can I recover it?

2. Since mapfile is an essential argument to the command, could it be 
writing the mapfile on /dev/disk1?  Aarrgghh!!!

If the latter (and I hope not), could I suggest some more rigorous 
checking of arguments might be desirable. As it is, I have 
potentially wasted 15 hours of copying of a disk with lots of read 
errors. :-(

3. If I need to interrupt a ddrescue run, is it ok to CTRL/C it, then 
start running it again later, assuming there is actually a mapfile 
somewhere? (I have tradesmen coming today who may need to turn the 
power off.)

Thanks