[Bug-ddrescue] Suggestion for ddrescue in _seriously hosed filesystem_ environment

[Nathan Neulinger]

If you are using ddrescue against a filesystem (to recover raw file contents) - there is a scenario where the current 
behavior doesn't handle things well - when the filesystem is hosed to the point of causing ddrescue to be killed with 
segfaults.

I'd like to see two (what I see as probably relatively simple) improvements to 
alleviate this:

	1. Implement a "--log-every-time" option - you could use "-e" it looks like. The function would be that it would record 
to the log file after every successful read, not just periodically. During normal use, this would be a killer in 
performance, but during a crashing scenario, it would help tremendously.

        2. When above option is used, ALSO write out (and flush) to the log 
file _before_ every block is attempted.

The purpose there would be so that if ddrescue is killed while in the middle of that block read, it records it as being 
tried so that it will skip it on next invocation.

-- Nathan

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Nathan Neulinger                       address@hidden
Neulinger Consulting                   (573) 612-1412