Re: [Lzip-bug] New feature for lziprecover fec files

[Bug reports for lzip, lossless file compressor]

Hello Phako,
It is possible, but it would be complicated, would require changing the 
fec file format, and would give worse results. (The FEC blocks for a 
member can't be used to repair other members. More FEC blocks are 
required to achieve the same level of protection).

It would still give a better result that fec files for the same data not 
archived.  And that caveats can be explained in the manual.

Because of the above, I would prefer not to implement multimember FEC 
unless whole-file FEC proves itself inadequate beyond repair for some use.

I probably don't get all the implication of what these feature would 
imply, but as it is today, fec files are useless in practice for large 
files.  It takes 20 times more times to create 2% of recovery files than 
it takes to make another copies of the archive and you need an 
unreasonable amount of RAM when individual files are big.


Regards.