[Duplicity-talk] Feature suggestion: Forward error correction

[Peter Schuller]

Hello,

I am just going to go ahead and suggest the feature, since I have to admit I 
probably will not get to it myself even though I would like to.

I am continuously paranoid about random bitflips and other forms of 
corruption. Especially when the effect of a single bitflip can have a large 
impact (consider e.g., backup up rdiff-backup directories with duplicity; a 
bitflip in the wrong place and the whole archive is suddenly unusable by 
rdiff-backup).

It would be nice to apply some forward error correction to the backups. This 
seems like something very practical too given that duplicity already backs up 
in terms of volumes of sufficient size to make the use of existing tools such 
as par2 usable.

In the case of par2, duplicity could use par2 and upload the par2 files along 
with each volume and support using it during extraction in the event of 
broken volumes (and perhaps checking during a verification).

-- 
/ Peter Schuller

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