Archiving & Data Integrity
I just found a very neat tool: par2 . Given a large file or set of files, it will construct a set of verification files that the tool can use at a later date to verify the integrity of the file(s) at a later date, and if any of the data was corrupted it will repair the data (up to a certain user-settable redundancy level). It does this using the fancy Reed-Solomon encoding scheme.
I figured I'd use that in any long-term archival process.
However I'm wondering if the new BRTFS filesystem would do that sort of thing automatically. I'd probably like to use both.
Re: Archiving & Data Integrity
Yeah, par2 is pretty great. Especially when not all the files from a Usenet download are available, you can use the par files to reconstruct the missing files.