Re: [Duplicity-talk] par2 - what and when to use?

[edgar . soldin]

On 26.01.2020 23:49, Mark Grandi via Duplicity-talk wrote:
> Its parity information so in case a couple bits get flipped in the backup 
> files,
> the parity information can be used to restore the data
>
> See https://en.wikipedia.org/wiki/Parchive
>
> It should work on the ‘final’ output of the backup, so I feel like it should
> work if the backup isn’t encrypted and its just a .tar.gz file, but I have not
> tried it

well, no. it works as a backend wrapping other backends meaning it generates 
par2 files for _all files_ to be put on a backend regardless of their 
encryption/compression. it simply does and on a read it checks and if necessary 
repairs.

..ede/duply.net

> ~Mark
>
> *From: *MRob via Duplicity-talk <mailto:address@hidden>
> *Sent: *Sunday, January 26, 2020 2:46 PM
> *To: *address@hidden <mailto:address@hidden>
> *Cc: *MRob <mailto:address@hidden>
> *Subject: *[Duplicity-talk] par2 - what and when to use?
>
> Is par2 like a tar format with extra bits added to facilitate recovering
>
> corrupt files? Is protection against files corrupt inside the archive or
>
> corrupt archive file itself? Is there a easy to understands overview?
>
> I see to use it like "par2+gs://bucket" but I want to do some local
>
> backups that will use --no-encryption option and transport over sftp. Is
>
> still a good idea to do like "par2+sftp://address@hidden/path";?
>
> If par2 is very powerful ability to protect against corruption, why
>
> isn't it promoted more regular on duplicity website, manpage, mailing
>
> list? Shouldn't it be in more of the examples?
>
> _______________________________________________
>
> Duplicity-talk mailing list
>
> address@hidden
>
> https://lists.nongnu.org/mailman/listinfo/duplicity-talk
>
>
> _______________________________________________
> Duplicity-talk mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/duplicity-talk
>