Re: Homebuilt NAS Advice
On Tue, 4 Aug 2020 10:26:32 +0100
Jonathan Dowland <jon+debian-user@dow.land> wrote:
> On Tue, Aug 04, 2020 at 01:32:24AM -0700, David Christensen wrote:
> >jdupes looks interesting, and should work on any file system that
> >supports hard links. I expect BorgBackup either calls jdupes or
> >implements similar functionality:
> >
> >https://linuxcommandlibrary.com/man/jdupes.html
>
> I'm fairly sure Borg stores files by a hash of their contents and
> maintains a separate index of names→hashes for each generation.
Indeed:
"To actually perform the repository-wide deduplication, a hash of each
chunk is checked against the chunks cache, which is a hash-table of all
chunks that already exist."
https://borgbackup.readthedocs.io/en/stable/internals.html
Celejar
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