Re: deduplicating file systems: VDO with Debian?
On Mon, 2022-11-07 at 09:14 +0100, Anders Andersson wrote:
> On Mon, Nov 7, 2022 at 3:04 AM hw <hw@adminart.net> wrote:
>
> > Hi,
> >
> > I discovered that Redhat has VDO[1] to take care of deduplicating file
> > systems.
> > Aptitude didn't find any packages towards that.
> >
> > Is there no VDO in Debian, and what would be good to use for deduplication
> > with
> > Debian? Why isn't VDO in the stardard kernel? Or is it?
> >
> > I'm not looking for deduplication that happens some time after files have
> > already been written like btrfs would allow: There is no point in
> > deduplicating
> > backups after they're done because I don't need to save disk space for
> > them when
> > I can fit them in the first place.
> >
> >
> > [1]:
> >
> > https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/deduplicating_and_compressing_storage/deploying-vdo_deduplicating-and-compressing-storage#doc-wrapper
> >
> >
> You could always buy Red Hat Enterprise Linux license, sign up for a
> support contract, and ask if they could start supporting other operating
> systems? ("Each branch on this project is intended to work with a specific
> release of Enterprise Linux").
Huh? What would that accomplish?
> I would be more worried if my backup storage didn't have enough room for at
> least a full fresh and unique backup from one client.
> - If it doesn't and something unexpected happens (user fills the whole
> disk with something, malware encrypts all data = changes everything to
> unique files, etc) then it will fill up the disk and ruin every other
> backup.
> - If you *do* have room for one client but not many more, you can always
> deduplicate after each client backup which should regain everything if
> nothing changed.
None of this applies in this case. Are you saying that deduplication is not
possible with Debian?
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