Re: [gentoo-user] Re: Suggestions for backup scheme?

["J. Roeleveld" <joost@antarean.org>]

On Tuesday, February 6, 2024 6:29:09 PM CET Grant Edwards wrote:
> On 2024-02-06, J. Roeleveld <joost@antarean.org> wrote:
> > If you want to use snapshots, the filesystem will need to support it.
> > (either LVM or ZFS). If you only want to create snapshots on the
> > backupserver, I actually don't see much benefit over using rsync.
> 
> Upthread I've been told that ZFS snapshots
> 
>  1. Require far less disk space than rsync's snapshots.
>  2. Are far faster.
>  3. Are atomic.

True, but the speed is reduced by relying on rsync to copy data from your PC 
to the backupserver.

> > They are normally not visible though, you need to access them specifically
> > using "/filesystem/path/.zfs/snapshot"
> 
> Great, that's exactly what I would hope for. I'm reading up on ZFS,
> and from what I've gleaned so far, it seems lake ZFS source and ZFS
> backup certainly would be ideal.
> 
> It's almost like the ZFS filesystem designers had thought about "how
> to backup" from the start. Something that all of the old-school
> filesystem designers clearly hadn't. :)

I think it's also mainly there to quickly keep a backup server on standby for 
a quick switch over.

--
Joost