zfs q regarding backup strategy
Julien Cigar
julien at perdition.city
Fri Oct 1 14:21:06 UTC 2021
On Fri, Oct 01, 2021 at 03:14:08PM +0100, tech-lists wrote:
> Hello,
>
> On Thu, Sep 30, 2021 at 08:06:28PM -0700, David Christensen wrote:
>
> > Michael Warren Lucas is my go-to author for FreeBSD and ZFS:
>
> I think those were written quite a while ago? I need something covering
> both the old zfs and OpenZFS. I'm looking for the differences, any
> incompatibilities that might apply in my context. It'd be great if he
> has more recent stuff.
>
> > I use zfs-auto-snapshot for snapshot creation/ management, and homebrew
> > commands/ scripts for replication. The homebrew stuff is problematic.
>
> yeah homebrew I'm trying to avoid for lots of reasons.
>
> > I need to evaluate something like zfs-replicate (available as a FreeBSD
> > package of the same name):
>
> Thanks for the suggestion. Problem with zfs-replicate is its dependence
> on python, which from what I've observed historically, is a bit of a mess.
> On my desktop there's lots of ports still needed that are dependent on
> python2 even though upstream have retired it. They show up in
> reports as EoL'd due to python2; there's loads right now and the desktop
> builds its ports in poudriere weekly.
>
> What I'm looking for is something (ideally) written in sh. Or even perl.
> But even before that, need to understand incremental backups properly.
> Basically the backup needs to be (effectively) write-only. By that, I
> mean only added to.
>
> Maybe zfs snapshots aren't the way to go; maybe rsync in the backup
> direction only (apart from when something needs to be restored) would
> suit my context better. What do you think?
We use zrepl at work and it works pretty well. It handles snapshots,
send/recv, pruning, etc.
> --
> J.
--
Julien Cigar
Belgian Biodiversity Platform (http://www.biodiversity.be)
PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0
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