Re: Time machine backups

On Wed, 8 Jan 2025 19:24:03 -0000 (UTC), Lars Poulsen
<lars@cleo.beagle-ears.com> wrote in
<slrnvntk6j.31j9q.lars@cleo.beagle-ears.com>:

On Wed, 08 Jan 2025 18:25:29 +0000, Rich wrote:

If you must use samba as the backing store, then use something like
Restic which stores the data in its own internal format and only
requires "basic file storage and basic filenames" support from the
underlying backing store.
 
Restic: https://restic.net/

 
On 2025-01-08, Lew Pitcher <lew.pitcher@digitalfreehold.ca> wrote:

Or tar(1), with or without compression.

 
I think restic has promise.
 
tar(1) does NOT allow me to have a complete backup for every snapshot
without wasting space on multiple copies of the majority of files tht
did not change.
 
I suppose one could use one large file on the samba server, mount it
through some tunnel that lets you see it as a block device; create an
ext4 file system on that block device, then use rsync to that file system
to create a backup with versioning. Could this be done with a loopback
mount?

I was going to suggest that, but also using LUKS to encrypt
the volume -- at least if you're storing it on some cloud provider.
"It should work." (More famous last words. ;)  )

(One downside is LUKS apparently won't allow a sparse file
being used for your loopback mount to remain sparse, since
it encrypts across the whole block device.)

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