On Tue May 20, 2025 at 3:50 PM BST, Dan Purgert wrote:

I used /mnt/backup because I only wanted the partition mounted while
the backup was running (it was one of several on that physical drive).
The backup script did the mount/rsync/unmount as part of the
execution. Really, the only point of this was a "well, I can't
accidentally delete it if it's not mounted" train of thought.

I can sympathize with that. I use a similar approach, except using
systemd features. My backup jobs are systemd services, which depend upon backup.mount (⇒ /backup), which is configured with
StopWhenUnneeded=true. The filesystem is mounted only when a backup
service starts, and is unmounted when it stops.

I'd actually like to do this differently: I'd like /backup permanently mounted, but in a separate mount namespace from the main system. And I'd
like backup jobs to enter that namespace. I haven't managed to get
something like this working with systemd features.

--
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👱🏻 Jonathan Dowland
✎ jmtd@debian.org
🔗 https://jmtd.net

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