[systemd-devel] making persistent tmpfs folders with systemd

Lennart Poettering lennart at poettering.net
Tue Nov 17 05:34:18 PST 2015

On Mon, 16.11.15 18:50, bobafetthotmail (starshipeleven at hotmail.it) wrote:

> I have a script that allows me to |mount| a folder to |tmpfs|, while
> bind-mounting the same folder to another location, so I can sync the
> contents (on startup, shutdown, and when needed) between the |tmpfs| and the
> original folder on system drive.
> I use it for folders that see many writes, but whose data should be
> preserved after a reboot.
> Mostly to use a USB flash drive or SD card as system drive, while running
> programs that aggressively write round-robin databases or similar
> small-size-high-write files.
> Sooo..... I was wondering if systemd allows me to do something like that
> natively.
> I did look at the tmpfs modules of systemd, but from what I understood it
> does deal with making non-persistent tmpfs on the fly, clean temporary files
> from a folder and so on.
> Is there a persistency option I did miss perhaps?

No, there is not. And I don't really see this a strong enough usecase
to make it something native.



Lennart Poettering, Red Hat

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