Is it possible to achieve Raspberry Pi's overlayfs functionality on the LuckFox Pico Max?

[StevenAMC]

Hello,
I am exploring the LuckFox Pico Max and was wondering if it's possible to achieve a functionality similar to overlayfs as used on Raspberry Pi.

On Raspberry Pi, overlayfs allows the root filesystem to be mounted as read-only while changes are written to a temporary layer in RAM. This is very useful for protecting the SD card from unwanted writes.

Is there any documentation, guide, or support for implementing this on the LuckFox Pico Max? If not, are there alternative approaches to achieve a similar outcome?

Thanks in advance!

[luckfox-eng33]

Similar functions can be achieved by changing the file system of the corresponding partition to squashfs.
Overlayfs should also be able to achieve it, but we have not tested it yet.