Read only but write logs on raspi.

[new numa hey]

Hello.

I have created my raspi to be read only through several guides, which works perfectly fine.

However I'm having a problem to write logs into certain files. I tried logging data into the /var/log file but it doesn't seem to work unless I use the remount function.

These ones make the most sense to me.
http://raspberrypi.stackexchange.com/questions/5112/running-on-read-only-sd-card

http://blog.pi3g.com/2014/04/make-raspbian-system-read-only/

Does anyone know, if I can edit the fstab file to give me the option to write in the /var file? Also it doesn't have to just be in that file, it can be in any as long as writes.

Thank you.

 

[Phantom Shadow]

If you want any log files to persist across reboots you could add a separate rw partition for /var/log.

Alternatively you could just have a rw partition for /var/log/programthatneedslogfiles so only the log files you want are kept.

 

[BigglesPiP]

Firstly, why do you want it read only?

You may want to make a partition for /var that is rw, it does after all contain variable data, this will also make PID files work again..

 

[new numa hey]

I'm not sure why I didn't report back as solved, my bad.

I ended up logging the data on a USB stick instead. As RW obviously.

Thanks.