JFFS2 losing files on mount

Ricard Wanderlof ricard.wanderlof at axis.com
Wed Jan 21 10:05:49 EST 2009

On Wed, 21 Jan 2009, Marco Braga wrote:

> I am doing some power failure tests on an ARM7 based device using
> JFFS2 on NAND flash and I am a bit disappointed by the early results.
> ...
> I'd like to hear your experiences. What do you think?

We use JFFS2 on both an ARM9-platform and on our own CRIS platform. We 
never unmount the device in preparation for power down; when someone pulls 
the plug, the system just dies. While we do occasionally see warning 
messages about incomplete nodes during the next boot-up, we have never 
experienced anything as severe as you mention, and we have not lost any 
files on the JFFS2 filesystem either.

Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30

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