UBIFS failure & stable page writes

[Mats Kärrman]

Hi Anton,

1. Yes, there are files added, removed and renamed.
2. Single core, 32-bit PowerPC e300c4 in BE mode, CONFIG_PREEMPT=y.
3. Never tried a graceful one ;) Normal procedure is shutting down application + sync + power off to be as quick as possible. However, as other people are responsible for those units that experienced this problem I can't be sure that no-one used the shutdown command but it's unlikely.

BR // Mats
________________________________________
From: Prins Anton (ST-CO/ENG1.1) [Anton.Prins at nl.bosch.com]
Sent: Thursday, June 13, 2013 9:24 PM
To: Mats Kärrman; Adrian Hunter
Cc: linux-mtd at lists.infradead.org; dedekind1 at gmail.com
Subject: RE: UBIFS failure & stable page writes

Hi Mats,

Some questions to get more feeling with our problem:

1. Does your application add/remove files (delete/unlink?)
2. Does your kernel run on a single or multi-core machine?
3. Do you experience it with an ungraceful shutdown or also graceful?

The statistics we see is that rebooting every 5 minutes will not give higher occurrence.
It seems that device turned on for a longer time have more chance to fail; but as said not predictable.