linux-kernel - RE: Regression in handling of unsafe UBI shutdown

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Message-ID: <F87D23B7E1F84E4AB52E4FA4A55F85DC026DADA5@tpamail.elutions.com>
Date:	Wed, 20 Jul 2011 07:45:04 -0400
From:	"Mike Hench" <mhench@...tions.com>
To:	"Daniel Mack" <zonque@...il.com>, <linux-mtd@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Cc:	"Adrian Hunter" <adrian.hunter@...ia.com>,
	"Sven Neumann" <s.neumann@...mfeld.com>,
	"Artem Bityutskiy" <dedekind1@...il.com>
Subject: RE: Regression in handling of unsafe UBI shutdown

> UBIFS: recovery needed
> Error reading superblock on volume 'ubi:RootFS'!
> UBIFS not mounted, use ubifs mount to mount volume first!
> Wrong Image Format for bootm command
> ERROR: can't get kernel image!

Be nice to know what error.
FWIW:
a) I do not see this. I have very limited experience with 3.0-rc7 though
so maybe I should not say anything :-)

b) sometimes UBIFS decides to do recovery in u-boot, sometimes not.
it seems to depend on the type of content in the journal.
Lots of deleted files seem to trigger u-boot to perform a recovery for
instance.
I was running out of memory In u-boot while replaying the journal
at one point with an older kernel. This produced the same top level
error.
I run 12 megs now, with a 2gigabyte flash. I think that is overkill.

Work with u-boot with the 'bad' flash.
There is debugging in there, but I forget how to turn it on.

Mike Hench

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