linux-kernel - Re: SD/MMC cards: how crappy they are?

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Message-ID: <20081226214625.GA25153@atrey.karlin.mff.cuni.cz>
Date:	Fri, 26 Dec 2008 22:46:25 +0100
From:	Pavel Machek <pavel@...e.cz>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Theodore Tso <tytso@....edu>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: SD/MMC cards: how crappy they are?

> Pavel Machek wrote:
> >>>
> >> I have seen flash cards die permanently from having a partition table it
> >> didn't like written to it.  Yes, the microcontroller on the flash card
> >> tried to interpret the partition table, assumed to be MS-DOS style, and
> >> would crash.
> > 
> > Aha... that explains why I killed few flashcards by tar xzvf /dev/sdX files
> > ... hopefully thats fixed in the better/bigger cards now.
> > 
> 
> Also had a batch of cards which would silently "correct" the partition
> table for you to align the partitions to its flash erase blocks.

Can you mention the manufacturer/model? Silendt data corruption is a
nasty thing....
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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