uSD corruption (OT?)

Boudewijn wankelwankel at yahoo.com
Sun Dec 18 11:38:39 CET 2011


On Sunday 18 December 2011 09:39:10 Gilles Filippini wrote:
> Boudewijn a écrit , Le 17/12/2011 23:44:
> > You are probably familiar with/aware of linux-mtd at infradead.org. Part
> > of their FAQ made me suspect optimizations for FAT or parts of the spec
> > left out of the flash translation layer giving problems with anything
> > but FAT [1]: "(...) we suspect that vendors may user various tricks or
> > compromises to keep their devices "good enough" and cheap. For example,
> > it is known that some vendors optimize their FTL devices for FAT, and if
> > you start using ext3 on top of one, you might face some unexpected
> > problems (...)"
> > 
> > Not very constructive either :-( But a good read if you didn't after all
> > ;-)
> > 
> > Boudewijn
> > 
> > [1]
> 
> Missing link :)
Hmmm..  The "forgot attachment?"-plugin does not cover links ;-)

http://www.linux-mtd.infradead.org/doc/ubifs.html#L_raw_vs_ftl

> Here is another one [0]
> 
> _g.
> 
> [0] <https://lwn.net/Articles/428584/>
From the intro: "In contrast, the more common SD cards and USB flash drives 
are very sensitive to specific access patterns and can show very high 
latencies for writes unless they are used with the preformatted FAT32 file 
layout."

Thanks!

Boudewijn
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