linux-kernel - Re: ext2 on flash memory

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Message-ID: <Pine.LNX.4.64.0706110754280.12140@blackbox.fnordora.org>
Date:	Mon, 11 Jun 2007 07:58:59 -0700 (PDT)
From:	alan <alan@...eserver.org>
To:	DervishD <lkml@...vishd.net>
cc:	Linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: ext2 on flash memory

On Mon, 11 Jun 2007, DervishD wrote:

>    Hi all :)
>
>    I was wondering: is there any reason not to use ext2 on an USB
> pendrive? Really my question is not only about USB pendrives, but any
> device whose storage is flash based. Let's assume that the device has a
> good quality flash memory with wear leveling and the like...
>
>    Thanks a lot in advance :)

It depends...

Do you need to use OSes other than Linux?  FAT16/32 seems to be a pretty 
universal filesystem at this point.  You can mount ext2 on Windows, but it 
is a pain.  Not certain what it takes to mount it on OS X.

I have encountered flash drives that do not format well for anything other 
than FAT16, but they were old and small.  Hopefully that problem no longer 
exists with modern hardware.  I would format it then test the hell out of 
it before trusting it with important data.

-- 
"ANSI C says access to the padding fields of a struct is undefined.
ANSI C also says that struct assignment is a memcpy. Therefore struct
assignment in ANSI C is a violation of ANSI C..."
                                   - Alan Cox
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