linux-kernel - Re: Ext2/3 Filesystem Analysis

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Message-ID: <87wru84dgg.fsf@basil.nowhere.org>
Date:	Wed, 09 Jun 2010 14:06:55 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	"Yedire\, Sandeep" <syedire@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Ext2/3 Filesystem Analysis

Alan Cox <alan@...rguk.ukuu.org.uk> writes:

>> With Ext3:
>> Filesystem block at Sector 0 is being updated more frequently at ratio
>> of 5.5 to 6 times that of data block.
>> Filesystem block(super block copies) are being updated at around
>> 1.5times the frequency compared to data block.
>> 
>> Has anyone come across this kind of behaviour with these filesystems
>> on NAND Flash?
>
> ext2/3 are not intended to be used with flash - they do not wear level,

Or rather not intended to be used with flash that does not have
an own wear level layer.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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