linux-kernel - Re: file system for solid state disks

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Message-ID: <46D70BE7.2020503@corky.net>
Date:	Thu, 30 Aug 2007 19:26:47 +0100
From:	Just Marc <marc@...ky.net>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: file system for solid state disks

One must consult the documentation of that device.   This wear leveling 
is low level and most devices do not export any information about it.  
Recent SSDs start to export some values through SMART that let you 
monitor the state.

Some companies think that hiding is better than exposing...


Jan Engelhardt wrote:
> On Aug 25 2007 09:41, Just Marc wrote:
>   
>> On SSDs which contain built in wear leveling, pretty much any file 
>> system can be used.  For SSDs that lack such low level housekeeping, 
>> use stuff like JFFS2.
>>     
>
> The question is, how can you find out whether it does automatic 
> wear-leveling? (Perhaps when a CF is advertised as "holds 10 years!"?)
>
>
> 	Jan
>   

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