Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761965AbXH3Sc7 (ORCPT ); Thu, 30 Aug 2007 14:32:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761385AbXH3Sci (ORCPT ); Thu, 30 Aug 2007 14:32:38 -0400 Received: from corky.net ([212.150.53.130]:38817 "EHLO zebday.corky.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1761010AbXH3ScX (ORCPT ); Thu, 30 Aug 2007 14:32:23 -0400 Message-ID: <46D70BE7.2020503@corky.net> Date: Thu, 30 Aug 2007 19:26:47 +0100 From: Just Marc User-Agent: Mozilla-Thunderbird 2.0.0.4 (X11/20070828) MIME-Version: 1.0 To: Jan Engelhardt CC: linux-kernel@vger.kernel.org Subject: Re: file system for solid state disks References: <46CFEB36.9020806@corky.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-AV-Checked: ClamAV using ClamSMTP on CorKy.NeT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 943 Lines: 28 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 > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/