From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 7779FE009E4; Fri, 17 Jul 2015 06:03:23 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider * (picmaster[at]mail.bg) * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [193.201.172.118 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's * domain * 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily * valid * -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Received: from mx2.mail.bg (mx2.mail.bg [193.201.172.118]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 2F1D7E009D7 for ; Fri, 17 Jul 2015 06:03:18 -0700 (PDT) Received: from [192.168.0.62] (unknown [93.152.143.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx2.mail.bg (Postfix) with ESMTPSA id B82F86001285; Fri, 17 Jul 2015 16:03:16 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mail.bg; s=default; t=1437138196; bh=ST7htCdvZHuJPOiYSclV98VlL0JUhQ+WIwStefzj4AA=; h=Message-ID:Date:From:MIME-Version:To:Subject:References: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=V4F+9fzkDq0JNWthJOBD5Rx736gLtFKNHTz83g2HNxLYhR/keaXddgAiA18D6lkqV UlMr99o1bjZ3jUCREdaddkHazoY6zsID/C4FyzypgNbofYsNtMvfHl2RhyrI6kcg+o uh7Jsqgow7GvlqcAAT9uz9IBQls79kUDW3NNrbWY= Message-ID: <55A8FD14.6040803@mail.bg> Date: Fri, 17 Jul 2015 16:03:16 +0300 From: Nikolay Dimitrov User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.7.0 MIME-Version: 1.0 To: Gary Thomas , Yocto Project References: <55A79757.8010704@mlbassoc.com> In-Reply-To: <55A79757.8010704@mlbassoc.com> Subject: Re: Read-only file system with persistent storage X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Jul 2015 13:03:23 -0000 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Hi Gary, On 07/16/2015 02:36 PM, Gary Thomas wrote: > I'd like to set up a system with a read-only root file system > along with some persistent read-write storage. What are the > [best] options in Poky/Yocto for this? Is there any support > for some type of overlay file system? > > Thanks for any ideas/pointers I remember that back in my automotive days, one of my teams had to use Genivi's persistence component: http://projects.genivi.org/persistence-management/ There are also git repositories over there. I can't comment on the code quality and stability, but this component is part of the Genivi reference platform (which technically doesn't mean anything), and there's at least 1 vehicle from a major OEM which uses this component on the roads. As usual, keep your eyes open for possible issues. Kind regards, Nikolay