From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id E4015E00849; Tue, 28 Oct 2014 22:00:10 -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=-4.2 required=5.0 tests=BAYES_00,HTML_MESSAGE, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, * medium trust * [147.11.1.11 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 HTML_MESSAGE BODY: HTML included in message Received: from mail.windriver.com (mail.windriver.com [147.11.1.11]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id BFF1DE0082F for ; Tue, 28 Oct 2014 22:00:04 -0700 (PDT) Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail.windriver.com (8.14.9/8.14.5) with ESMTP id s9T502GH012045 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Tue, 28 Oct 2014 22:00:03 -0700 (PDT) Received: from [128.224.162.187] (128.224.162.187) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server (TLS) id 14.3.174.1; Tue, 28 Oct 2014 22:00:02 -0700 Message-ID: <545074B1.1000904@windriver.com> Date: Wed, 29 Oct 2014 13:01:37 +0800 From: ChenQi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 MIME-Version: 1.0 To: References: In-Reply-To: X-Originating-IP: [128.224.162.187] Subject: Re: Read-only rootfs, excluding /tmp and /var/logs 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: Wed, 29 Oct 2014 05:00:11 -0000 Content-Type: multipart/alternative; boundary="------------090500050206030502000709" --------------090500050206030502000709 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit On 10/28/2014 09:47 PM, Andrew Wozniak wrote: > Greetings, > > I'm fairly new to the Yocto environment but have worked with lower > level Linux build systems. To get started, my target needs to have a > read-only rootfs, while excluding specific directories like /tmp and > /var/logs... > > The Project Dev Manual 5.15 section mentions the configuration of a > read-only filesystem. I haven't tried this method yet and was > wondering if there are any options for custom exclusions other than > the /tmp and /var/run mentioned in the docs. > > I think you are using a sysvinit based system, right? With the current project, you can follow the two steps below o make things work: 1. Modify meta/recipes-core/initscripts/initscripts-1.0/volatiles file, remove the corresponding entries for /tmp and /var/log. You can do this via a bbappend file in your own layer, or you could just modified the installed file (/etc/default/volatiles/00_core). 2. Edit your /etc/fstab, add corresponding entries. I think this is an area we should do better in Yocto. Best Regards, Chen Qi --------------090500050206030502000709 Content-Type: text/html; charset="windows-1252" Content-Transfer-Encoding: 7bit

On 10/28/2014 09:47 PM, Andrew Wozniak wrote:

Greetings,

I'm fairly new to the Yocto environment but have worked with lower level Linux build systems. To get started, my target needs to have a read-only rootfs, while excluding specific directories like /tmp and /var/logs...

The Project Dev Manual 5.15 section mentions the configuration of a read-only filesystem. I haven't tried this method yet and was wondering if there are any options for custom exclusions other than the /tmp and /var/run mentioned in the docs.

I think you are using a sysvinit based system, right?

With the current project, you can follow the two steps below o make things work:
1. Modify meta/recipes-core/initscripts/initscripts-1.0/volatiles file, remove the corresponding entries for /tmp and /var/log.
You can do this via a bbappend file in your own layer, or you could just modified the installed file (/etc/default/volatiles/00_core).

2. Edit your /etc/fstab, add corresponding entries.

I think this is an area we should do better in Yocto.

Best Regards,
Chen Qi

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