From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail5.wrs.com (mail5.windriver.com [192.103.53.11]) by mail.openembedded.org (Postfix) with ESMTP id B85F760722 for ; Thu, 31 Mar 2016 10:07:33 +0000 (UTC) Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail5.wrs.com (8.15.2/8.15.2) with ESMTPS id u2VA7X3I028291 (version=TLSv1 cipher=AES128-SHA bits=128 verify=OK) for ; Thu, 31 Mar 2016 03:07:33 -0700 Received: from [128.224.162.159] (128.224.162.159) by ALA-HCA.corp.ad.wrs.com (147.11.189.40) with Microsoft SMTP Server id 14.3.248.2; Thu, 31 Mar 2016 03:07:32 -0700 To: Bruce Ashfield From: Hongxu Jia Message-ID: <56FCF6E3.7090109@windriver.com> Date: Thu, 31 Mar 2016 18:07:31 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 Cc: "openembedded-core@lists.openembedded.org" Subject: aufs missing in kernel 4.4 X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Mar 2016 10:07:33 -0000 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Hi Bruce, In kernel 4.1, it supports aufs: http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-4.1/tree/fs/aufs?h=standard/base But it does not exist in kernel 4.4: http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-4.4/tree/fs?h=standard/base It caused ISO's rootfs is readonly. In meta/recipes-core/initrdscripts/files/init-live.sh: ----------------- 174 elif grep -q -w "aufs" /proc/filesystems; then 175 union_fs_type="aufs" [snip] 204 "aufs") 205 mkdir -p /rootfs.ro /rootfs.rw 206 if ! mount -n --move $ROOT_MOUNT /rootfs.ro; then 207 rm -rf /rootfs.ro /rootfs.rw 208 fatal "Could not move rootfs mount point" 209 else 210 mount -t tmpfs -o rw,noatime,mode=755 tmpfs /rootfs.rw 211 mount -t aufs -o "dirs=/rootfs.rw=rw:/rootfs.ro=ro" aufs $ROOT_MOUNT 212 mkdir -p $ROOT_MOUNT/rootfs.ro $ROOT_MOUNT/rootfs.rw 213 mount --move /rootfs.ro $ROOT_MOUNT/rootfs.ro 214 mount --move /rootfs.rw $ROOT_MOUNT/rootfs.rw 215 fi 216 ;; ----------------- Would you please update kernel 4.4 to support aufs? //Hongxu