From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:56628 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752654AbeCFERM (ORCPT ); Mon, 5 Mar 2018 23:17:12 -0500 To: linux-ext4@vger.kernel.org, Linux FS Devel From: Randy Dunlap Subject: ext4 confusion Message-ID: <9fcee669-1ab3-7beb-a9e8-77fd22dc71c9@infradead.org> Date: Mon, 5 Mar 2018 20:17:10 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Hi, With the following kernel config entries on Linux 4.16-rc3: CONFIG_EXT2_FS=m # CONFIG_EXT2_FS_XATTR is not set CONFIG_EXT3_FS=m # CONFIG_EXT3_FS_POSIX_ACL is not set # CONFIG_EXT3_FS_SECURITY is not set CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y # CONFIG_EXT4_ENCRYPTION is not set # CONFIG_EXT4_DEBUG is not set CONFIG_JBD2=y # CONFIG_JBD2_DEBUG is not set ext4_fill_super() tells me: [ 3.033174] EXT4-fs (sda5): couldn't mount as ext3 due to feature incompatibilities [ 3.100186] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null) [ 3.102683] VFS: Mounted root (ext4 filesystem) readonly on device 8:5. This is a new install, new filesystem. It has never been ext2 or ext3. After bootup and before I do anything else, I can remount /dev/sda5 on / as rw and everything is OK. What am I doing wrong? thanks, -- ~Randy