From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F218C2D0DC for ; Thu, 2 Jan 2020 15:16:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22C88206E6 for ; Thu, 2 Jan 2020 15:16:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728634AbgABPQ0 convert rfc822-to-8bit (ORCPT ); Thu, 2 Jan 2020 10:16:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:41126 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728561AbgABPQ0 (ORCPT ); Thu, 2 Jan 2020 10:16:26 -0500 From: bugzilla-daemon@bugzilla.kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 206061] Poor NVME SSD support, EXT4 re-mounted Date: Thu, 02 Jan 2020 15:16:25 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: low X-Bugzilla-Who: tytso@mit.edu X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=206061 Theodore Tso (tytso@mit.edu) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tytso@mit.edu --- Comment #1 from Theodore Tso (tytso@mit.edu) --- These kernel messages (modulo the timestamps) are normal. The root file system is mounted read-only, and after the file system is checked, the file system is mounted read-write. What is not supposed to be happening is the file system getting checked after every boot. I would need to look at the fsck logs to be sure, but the most likely cause is that your motherboard's real time clock is not correctly set, or the battery for the real time clock is dead. Normally, when the kernel is booted, it sets the system clock from the motherboard's real-time clock, and then the file system is mounted, it is checked, and then it is remounted read-write. After that, the network is set up, and the time gets set from an internet time server. The motherboard's real time clock should be set after the time is set from the internet time server (to correct it from clock drift), and most init scripts will also set the hardware clock from the system clock at shutdown. And then the real-time clock will be maintained even while the power is off using the battery on the motherboard. (It's normally a watch battery, such as a CR2032.) To work around something going wrong with the above, please try adding to /etc/e2fsck.conf --- or creating /etc/e2fsck.conf if it does not exist --- the following lines [options] broken_system_clock = true More information about this can be found in the e2fsck.conf man page. -- You are receiving this mail because: You are watching the assignee of the bug.