From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.wl.linuxfoundation.org ([198.145.29.98]:48372 "EHLO mail.wl.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725798AbeLCDIU (ORCPT ); Sun, 2 Dec 2018 22:08:20 -0500 Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C4AE2A95F for ; Mon, 3 Dec 2018 03:08:15 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 201685] ext4 file system corruption Date: Mon, 03 Dec 2018 03:08:14 +0000 Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-ext4-owner@vger.kernel.org List-ID: https://bugzilla.kernel.org/show_bug.cgi?id=201685 --- Comment #184 from Lei Ming (tom.leiming@gmail.com) --- The commit 2a5cf35cd6c56b2924("block: fix single range discard merge") in linus tree may address one possible data loss, anyone who saw corruption in scsi may try this fix and see if it makes a difference. Given the merged discard request isn't removed from elevator queue, it might be possible to be submitted to hardware again.(In reply to Theodore Tso from comment #174) > One of the reasons why this is bug hunt is so confounding. While I was > looking at older reports to try to see if I could find common factors, I > found Jimmy's dmesg report in #50, and this one looks different from many of > the others that people have reported. In this one, the EXT4 errors are > preceeded by a USB disconnect followed by disk-level errors. > > This is why it's important that we try very hard to filter out false > positives and false negative reports. We have multiple reports which both > strongly indicate that it's an ext4 bug, and others which strongly indicate > it is a bug below the file system layer. And then we have ones like this > which look like a USB disconnect.... > > [52967.931390] usb 4-1: reset SuperSpeed Gen 1 USB device number 2 using > xhci_hcd IMO it should be a usb device reset instead of disconnect, and reset is often triggered in SCSI EH. Thanks, -- You are receiving this mail because: You are watching the assignee of the bug.