From patchwork Wed Feb 28 15:57:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Filipe Manana X-Patchwork-Id: 10248719 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E31BD60211 for ; Wed, 28 Feb 2018 16:54:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D401C28695 for ; Wed, 28 Feb 2018 16:54:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C8D3628D41; Wed, 28 Feb 2018 16:54:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 61D9428695 for ; Wed, 28 Feb 2018 16:54:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934169AbeB1P5l (ORCPT ); Wed, 28 Feb 2018 10:57:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:57590 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934166AbeB1P5j (ORCPT ); Wed, 28 Feb 2018 10:57:39 -0500 Received: from debian3.lan (bl12-226-64.dsl.telepac.pt [85.245.226.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1E03E21748; Wed, 28 Feb 2018 15:57:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E03E21748 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=fdmanana@kernel.org From: fdmanana@kernel.org To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, Filipe Manana Subject: [PATCH] generic: add test for fsync after renaming and linking special file Date: Wed, 28 Feb 2018 15:57:34 +0000 Message-Id: <20180228155734.5899-1-fdmanana@kernel.org> X-Mailer: git-send-email 2.11.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Filipe Manana Test that when a fsync journal/log exists, if we rename a special file (fifo, symbolic link or device), create a hard link for it with its old name and then commit the journal/log, if a power loss happens the filesystem will not fail to replay the journal/log when it is mounted the next time. This test is motivated by a bug found in btrfs, which is fixed by the following patch for the linux kernel: "Btrfs: fix log replay failure after linking special file and fsync" Signed-off-by: Filipe Manana --- tests/generic/479 | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/479.out | 2 + tests/generic/group | 1 + 3 files changed, 115 insertions(+) create mode 100644 tests/generic/479 create mode 100644 tests/generic/479.out diff --git a/tests/generic/479 b/tests/generic/479 new file mode 100644 index 00000000..7e4ba7d0 --- /dev/null +++ b/tests/generic/479 @@ -0,0 +1,112 @@ +#! /bin/bash +# FSQA Test No. 479 +# +# Test that when a fsync journal/log exists, if we rename a special file (fifo, +# symbolic link or device), create a hard link for it with its old name and then +# commit the journal/log, if a power loss happens the filesystem will not fail +# to replay the journal/log when it is mounted the next time. +# +#----------------------------------------------------------------------- +# +# Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved. +# Author: Filipe Manana +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- +# + +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + _cleanup_flakey + cd / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/dmflakey + +# real QA test starts here +_supported_fs generic +_supported_os Linux +_require_scratch +_require_dm_target flakey + +rm -f $seqres.full + +run_test() +{ + local file_type=$1 + + _scratch_mkfs >>$seqres.full 2>&1 + _require_metadata_journaling $SCRATCH_DEV + _init_flakey + _mount_flakey + + mkdir $SCRATCH_MNT/testdir + case $file_type in + symlink) + ln -s xxx $SCRATCH_MNT/testdir/foo + ;; + fifo) + mkfifo $SCRATCH_MNT/testdir/foo + ;; + dev) + mknod $SCRATCH_MNT/testdir/foo c 0 0 + ;; + *) + _fail "Invalid file type argument: $file_type" + esac + # Make sure everything done so far is durably persisted. + sync + + # Create a file and fsync it just to create a journal/log. This file + # must be in the same directory as our special file "foo". + touch $SCRATCH_MNT/testdir/f1 + $XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir/f1 + + # Rename our special file and then create link that has its old name. + mv $SCRATCH_MNT/testdir/foo $SCRATCH_MNT/testdir/bar + ln $SCRATCH_MNT/testdir/bar $SCRATCH_MNT/testdir/foo + + # Create a second file and fsync it. This is just to durably persist the + # fsync journal/log which is typically modified by the previous rename + # and link operations. This file does not need to be placed in the same + # directory as our special file. + touch $SCRATCH_MNT/f2 + $XFS_IO_PROG -c "fsync" $SCRATCH_MNT/f2 + + # Simulate a power failure and mount the filesystem to check that + # replaying the fsync log/journal succeeds, that is the mount operation + # does not fail. + _flakey_drop_and_remount + _unmount_flakey + _cleanup_flakey +} + +run_test symlink +run_test fifo +run_test dev + +echo "Silence is golden" +status=0 +exit diff --git a/tests/generic/479.out b/tests/generic/479.out new file mode 100644 index 00000000..290f18b3 --- /dev/null +++ b/tests/generic/479.out @@ -0,0 +1,2 @@ +QA output created by 479 +Silence is golden diff --git a/tests/generic/group b/tests/generic/group index 1e808865..3b9b47e3 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -481,3 +481,4 @@ 476 auto rw 477 auto quick exportfs 478 auto quick +479 auto quick metadata