From patchwork Wed Sep 1 00:11:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 12467961 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=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 7B9F9C4320A for ; Wed, 1 Sep 2021 00:12:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6408E6102A for ; Wed, 1 Sep 2021 00:12:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242998AbhIAAMz (ORCPT ); Tue, 31 Aug 2021 20:12:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:46812 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243026AbhIAAMv (ORCPT ); Tue, 31 Aug 2021 20:12:51 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E354C61008; Wed, 1 Sep 2021 00:11:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1630455116; bh=sC6PTG4ek4/QRwPorslrPDk9HBxUXKLbjFN0/62aMVE=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=V1STgHB/6+ltVtgf8YSZHdVZzLn1DxjroTVus7UeF5SPvxn3F0+ACJ6E6zsBj13Im 1QOGbOFYIS6CS/LhjFmL+zHBcAl2Xw6mSpTWrPD/1mE4w6U51sjWuiqvOSqUHXVl6z W6K2Z7YXHwdvaeYx0xfF38iBGCEWMmfBs/oumu9lAND+xTd5EEEaao/QW/ygScmeVP 2XO+LeWfmnDW0l+QKZ438PfMeoDXykPI2+z0Nto1h6T7ZuIe2J7NIp9Wxtpdafrzis cw8j58SmwH3Q2HY/0TyMeZcTG6nfbKpSqI1Ulqad9BKbKV+EdNa6AVmfYLOgctB+tc nVQCpA5qq56MQ== Subject: [PATCH 2/3] generic: test shutdowns of a nested filesystem From: "Darrick J. Wong" To: djwong@kernel.org, guaneryu@gmail.com Cc: linux-xfs@vger.kernel.org, fstests@vger.kernel.org, guan@eryu.me Date: Tue, 31 Aug 2021 17:11:55 -0700 Message-ID: <163045511565.770026.4042733663837802604.stgit@magnolia> In-Reply-To: <163045510470.770026.14067376159951420121.stgit@magnolia> References: <163045510470.770026.14067376159951420121.stgit@magnolia> User-Agent: StGit/0.19 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Darrick J. Wong generic/475, but we're running fsstress on a disk image inside the scratch filesystem Signed-off-by: Darrick J. Wong --- common/rc | 24 +++++++++ tests/generic/725 | 136 +++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/725.out | 2 + 3 files changed, 162 insertions(+) create mode 100755 tests/generic/725 create mode 100644 tests/generic/725.out diff --git a/common/rc b/common/rc index 46b6b220..05c87332 100644 --- a/common/rc +++ b/common/rc @@ -631,6 +631,30 @@ _ext4_metadump() $DUMP_COMPRESSOR -f "$dumpfile" &>> "$seqres.full" } +# Capture the metadata of a filesystem in a dump file for offline analysis. +# This is not supported by all filesystem types, so this function should only +# be used after a test has already failed. +_metadump_dev() { + local device="$1" + local dumpfile="$2" + local compressopt="$3" + + test "$DUMP_CORRUPT_FS" = 1 || return 0 + + case "$FSTYP" in + ext*) + _ext4_metadump $device $dumpfile $compressopt + ;; + xfs) + _xfs_metadump $dumpfile $device none $compressopt + ;; + *) + echo "Don't know how to metadump $FSTYP" + return 1 + ;; + esac +} + _test_mkfs() { case $FSTYP in diff --git a/tests/generic/725 b/tests/generic/725 new file mode 100755 index 00000000..ac008fdb --- /dev/null +++ b/tests/generic/725 @@ -0,0 +1,136 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2021 Oracle, Inc. All Rights Reserved. +# +# FS QA Test No. 725 +# +# Test nested log recovery with repeated (simulated) disk failures. We kick +# off fsstress on a loopback filesystem mounted on the scratch fs, then switch +# out the underlying scratch device with dm-error to see what happens when the +# disk goes down. Having taken down both fses in this manner, remount them and +# repeat. This test simulates VM hosts crashing to try to shake out CoW bugs +# in writeback on the host that cause VM guests to fail to recover. +# +. ./common/preamble +_begin_fstest shutdown auto log metadata eio recoveryloop + +_cleanup() +{ + cd / + $KILLALL_PROG -9 fsstress > /dev/null 2>&1 + wait + if [ -n "$loopmnt" ]; then + $UMOUNT_PROG $loopmnt 2>/dev/null + rm -r -f $loopmnt + fi + rm -f $tmp.* + _dmerror_unmount + _dmerror_cleanup +} + +# Import common functions. +. ./common/dmerror +. ./common/reflink + +# Modify as appropriate. +_supported_fs generic + +_require_scratch_reflink +_require_cp_reflink +_require_dm_target error +_require_command "$KILLALL_PROG" "killall" + +echo "Silence is golden." + +_scratch_mkfs >> $seqres.full 2>&1 +_require_metadata_journaling $SCRATCH_DEV +_dmerror_init +_dmerror_mount + +# Create a fs image consuming 1/3 of the scratch fs +scratch_freesp_bytes=$(_get_available_space $SCRATCH_MNT) +loopimg_bytes=$((scratch_freesp_bytes / 3)) + +loopimg=$SCRATCH_MNT/testfs +truncate -s $loopimg_bytes $loopimg +_mkfs_dev $loopimg + +loopmnt=$tmp.mount +mkdir -p $loopmnt + +scratch_aliveflag=$tmp.runsnap +snap_aliveflag=$tmp.snapping + +snap_loop_fs() { + touch "$snap_aliveflag" + while [ -e "$scratch_aliveflag" ]; do + rm -f $loopimg.a + _cp_reflink $loopimg $loopimg.a + sleep 1 + done + rm -f "$snap_aliveflag" +} + +fsstress=($FSSTRESS_PROG $FSSTRESS_AVOID -d "$loopmnt" -n 999999 -p "$((LOAD_FACTOR * 4))") + +for i in $(seq 1 $((25 * TIME_FACTOR)) ); do + touch $scratch_aliveflag + snap_loop_fs >> $seqres.full 2>&1 & + + if ! _mount $loopimg $loopmnt -o loop; then + rm -f $scratch_aliveflag + _metadump_dev $loopimg $seqres.loop.$i.md + _fail "iteration $i loopimg mount failed" + break + fi + + ("${fsstress[@]}" >> $seqres.full &) > /dev/null 2>&1 + + # purposely include 0 second sleeps to test shutdown immediately after + # recovery + sleep $((RANDOM % (3 * TIME_FACTOR) )) + rm -f $scratch_aliveflag + + # This test aims to simulate sudden disk failure, which means that we + # do not want to quiesce the filesystem or otherwise give it a chance + # to flush its logs. Therefore we want to call dmsetup with the + # --nolockfs parameter; to make this happen we must call the load + # error table helper *without* 'lockfs'. + _dmerror_load_error_table + + ps -e | grep fsstress > /dev/null 2>&1 + while [ $? -eq 0 ]; do + $KILLALL_PROG -9 fsstress > /dev/null 2>&1 + wait > /dev/null 2>&1 + ps -e | grep fsstress > /dev/null 2>&1 + done + for ((i = 0; i < 10; i++)); do + test -e "$snap_aliveflag" || break + sleep 1 + done + + # Mount again to replay log after loading working table, so we have a + # consistent fs after test. + $UMOUNT_PROG $loopmnt + _dmerror_unmount || _fail "iteration $i scratch unmount failed" + _dmerror_load_working_table + if ! _dmerror_mount; then + _metadump_dev $DMERROR_DEV $seqres.scratch.$i.md + _fail "iteration $i scratch mount failed" + fi +done + +# Make sure the fs image file is ok +if [ -f "$loopimg" ]; then + if _mount $loopimg $loopmnt -o loop; then + $UMOUNT_PROG $loopmnt &> /dev/null + else + _metadump_dev $DMERROR_DEV $seqres.scratch.final.md + echo "final scratch mount failed" + fi + SCRATCH_RTDEV= SCRATCH_LOGDEV= _check_scratch_fs $loopimg +fi + +# success, all done; let the test harness check the scratch fs +status=0 +exit diff --git a/tests/generic/725.out b/tests/generic/725.out new file mode 100644 index 00000000..ed73a9fc --- /dev/null +++ b/tests/generic/725.out @@ -0,0 +1,2 @@ +QA output created by 725 +Silence is golden.