From patchwork Tue Jul 26 06:29:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 12928732 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6474C43334 for ; Tue, 26 Jul 2022 06:30:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231129AbiGZGaM (ORCPT ); Tue, 26 Jul 2022 02:30:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48518 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237799AbiGZGaK (ORCPT ); Tue, 26 Jul 2022 02:30:10 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ADC8CB04; Mon, 25 Jul 2022 23:30:08 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 3B5C61F9F4; Tue, 26 Jul 2022 06:30:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1658817007; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=wyIFENh/lgbdz46LqgCNfOwRjvgNTYiO+Y785v9zlwM=; b=JrQ2Y6N41dn9E0jKIsqGB3qZexvd/e0Xz5ERgYjkeKmjuBoKtOfQIBu3EeaPFfQT8GhZFx f9APnTUCNFoI8m12C1zHe1qhmGxAVJEF/d1eKgBj/lL7OdFMw16deIvHZx3f4S1xSeSTR5 Q7P0YdDcV7zgvDapH0/emdGuOvz2jeQ= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 5D4A813A7C; Tue, 26 Jul 2022 06:30:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id FgZjCu6J32LOUQAAMHmgww (envelope-from ); Tue, 26 Jul 2022 06:30:06 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org, fstests@vger.kernel.org Subject: [PATCH] fstests: add test case to make sure btrfs can handle one corrupted device Date: Tue, 26 Jul 2022 14:29:48 +0800 Message-Id: <20220726062948.56315-1-wqu@suse.com> X-Mailer: git-send-email 2.37.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org The new test case will verify that btrfs can handle one corrupted device without affecting the consistency of the filesystem. Unlike a missing device, one corrupted device can return garbage to the fs, thus btrfs has to utilize its data/metadata checksum to verify which data is correct. The test case will: - Create a small fs Mostly to speedup the test - Fill the fs with a regular file - Use fsstress to create some contents - Save the fssum for later verification - Corrupt one device with garbage but keep the primary superblock untouched - Run fssum verification - Run scrub to fix the fs - Run scrub again to make sure the fs is fine Signed-off-by: Qu Wenruo Reviewed-by: Boris Burkov --- tests/btrfs/261 | 94 +++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/261.out | 2 + 2 files changed, 96 insertions(+) create mode 100755 tests/btrfs/261 create mode 100644 tests/btrfs/261.out diff --git a/tests/btrfs/261 b/tests/btrfs/261 new file mode 100755 index 00000000..15218e28 --- /dev/null +++ b/tests/btrfs/261 @@ -0,0 +1,94 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2022 SUSE Linux Products GmbH. All Rights Reserved. +# +# FS QA Test 261 +# +# Make sure btrfs raid profiles can handling one corrupted device +# without affecting the consistency of the fs. +# +. ./common/preamble +_begin_fstest raid + +. ./common/filter +. ./common/populate + +_supported_fs btrfs +_require_scratch_dev_pool 4 +_require_fssum + +prepare_fs() +{ + local profile=$1 + + # We don't want too large fs which can take too long to populate + # And the extra redirection of stderr is to avoid the RAID56 warning + # message to polluate the golden output + _scratch_pool_mkfs -m $profile -d $profile -b 1G >> $seqres.full 2>&1 + if [ $? -ne 0 ]; then + echo "mkfs $mkfs_opts failed" + return + fi + + # Disable compression, as compressed read repair is known to have problems + _scratch_mount -o compress=no + + # Fill some part of the fs first + $XFS_IO_PROG -f -c "pwrite -S 0xfe 0 400M" $SCRATCH_MNT/garbage > /dev/null 2>&1 + + # Then use fsstress to generate some extra contents. + # Disable setattr related operations, as it may set NODATACOW which will + # not allow us to use btrfs checksum to verify the content. + $FSSTRESS_PROG -f setattr=0 -d $SCRATCH_MNT -w -n 3000 > /dev/null 2>&1 + sync + + # Save the fssum of this fs + $FSSUM_PROG -A -f -w $tmp.saved_fssum $SCRATCH_MNT + $BTRFS_UTIL_PROG fi show $SCRATCH_MNT >> $seqres.full + _scratch_unmount +} + +workload() +{ + local target=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $1}') + local profile=$1 + local num_devs=$2 + + _scratch_dev_pool_get $num_devs + echo "=== Testing profile $profile ===" >> $seqres.full + rm -f -- $tmp.saved_fssum + prepare_fs $profile + + # Corrupt the target device, only keep the superblock. + $XFS_IO_PROG -c "pwrite 1M 1023M" $target > /dev/null 2>&1 + + _scratch_mount + + # All content should be fine + $FSSUM_PROG -r $tmp.saved_fssum $SCRATCH_MNT > /dev/null + + # Scrub to fix the fs, this is known to report various correctable + # errors + $BTRFS_UTIL_PROG scrub start -B $SCRATCH_MNT >> $seqres.full 2>&1 + + # Make sure above scrub fixed the fs + $BTRFS_UTIL_PROG scrub start -Br $SCRATCH_MNT >> $seqres.full + if [ $? -ne 0 ]; then + echo "scrub failed to fix the fs for profile $profile" + fi + _scratch_unmount + _scratch_dev_pool_put +} + +workload raid1 2 +workload raid1c3 3 +workload raid1c4 4 +workload raid10 4 +workload raid5 3 +workload raid6 4 + +echo "Silence is golden" + +# success, all done +status=0 +exit diff --git a/tests/btrfs/261.out b/tests/btrfs/261.out new file mode 100644 index 00000000..679ddc0f --- /dev/null +++ b/tests/btrfs/261.out @@ -0,0 +1,2 @@ +QA output created by 261 +Silence is golden