From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5598D3B52EF; Mon, 27 Apr 2026 10:20:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777285214; cv=none; b=Pk29X49VrmbpUk7Et9vKmYtJOq2Ii9kWe7Msi75VvnoPf3DlenPovNZAHEskS9iFDi7qSVA6TDlcdSaSnC9m+nGiMOQ9QI26WyKFz8GT8g7QIrZOaCPBjhO5D5NtKSoa3G3+CEkN1FfVz23bIGL2hp9JGuJHLvpI5lb4BBkPQ6w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777285214; c=relaxed/simple; bh=+I4Av7ppRNVv1NUfWD+fNWXpFrT7K2fec1Lb09meN10=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t2q2UrLpceEwGju7Wfed3609lIZZaiuEMnZmqIt7bG6uL/ZZoYT4/G7xJNIZ+nfAZ+eAMOMBuW++PaFWwAF233MzILRHafGq30EaUCtNB0yW7inEMb5kH/+K3KiY/j9Krny+V4u7LwJbKfi6jl4wJuMXVY1D8jYINzgsG/7ehqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Q+tgfaMx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Q+tgfaMx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 641B7C2BCB8; Mon, 27 Apr 2026 10:20:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777285214; bh=+I4Av7ppRNVv1NUfWD+fNWXpFrT7K2fec1Lb09meN10=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q+tgfaMxHeOTM0wASqTJSHXn8E4E8qLwUFWsVsQmT1bkJCamcaR9ZYOCw+y2mdm/Y UyMsOgNAjbbQZyfZ9/4tV5xLPrH/amBm0r/m2LJrNTRJlR//C8M+vFhUdAjzhRr/YW GBZbSOKtxKC8kNwRuOFE+doFyjGUOrvQ9gv/fu9AWGSR8pigk2MDxtmGWqcvTM9Bk9 TBxrmKO1scHjE1ILspIEOeU/6Dg5q3II+rCCqy78BBVNVaLk2BCQ1C9SECi4SFZN1W xI477PzXKW8G4CnIb4V/oYMOP1UFScBoZu5TeXA0SF5BXtxOsV36YDTELIvEE3vHre +DFlRnaxcRD3Q== From: Anand Jain To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-f2fs@vger.kernel.org, amir73il@gmail.com, zlang@redhat.com, hch@infradead.org Subject: [PATCH v3 9/9] fstests: btrfs: test UUID consistency for clones with metadata_uuid Date: Mon, 27 Apr 2026 18:19:41 +0800 Message-ID: <8751efbeb7edd81e56e2b60886ae00e47f26fdfd.1777281778.git.asj@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Btrfs uses the metadata_uuid superblock feature to change the on-disk UUID without rewriting every block header. This patch adds a sanity check to ensure UUID consistency when a filesystem with metadata_uuid enabled is cloned. Signed-off-by: Anand Jain --- tests/btrfs/348 | 91 +++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/348.out | 19 ++++++++++ 2 files changed, 110 insertions(+) create mode 100644 tests/btrfs/348 create mode 100644 tests/btrfs/348.out diff --git a/tests/btrfs/348 b/tests/btrfs/348 new file mode 100644 index 000000000000..cfa56fdb4a4a --- /dev/null +++ b/tests/btrfs/348 @@ -0,0 +1,91 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2026 Anand Jain . All Rights Reserved. +# +# FS QA Test 348 +# +# Verify that the cloned filesystem UUID remains consistent, even when the +# `metadata_uuid` feature is enabled. +# + +. ./common/preamble +. ./common/filter + +_begin_fstest auto quick mount clone + +_require_test +_require_loop + +_cleanup() +{ + cd / + rm -r -f $tmp.* + umount $mnt1 $mnt2 2>/dev/null + _loop_image_destroy "${devs[@]}" 2> /dev/null +} + +filter_pool() +{ + sed -e "s|${devs[0]}|DEV1|g" -e "s|${mnt1}|MNT1|g" \ + -e "s|${devs[1]}|DEV2|g" -e "s|${mnt2}|MNT2|g" | _filter_spaces +} + +pre_clone_tune() +{ + local temp_mnt=$TEST_DIR/${seq}_mnt + + _require_command "$BTRFS_TUNE_PROG" btrfstune + mkdir -p $temp_mnt + _mount ${devs[0]} $temp_mnt + $BTRFS_UTIL_PROG subvolume create $temp_mnt/sv1 &> /dev/null + _unmount $temp_mnt + rm -r -f $temp_mnt + + $BTRFS_TUNE_PROG -m ${devs[0]} +} + +print_info() +{ + local mntpt=$1 + local tgt=$(findmnt -no SOURCE $mntpt) + local fsuuid=$(blkid -s UUID -o value $tgt) + + echo "mntpt=$mntpt tgt=$tgt fsuuid=$fsuuid" >> $seqres.full + echo + findmnt -o SOURCE,TARGET,UUID "$tgt" | tail -n +2 | \ + sed -e "s/${fsuuid}/FSUUID/g" | filter_pool + awk -v dev="$tgt" '$1 == dev { print $1, $2 }' /proc/self/mounts | \ + filter_pool + df --all --output=source,target "$tgt" | tail -n +2 | filter_pool +} + +devs=() +_loop_image_create_clone devs pre_clone_tune +mkdir -p $TEST_DIR/$seq +mnt1=$TEST_DIR/$seq/mnt1 +mnt2=$TEST_DIR/$seq/mnt2 +mkdir -p $mnt1 +mkdir -p $mnt2 + +_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[0]} $mnt1 || \ + _fail "Failed to mount dev1" +_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[1]} $mnt2 || \ + _fail "Failed to mount dev2" + +print_info $mnt1 +print_info $mnt2 + +echo +echo "**** mount cycle ****" +_unmount $mnt1 +_unmount $mnt2 +_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[1]} $mnt2 || \ + _fail "Failed to mount dev2" +_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[0]} $mnt1 || \ + _fail "Failed to mount dev1" + +print_info $mnt1 +print_info $mnt2 + +status=0 +exit diff --git a/tests/btrfs/348.out b/tests/btrfs/348.out new file mode 100644 index 000000000000..4b102e986246 --- /dev/null +++ b/tests/btrfs/348.out @@ -0,0 +1,19 @@ +QA output created by 348 + +DEV1 MNT1 FSUUID +DEV1 MNT1 +DEV1 MNT1 + +DEV2 MNT2 FSUUID +DEV2 MNT2 +DEV2 MNT2 + +**** mount cycle **** + +DEV1 MNT1 FSUUID +DEV1 MNT1 +DEV1 MNT1 + +DEV2 MNT2 FSUUID +DEV2 MNT2 +DEV2 MNT2 -- 2.43.0