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 3395E30DD2F; Mon, 27 Apr 2026 10:20:07 +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=1777285208; cv=none; b=vF3mVtTzXGI6LA/6Gkf4ouW/7lJmglbl8aygjnsrNigzJPXcqilH/spB4ZM0/0BqghvZpJ9WpACNOrgrbNiXV4mFo4G5zPcyP6iU+whoqlgc1/B7aM4+r7X0LcIEO5G/ncpIhBl7XRoqrUxlgzrjtHyEYqRJa/1crm1cYZGclPA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777285208; c=relaxed/simple; bh=GeCRGUMlxCMoTsQDYMvYEUb+PVYW3F1M11Rsxh3th4g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gIHDui8r1fS3eQnDPOqaCo9IDRCvnPfCjDYzMhK6Ej10PeT1Vz8wuPGB9zViQGZOBgSvF4mMHTO/2+K2k5+jpGVy4Wnyqd4IjpC/CmcE60Of0tMp3ScDlkcq41gjaUciE3al03Bkf2w4uPKBU/mdK/ZLbKMyKVlAXTzQMta5lsU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=C8OKTJI1; 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="C8OKTJI1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 410D5C19425; Mon, 27 Apr 2026 10:20:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777285207; bh=GeCRGUMlxCMoTsQDYMvYEUb+PVYW3F1M11Rsxh3th4g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C8OKTJI1Ypa+yy06CtQ7Q4aonQD58tTTR/esnf59/geJC+AGJOa1SVpj08M5/q903 yNgmR5IqCmBO+40PP4fHghmRdnqeCN91CJchWNcjR19sNhlwzXHdIcFKs2o6vZ2NYt pW+/SNOqKyDDic5D7awyvPQ/3+a78JItdhxaKCBJgYaYxw22xHPcJ18Vjl7TaymeWw 0q1nNZbjhvCLNn7JIHgmPQ4nI6kGJl8nNyLi8pBK41Kdof/Bt/3IHDce1CckR4pFWr 9OqymCyzVMPAAMGcJIFvGBZ9A1oFoDldGMDobcpr9i2AjfQO2ky6tMdvSkU8bOYpvh kdIjPWFuhuuFw== 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 6/9] fstests: verify libblkid resolution of duplicate UUIDs Date: Mon, 27 Apr 2026 18:19:38 +0800 Message-ID: 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 Verify how findmnt, df (libblkid) resolve device paths when multiple block devices share the same FSUUID. Signed-off-by: Anand Jain --- tests/generic/803 | 75 +++++++++++++++++++++++++++++++++++++++++++ tests/generic/803.out | 19 +++++++++++ 2 files changed, 94 insertions(+) create mode 100644 tests/generic/803 create mode 100644 tests/generic/803.out diff --git a/tests/generic/803 b/tests/generic/803 new file mode 100644 index 000000000000..1e0fbc768050 --- /dev/null +++ b/tests/generic/803 @@ -0,0 +1,75 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2026 Anand Jain . All Rights Reserved. +# +# FS QA Test 803 +# Verify how libblkid resolve devices when multiple devices sharing the +# same FSUUID. + +. ./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 +} + +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 +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/generic/803.out b/tests/generic/803.out new file mode 100644 index 000000000000..20a1cb36a213 --- /dev/null +++ b/tests/generic/803.out @@ -0,0 +1,19 @@ +QA output created by 803 + +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