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 A37A4175A72; Tue, 28 Apr 2026 06:43:23 +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=1777358605; cv=none; b=MVqqzkampC9nMNjzB8i1flsMzHvt5W/1SpTlmhsFZAlJZDkhahsE4t2c8IGW+wgbLTNs+dZPYVf38ucMSx9PKzn8o3fnq1QQFG8WxPTuCXs3oG2FXqI0SrPaH2Zm5+UH37qZtgaom/piyMIaNPErSGOH1b7QLeLMmAF+w3mRTek= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777358605; c=relaxed/simple; bh=k4GyESEu7MP2NHXYX6ENRfo8qnkcpYjGLDdXL79AQF0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W9b19X4uuWc9I0dvVBa8ZL5/oDB8+vdRRWOhfG4e3DxAs2GO55zfPbaubeJy8c7rh2iYE6eVPLOv/1zH6IIAoB2pS+Vo8bt9VBX3/1PjQRdXbKCOetHBL7PMYcC/qQX9WKWLyJ0YEuNJoYgjfJXAATGEaAs5M4fMOEY45BMefks= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bbNeyRLL; 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="bbNeyRLL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BDE68C4AF0E; Tue, 28 Apr 2026 06:43:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777358603; bh=k4GyESEu7MP2NHXYX6ENRfo8qnkcpYjGLDdXL79AQF0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bbNeyRLL2O9GoK2WqxffCi0ZMfV2XhGMUmu3cAE2Go/td+frvlrFI52joml6RqDM5 iYsoFd7apsPE8fiYawTvCWnkqFt0g60O2hryKLThdepAXgT3zKjo467u9e3nUJIFPo d/jmpMBtRCobfml1s4oIX0+sm5LDdCAk2k0hlWtOVpCLf4OB8jQGdJu/X/sPlBSjSD M3u6kvX/3TiRWtyEksFTMHiE9t0TCg7yhW70p1ZIw8bZfHXR+X1mGgJ0BkrTaXgzjI HnBGnqufnZBSbZ1A5gXKSCIpfc9Mv5gH6B24/Z3WxJw3qVAYunUpmSklawi/FXM9Xi jUq90qMqCFzAA== 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 v4 5/9] fstests: verify f_fsid for cloned filesystems Date: Tue, 28 Apr 2026 14:42:55 +0800 Message-ID: <90f96625adafa29945c30a35c08ac290a7eaac6a.1777357321.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 Verify that the cloned filesystem provides an f_fsid that is persistent across mount cycles, yet unique from the original filesystem's f_fsid. Signed-off-by: Anand Jain --- tests/generic/802 | 62 +++++++++++++++++++++++++++++++++++++++++++ tests/generic/802.out | 7 +++++ 2 files changed, 69 insertions(+) create mode 100644 tests/generic/802 create mode 100644 tests/generic/802.out diff --git a/tests/generic/802 b/tests/generic/802 new file mode 100644 index 000000000000..31044695f3a8 --- /dev/null +++ b/tests/generic/802 @@ -0,0 +1,62 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2026 Anand Jain . All Rights Reserved. +# +# FS QA Test 802 +# Verify f_fsid and s_uuid of cloned filesystems across mount cycle. + +. ./common/preamble + +_begin_fstest auto quick mount clone + +_require_test +_require_block_device $TEST_DEV +_require_loop + +[ "$FSTYP" = "btrfs" ] && _fixed_by_kernel_commit xxxxxxxxxxxx \ + "btrfs: use on-disk uuid for s_uuid in temp_fsid mounts" +[ "$FSTYP" = "btrfs" ] && _fixed_by_kernel_commit xxxxxxxxxxxx \ + "btrfs: derive f_fsid from on-disk fsuuid and dev_t" + +_cleanup() +{ + cd / + rm -r -f $tmp.* + umount $mnt1 $mnt2 2>/dev/null + _loop_image_destroy "${devs[@]}" 2> /dev/null +} + +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]} $mnt2 || \ + _fail "Failed to mount dev2" + +fsid_scratch=$(stat -f -c "%i" $mnt1) +fsid_clone=$(stat -f -c "%i" $mnt2) + +echo "**** fsid initially ****" +echo $fsid_scratch | sed -e "s/$fsid_scratch/FSID_SCRATCH/g" +echo $fsid_clone | sed -e "s/$fsid_clone/FSID_CLONE/g" + +# Make sure fsid still match across a mount cycle, also reverse the order. +echo "**** fsid after 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" + +stat -f -c "%i" $mnt1 | sed -e "s/$fsid_scratch/FSID_SCRATCH/g" +stat -f -c "%i" $mnt2 | sed -e "s/$fsid_clone/FSID_CLONE/g" + +status=0 +exit diff --git a/tests/generic/802.out b/tests/generic/802.out new file mode 100644 index 000000000000..d1e008f122bb --- /dev/null +++ b/tests/generic/802.out @@ -0,0 +1,7 @@ +QA output created by 802 +**** fsid initially **** +FSID_SCRATCH +FSID_CLONE +**** fsid after mount cycle **** +FSID_SCRATCH +FSID_CLONE -- 2.43.0