{"id":2229319,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2229319/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/90f96625adafa29945c30a35c08ac290a7eaac6a.1777357321.git.asj@kernel.org/","project":{"id":8,"url":"http://patchwork.ozlabs.org/api/1.1/projects/8/?format=json","name":"Linux ext4 filesystem development","link_name":"linux-ext4","list_id":"linux-ext4.vger.kernel.org","list_email":"linux-ext4@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<90f96625adafa29945c30a35c08ac290a7eaac6a.1777357321.git.asj@kernel.org>","date":"2026-04-28T06:42:55","name":"[v4,5/9] fstests: verify f_fsid for cloned filesystems","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"08d3b0e7aa2befad30547b9ae474f6a6619d41af","submitter":{"id":92722,"url":"http://patchwork.ozlabs.org/api/1.1/people/92722/?format=json","name":"Anand Jain","email":"asj@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-ext4/patch/90f96625adafa29945c30a35c08ac290a7eaac6a.1777357321.git.asj@kernel.org/mbox/","series":[{"id":501769,"url":"http://patchwork.ozlabs.org/api/1.1/series/501769/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=501769","date":"2026-04-28T06:42:52","name":"fstests: add test coverage for cloned filesystem ids","version":4,"mbox":"http://patchwork.ozlabs.org/series/501769/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2229319/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2229319/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-ext4@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=bbNeyRLL;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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arc=none smtp.client-ip=10.30.226.201"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1777358603;\n\tbh=k4GyESEu7MP2NHXYX6ENRfo8qnkcpYjGLDdXL79AQF0=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=bbNeyRLL2O9GoK2WqxffCi0ZMfV2XhGMUmu3cAE2Go/td+frvlrFI52joml6RqDM5\n\t iYsoFd7apsPE8fiYawTvCWnkqFt0g60O2hryKLThdepAXgT3zKjo467u9e3nUJIFPo\n\t d/jmpMBtRCobfml1s4oIX0+sm5LDdCAk2k0hlWtOVpCLf4OB8jQGdJu/X/sPlBSjSD\n\t M3u6kvX/3TiRWtyEksFTMHiE9t0TCg7yhW70p1ZIw8bZfHXR+X1mGgJ0BkrTaXgzjI\n\t HnBGnqufnZBSbZ1A5gXKSCIpfc9Mv5gH6B24/Z3WxJw3qVAYunUpmSklawi/FXM9Xi\n\t jUq90qMqCFzAA==","From":"Anand Jain ","To":"fstests@vger.kernel.org","Cc":"linux-btrfs@vger.kernel.org,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-xfs@vger.kernel.org,\n\tlinux-f2fs@vger.kernel.org,\n\tamir73il@gmail.com,\n\tzlang@redhat.com,\n\thch@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":"\n <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","X-Spam-Status":"No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org"},"content":"Verify that the cloned filesystem provides an f_fsid that is persistent\nacross mount cycles, yet unique from the original filesystem's f_fsid.\n\nSigned-off-by: Anand Jain \n---\n tests/generic/802 | 62 +++++++++++++++++++++++++++++++++++++++++++\n tests/generic/802.out | 7 +++++\n 2 files changed, 69 insertions(+)\n create mode 100644 tests/generic/802\n create mode 100644 tests/generic/802.out","diff":"diff --git a/tests/generic/802 b/tests/generic/802\nnew file mode 100644\nindex 000000000000..31044695f3a8\n--- /dev/null\n+++ b/tests/generic/802\n@@ -0,0 +1,62 @@\n+#! /bin/bash\n+# SPDX-License-Identifier: GPL-2.0\n+# Copyright (c) 2026 Anand Jain . All Rights Reserved.\n+#\n+# FS QA Test 802\n+# Verify f_fsid and s_uuid of cloned filesystems across mount cycle.\n+\n+. ./common/preamble\n+\n+_begin_fstest auto quick mount clone\n+\n+_require_test\n+_require_block_device $TEST_DEV\n+_require_loop\n+\n+[ \"$FSTYP\" = \"btrfs\" ] && _fixed_by_kernel_commit xxxxxxxxxxxx \\\n+\t\"btrfs: use on-disk uuid for s_uuid in temp_fsid mounts\"\n+[ \"$FSTYP\" = \"btrfs\" ] && _fixed_by_kernel_commit xxxxxxxxxxxx \\\n+\t\"btrfs: derive f_fsid from on-disk fsuuid and dev_t\"\n+\n+_cleanup()\n+{\n+\tcd /\n+\trm -r -f $tmp.*\n+\tumount $mnt1 $mnt2 2>/dev/null\n+\t_loop_image_destroy \"${devs[@]}\" 2> /dev/null\n+}\n+\n+devs=()\n+_loop_image_create_clone devs\n+mkdir -p $TEST_DIR/$seq\n+mnt1=$TEST_DIR/$seq/mnt1\n+mnt2=$TEST_DIR/$seq/mnt2\n+mkdir -p $mnt1\n+mkdir -p $mnt2\n+\n+_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[0]} $mnt1 || \\\n+\t\t\t\t\t\t_fail \"Failed to mount dev1\"\n+_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[1]} $mnt2 || \\\n+\t\t\t\t\t\t_fail \"Failed to mount dev2\"\n+\n+fsid_scratch=$(stat -f -c \"%i\" $mnt1)\n+fsid_clone=$(stat -f -c \"%i\" $mnt2)\n+\n+echo \"**** fsid initially ****\"\n+echo $fsid_scratch | sed -e \"s/$fsid_scratch/FSID_SCRATCH/g\"\n+echo $fsid_clone | sed -e \"s/$fsid_clone/FSID_CLONE/g\"\n+\n+# Make sure fsid still match across a mount cycle, also reverse the order.\n+echo \"**** fsid after mount cycle ****\"\n+_unmount $mnt1\n+_unmount $mnt2\n+_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[1]} $mnt2 || \\\n+\t\t\t\t\t\t_fail \"Failed to mount dev2\"\n+_mount $(_common_dev_mount_options) $(_clone_mount_option) ${devs[0]} $mnt1 || \\\n+\t\t\t\t\t\t_fail \"Failed to mount dev1\"\n+\n+stat -f -c \"%i\" $mnt1 | sed -e \"s/$fsid_scratch/FSID_SCRATCH/g\"\n+stat -f -c \"%i\" $mnt2 | sed -e \"s/$fsid_clone/FSID_CLONE/g\"\n+\n+status=0\n+exit\ndiff --git a/tests/generic/802.out b/tests/generic/802.out\nnew file mode 100644\nindex 000000000000..d1e008f122bb\n--- /dev/null\n+++ b/tests/generic/802.out\n@@ -0,0 +1,7 @@\n+QA output created by 802\n+**** fsid initially ****\n+FSID_SCRATCH\n+FSID_CLONE\n+**** fsid after mount cycle ****\n+FSID_SCRATCH\n+FSID_CLONE\n","prefixes":["v4","5/9"]}