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Wed, 8 Dec 2021 14:07:54 +0000 From: Anand Jain To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, josef@toxicpanda.com Subject: [PATCH] btrfs/254: test cleaning up of the stale device Date: Wed, 8 Dec 2021 22:07:46 +0800 Message-Id: X-Mailer: git-send-email 2.33.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SG2P153CA0033.APCP153.PROD.OUTLOOK.COM (2603:1096:4:c7::20) To MN2PR10MB4128.namprd10.prod.outlook.com (2603:10b6:208:1d2::24) MIME-Version: 1.0 Received: from localhost (39.109.140.76) by SG2P153CA0033.APCP153.PROD.OUTLOOK.COM (2603:1096:4:c7::20) with Microsoft SMTP Server (version=TLS1_2, cipher=) via Frontend Transport; Wed, 8 Dec 2021 14:07:54 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 77d30a33-e353-4955-66d7-08d9ba542128 X-MS-TrafficTypeDiagnostic: BLAPR10MB5187:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5797; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Fixed by the kernel patch (in the ml): btrfs: harden identification of the stale device Signed-off-by: Anand Jain --- tests/btrfs/254 | 110 ++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/254.out | 6 +++ 2 files changed, 116 insertions(+) create mode 100755 tests/btrfs/254 create mode 100644 tests/btrfs/254.out diff --git a/tests/btrfs/254 b/tests/btrfs/254 new file mode 100755 index 000000000000..6c3414f73d15 --- /dev/null +++ b/tests/btrfs/254 @@ -0,0 +1,110 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2021 Anand Jain. All Rights Reserved. +# Copyright (c) 2021 Oracle. All Rights Reserved. +# +# FS QA Test No. 254 +# +# Test if the kernel can free the stale device entries. +# +. ./common/preamble +_begin_fstest auto quick + +# Override the default cleanup function. +node=$seq-test +cleanup_dmdev() +{ + _dmsetup_remove $node +} + +_cleanup() +{ + cd / + rm -f $tmp.* + rm -rf $seq_mnt > /dev/null 2>&1 + cleanup_dmdev +} + +# Import common functions. +. ./common/filter +. ./common/filter.btrfs + +# real QA test starts here +_supported_fs btrfs +_require_scratch_dev_pool 3 +_require_block_device $SCRATCH_DEV +_require_dm_target linear +_require_btrfs_forget_or_module_loadable +_require_scratch_nocheck +_require_command "$WIPEFS_PROG" wipefs + +_scratch_dev_pool_get 3 + +setup_dmdev() +{ + # Some small size. + size=$((1024 * 1024 * 1024)) + size_in_sector=$((size / 512)) + + table="0 $size_in_sector linear $SCRATCH_DEV 0" + _dmsetup_create $node --table "$table" || \ + _fail "setup dm device failed" +} + +# Use a known it is much easier to debug. +uuid="--uuid 12345678-1234-1234-1234-123456789abc" +lvdev=/dev/mapper/$node + +seq_mnt=$TEST_DIR/$seq.mnt +mkdir -p $seq_mnt + +test_forget() +{ + setup_dmdev + dmdev=$(realpath $lvdev) + + _mkfs_dev $uuid $dmdev + + # Check if we can un-scan using the mapper device path. + $BTRFS_UTIL_PROG device scan --forget $lvdev + + # Cleanup + $WIPEFS_PROG -a $lvdev > /dev/null 2>&1 + $BTRFS_UTIL_PROG device scan --forget + + cleanup_dmdev +} + +test_add_device() +{ + setup_dmdev + dmdev=$(realpath $lvdev) + scratch_dev2=$(echo $SCRATCH_DEV_POOL | awk '{print $2}') + scratch_dev3=$(echo $SCRATCH_DEV_POOL | awk '{print $3}') + + _mkfs_dev $scratch_dev3 + _mount $scratch_dev3 $seq_mnt + + _mkfs_dev $uuid -draid1 -mraid1 $dmdev $scratch_dev2 + + # Add device should free the device under $uuid in the kernel. + $BTRFS_UTIL_PROG device add -f $lvdev $seq_mnt + + _mount -o degraded $scratch_dev2 $SCRATCH_MNT + + # Check if the missing device is shown. + $BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | \ + _filter_btrfs_filesystem_show + + $UMOUNT_PROG $seq_mnt + _scratch_unmount + cleanup_dmdev +} + +test_forget +test_add_device + +_scratch_dev_pool_put + +status=0 +exit diff --git a/tests/btrfs/254.out b/tests/btrfs/254.out new file mode 100644 index 000000000000..20819cf5140c --- /dev/null +++ b/tests/btrfs/254.out @@ -0,0 +1,6 @@ +QA output created by 254 +Label: none uuid: + Total devices FS bytes used + devid size used path SCRATCH_DEV + *** Some devices missing + -- 2.27.0