blob: 07a94334a9ef84d9b74d848a5e135d694456f0f1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2024 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test 316
#
# Make sure btrfs qgroup won't leak its reserved data space if qgroup is
# marked inconsistent.
#
# This exercises a regression introduced in v6.1 kernel by the following commit:
#
# e15e9f43c7ca ("btrfs: introduce BTRFS_QGROUP_RUNTIME_FLAG_NO_ACCOUNTING to skip qgroup accounting")
#
. ./common/preamble
_begin_fstest auto quick qgroup
_supported_fs btrfs
_require_scratch
_fixed_by_kernel_commit xxxxxxxxxxxx \
"btrfs: qgroup: always free reserved space for extent records"
_scratch_mkfs >> $seqres.full
_scratch_mount
$BTRFS_UTIL_PROG quota enable $SCRATCH_MNT
$BTRFS_UTIL_PROG quota rescan -w $SCRATCH_MNT >> $seqres.full
$BTRFS_UTIL_PROG qgroup create 1/0 $SCRATCH_MNT >> $seqres.full
$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/subv1 >> $seqres.full
# This would mark qgroup inconsistent, as the snapshot belongs to a different
# higher level qgroup, we have to do full rescan on both source and snapshot.
# This can be very slow for large subvolumes, so btrfs only marks qgroup
# inconsistent and let users to determine when to do a full rescan
$BTRFS_UTIL_PROG subvolume snapshot -i 1/0 $SCRATCH_MNT/subv1 $SCRATCH_MNT/snap1 >> $seqres.full
# This write would lead to a qgroup extent record holding the reserved 128K.
# And for unpatched kernels, the reserved space would not be freed properly
# due to qgroup is inconsistent.
_pwrite_byte 0xcd 0 128K $SCRATCH_MNT/foobar >> $seqres.full
# The qgroup leak detection is only triggered at unmount time.
_scratch_unmount
# Check the dmesg warning for data rsv leak.
#
# If CONFIG_BTRFS_DEBUG is enabled, we would have a kernel warning with
# backtrace, but for release builds, it's just a warning line.
# So here we manually check the warning message.
if _dmesg_since_test_start | grep -q "leak"; then
_fail "qgroup data reserved space leaked"
fi
echo "Silence is golden"
# success, all done
status=0
exit
|
