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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2023 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test 289
#
# Make sure btrfs-scrub reports errors correctly for repaired sectors.
#
. ./common/preamble
_begin_fstest auto quick scrub repair
. ./common/filter
_supported_fs btrfs
_require_scratch
# No data checksums for NOCOW case, so can't detect corruption and repair data.
_require_btrfs_no_nodatacow
_require_odirect
# Overwriting data is forbidden on a zoned block device
_require_non_zoned_device "${SCRATCH_DEV}"
# The errors reported would be in the unit of sector, thus the number
# is dependent on the sectorsize.
_require_btrfs_support_sectorsize 4096
_fixed_by_kernel_commit 79b8ee702c91 \
"btrfs: scrub: also report errors hit during the initial read"
# Create a single btrfs with DUP data profile, and create one 128K file.
_scratch_mkfs -s 4k -d dup -b 1G >> $seqres.full 2>&1
_scratch_mount
$XFS_IO_PROG -f -d -c "pwrite -S 0xaa -b 128K 0 128K" "$SCRATCH_MNT/foobar" \
> /dev/null
sync
logical=$(_btrfs_get_first_logical "$SCRATCH_MNT/foobar")
physical1=$(_btrfs_get_physical ${logical} 1)
devpath1=$(_btrfs_get_device_path ${logical} 1)
_scratch_unmount
echo " corrupt stripe #1, devpath $devpath1 physical $physical1" \
>> $seqres.full
$XFS_IO_PROG -d -c "pwrite -S 0xf1 -b 64K $physical1 128K" $devpath1 \
>> $seqres.full
# Mount and do a scrub and compare the output
_scratch_mount
$BTRFS_UTIL_PROG scrub start -BR $SCRATCH_MNT >> $tmp.scrub_report 2>&1
cat $tmp.scrub_report >> $seqres.full
# Csum errors should be 128K/4K = 32
csum_errors=$(grep "csum_errors" $tmp.scrub_report | $AWK_PROG '{print $2}')
if [ $csum_errors -ne 32 ]; then
echo "csum_errors incorrect, expect 32 has $csum_errors"
fi
# And all errors should be repaired, thus corrected errors should also be 32.
corrected_errors=$(grep "corrected_errors" $tmp.scrub_report | $AWK_PROG '{print $2}')
if [ $corrected_errors -ne 32 ]; then
echo "corrected_errors incorrect, expect 32 has $corrected_errors"
fi
echo "Silence is golden"
status=0
exit
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