mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Nikolay Borisov
5231c9fa16
This patch ensures device corrupted counter is being modified when we try to read broken data. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
93 lines
2.5 KiB
Bash
Executable File
93 lines
2.5 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test 215
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#
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# Test that reading corrupted files would correctly increment device status
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# counters. This is fixed by the following linux kernel commit:
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# btrfs: Increment device corruption error in case of checksum error
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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get_physical()
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{
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$BTRFS_UTIL_PROG inspect-internal dump-tree -t 3 $SCRATCH_DEV | \
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grep $1 -A2 | \
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$AWK_PROG "(\$1 ~ /stripe/ && \$3 ~ /devid/ && \$2 ~ /0/) { print \$6 }"
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}
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# Modify as appropriate.
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_supported_fs btrfs
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_supported_os Linux
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_scratch_mkfs > /dev/null
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# disable freespace inode to ensure file is the first thing in the data
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# blobk group
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_scratch_mount -o nospace_cache
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blocksize=$(_get_block_size $SCRATCH_MNT)
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filesize=$((8*$blocksize))
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uuid=$(findmnt -n -o UUID "$SCRATCH_MNT")
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if [ ! -e /sys/fs/btrfs/$uuid/bdi ]; then
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_notrun "bdi link not found"
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fi
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#create an 8 block file
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$XFS_IO_PROG -d -f -c "pwrite -S 0xbb -b $filesize 0 $filesize" "$SCRATCH_MNT/foobar" > /dev/null
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logical_extent=$($FILEFRAG_PROG -v "$SCRATCH_MNT/foobar" | _filter_filefrag | cut -d '#' -f 1)
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physical_extent=$(get_physical $logical_extent)
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echo "logical = $logical_extent physical=$physical_extent" >> $seqres.full
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# corrupt first 4 blocks of file
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_scratch_unmount
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$XFS_IO_PROG -d -c "pwrite -S 0xaa -b $blocksize $physical_extent $((4*$blocksize))" $SCRATCH_DEV > /dev/null
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_scratch_mount
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# disable readahead to avoid skewing the counter
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echo 0 > /sys/fs/btrfs/$uuid/bdi/read_ahead_kb
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# buffered reads whould result in a single error since the read is done
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# page by page
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$XFS_IO_PROG -c "pread -b $filesize 0 $filesize" "$SCRATCH_MNT/foobar" > /dev/null 2>&1
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errs=$($BTRFS_UTIL_PROG device stats $SCRATCH_DEV | awk '/corruption_errs/ { print $2 }')
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if [ $errs -ne 1 ]; then
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_fail "Errors: $errs expected: 1"
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fi
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# DIO does check every sector
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$XFS_IO_PROG -d -c "pread -b $filesize 0 $filesize" "$SCRATCH_MNT/foobar" > /dev/null 2>&1
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errs=$($BTRFS_UTIL_PROG device stats $SCRATCH_DEV | awk '/corruption_errs/ { print $2 }')
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if [ $errs -ne 5 ]; then
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_fail "Errors: $errs expected: 1"
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fi
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# success, all done
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echo "Silence is golden"
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status=0
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exit
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