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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2018 Oracle. All Rights Reserved.
#
# FS QA Test No. 493
#
# Test detection & fixing of bad summary block counts at mount time.
# Corrupt the AGFs to test mount failure when mount-fixing fails.
#
. ./common/preamble
_begin_fstest auto quick fuzzers
# Import common functions.
. ./common/filter
# real QA test starts here
# Modify as appropriate.
_supported_fs xfs
_require_scratch_nocheck
echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
echo "test file" > $SCRATCH_MNT/testfile
echo "Fuzz fdblocks and btreeblks"
_scratch_unmount
dblocks=$(_scratch_xfs_get_metadata_field dblocks 'sb 0')
_scratch_xfs_set_metadata_field fdblocks $((dblocks * 2)) 'sb 0' > $seqres.full 2>&1
aglen=$(_scratch_xfs_get_metadata_field length 'agf 0')
_scratch_xfs_set_metadata_field btreeblks $aglen 'agf 0' > $seqres.full 2>&1
echo "Detection and Correction"
if _try_scratch_mount >> $seqres.full 2>&1; then
echo "mount should have failed"
avail=$(stat -c '%a' -f $SCRATCH_MNT)
total=$(stat -c '%b' -f $SCRATCH_MNT)
echo "avail: $avail" >> $seqres.full
echo "total: $total" >> $seqres.full
test "$avail" -gt "$total" && echo "free space bad: $avail > $total"
_scratch_unmount
fi
_scratch_xfs_repair -n >> $seqres.full 2>&1 && echo "repair didn't find fuzz?"
# success, all done
status=0
exit
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