mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
1c18b9ec2f
Prior to lazysbcount, the xfs mount code blindly trusted the value of the fdblocks counter in the primary super, which means that the kernel doesn't detect the fuzzed fdblocks value at all. V4 is deprecated and pre-lazysbcount V4 hasn't been the default for ~14 years, so we'll just skip these two tests on those old filesystems. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
62 lines
1.4 KiB
Bash
Executable File
62 lines
1.4 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2018 Oracle. All Rights Reserved.
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#
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# FS QA Test No. 491
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#
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# Test detection & fixing of bad summary block counts at mount time.
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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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# Modify as appropriate.
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_supported_fs xfs
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_require_scratch
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echo "Format and mount"
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_scratch_mkfs > $seqres.full 2>&1
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# pre-lazysbcount filesystems blindly trust the primary sb fdblocks
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_require_scratch_xfs_features LAZYSBCOUNT
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_scratch_mount >> $seqres.full 2>&1
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echo "test file" > $SCRATCH_MNT/testfile
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echo "Fuzz fdblocks"
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_scratch_unmount
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dblocks=$(_scratch_xfs_get_metadata_field dblocks 'sb 0')
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_scratch_xfs_set_metadata_field fdblocks $((dblocks * 2)) 'sb 0' > $seqres.full 2>&1
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echo "Detection and Correction"
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_scratch_mount >> $seqres.full 2>&1
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avail=$(stat -c '%a' -f $SCRATCH_MNT)
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total=$(stat -c '%b' -f $SCRATCH_MNT)
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echo "avail: $avail" >> $seqres.full
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echo "total: $total" >> $seqres.full
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test "$avail" -gt "$total" && echo "free space bad: $avail > $total"
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# success, all done
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status=0
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exit
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