4 # Basic defragmentation sanity tests
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7 # Copyright (c) 2009 Eric Sandeen. All Rights Reserved.
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25 seqres=$RESULT_DIR/$seq
26 echo "QA output created by $seq"
30 status=1 # failure is the default!
31 trap "_cleanup; exit \$status" 0 1 2 3 15
40 # get standard environment, filters and checks
45 # real QA test starts here
46 _supported_fs xfs ext4 btrfs
50 # We require scratch so that we'll have free contiguous space
52 _scratch_mkfs >/dev/null 2>&1
57 fragfile=$SCRATCH_MNT/fragfile.$$
61 # Craft some fragmented files, defrag them, check the result.
63 echo "zero-length file:" | tee -a $seqres.full
67 echo "Sparse file (no blocks):" | tee -a $seqres.full
68 $XFS_IO_PROG -f -c "truncate 1m" $fragfile
71 echo "Contiguous file:" | tee -a $seqres.full
72 dd if=/dev/zero of=$fragfile bs=4k count=4 &>/dev/null
75 echo "Write backwards sync, but contiguous - should defrag to 1 extent" | tee -a $seqres.full
76 for I in `seq 9 -1 0`; do
77 dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null
81 echo "Write backwards sync leaving holes - defrag should do nothing" | tee -a $seqres.full
82 for I in `seq 31 -2 0`; do
83 dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null
87 echo "Write forwards sync leaving holes - defrag should do nothing" | tee -a $seqres.full
88 for I in `seq 0 2 31`; do
89 dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null