2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
7 # Verify that XFS does not cause inode fork's extent count to overflow when
8 # swapping forks between files
10 seqres=$RESULT_DIR/$seq
11 echo "QA output created by $seq"
15 status=1 # failure is the default!
16 trap "_cleanup; exit \$status" 0 1 2 3 15
24 # get standard environment, filters and checks
29 # remove previous $seqres.full before test
32 # real QA test starts here
37 _require_xfs_scratch_rmapbt
38 _require_xfs_io_command "fcollapse"
39 _require_xfs_io_command "swapext"
40 _require_xfs_io_error_injection "reduce_max_iextents"
42 echo "* Swap extent forks"
44 echo "Format and mount fs"
45 _scratch_mkfs >> $seqres.full
46 _scratch_mount >> $seqres.full
48 bsize=$(_get_block_size $SCRATCH_MNT)
50 srcfile=${SCRATCH_MNT}/srcfile
51 donorfile=${SCRATCH_MNT}/donorfile
53 echo "Create \$donorfile having an extent of length 67 blocks"
54 $XFS_IO_PROG -f -s -c "pwrite -b $((17 * bsize)) 0 $((17 * bsize))" $donorfile \
57 # After the for loop the donor file will have the following extent layout
58 # | 0-4 | 5 | 6 | 7 | 8 | 9 | 10 |
59 echo "Fragment \$donorfile"
60 for i in $(seq 5 10); do
61 start_offset=$((i * bsize))
62 $XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $donorfile >> $seqres.full
65 echo "Create \$srcfile having an extent of length 18 blocks"
66 $XFS_IO_PROG -f -s -c "pwrite -b $((18 * bsize)) 0 $((18 * bsize))" $srcfile \
69 echo "Fragment \$srcfile"
70 # After the for loop the src file will have the following extent layout
71 # | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7-10 |
72 for i in $(seq 1 7); do
73 start_offset=$((i * bsize))
74 $XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $srcfile >> $seqres.full
77 echo "Collect \$donorfile's extent count"
78 donor_nr_exts=$(_xfs_get_fsxattr nextents $donorfile)
80 echo "Collect \$srcfile's extent count"
81 src_nr_exts=$(_xfs_get_fsxattr nextents $srcfile)
83 echo "Inject reduce_max_iextents error tag"
84 _scratch_inject_error reduce_max_iextents 1
86 echo "Swap \$srcfile's and \$donorfile's extent forks"
87 $XFS_IO_PROG -f -c "swapext $donorfile" $srcfile >> $seqres.full 2>&1
89 echo "Check for \$donorfile's extent count overflow"
90 nextents=$(_xfs_get_fsxattr nextents $donorfile)
92 if (( $nextents == $src_nr_exts )); then
93 echo "\$donorfile: Extent count overflow check failed"
96 echo "Check for \$srcfile's extent count overflow"
97 nextents=$(_xfs_get_fsxattr nextents $srcfile)
99 if (( $nextents == $donor_nr_exts )); then
100 echo "\$srcfile: Extent count overflow check failed"