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 # remapping extents from one file's inode fork to another.
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
30 # remove previous $seqres.full before test
33 # real QA test starts here
37 _require_scratch_reflink
39 _require_xfs_io_command "reflink"
40 _require_xfs_io_error_injection "reduce_max_iextents"
42 echo "* Reflink remap extents"
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 dstfile=${SCRATCH_MNT}/dstfile
55 echo "Create \$srcfile having an extent of length $nr_blks blocks"
56 $XFS_IO_PROG -f -c "pwrite -b $((nr_blks * bsize)) 0 $((nr_blks * bsize))" \
57 -c fsync $srcfile >> $seqres.full
59 echo "Create \$dstfile having an extent of length $nr_blks blocks"
60 $XFS_IO_PROG -f -c "pwrite -b $((nr_blks * bsize)) 0 $((nr_blks * bsize))" \
61 -c fsync $dstfile >> $seqres.full
63 echo "Inject reduce_max_iextents error tag"
64 _scratch_inject_error reduce_max_iextents 1
66 echo "Reflink every other block from \$srcfile into \$dstfile"
67 for i in $(seq 1 2 $((nr_blks - 1))); do
68 _reflink_range $srcfile $((i * bsize)) $dstfile $((i * bsize)) $bsize \
72 echo "Verify \$dstfile's extent count"
73 nextents=$(_xfs_get_fsxattr nextents $dstfile)
74 if (( $nextents > 10 )); then
75 echo "Extent count overflow check failed: nextents = $nextents"