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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
#
# FS QA Test 531
#
# Verify that XFS does not cause inode fork's extent count to overflow when
# punching out an extent.
. ./common/preamble
_begin_fstest auto quick punch zero insert collapse
# Import common functions.
. ./common/filter
. ./common/inject
# real QA test starts here
_supported_fs xfs
_require_scratch
_require_xfs_debug
_require_xfs_io_command "fpunch"
_require_xfs_io_command "finsert"
_require_xfs_io_command "fcollapse"
_require_xfs_io_command "fzero"
_require_xfs_io_error_injection "reduce_max_iextents"
echo "Format and mount fs"
_scratch_mkfs >> $seqres.full
_scratch_mount >> $seqres.full
bsize=$(_get_file_block_size $SCRATCH_MNT)
nr_blks=30
testfile=$SCRATCH_MNT/testfile
for op in fpunch finsert fcollapse fzero; do
echo "* $op regular file"
echo "Create \$testfile"
touch $testfile
echo "Inject reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 1
$XFS_IO_PROG -f -s \
-c "pwrite -b $((nr_blks * bsize)) 0 $((nr_blks * bsize))" \
$testfile >> $seqres.full
echo "$op alternating blocks"
for i in $(seq 1 2 $((nr_blks - 1))); do
$XFS_IO_PROG -f -c "$op $((i * bsize)) $bsize" $testfile \
>> $seqres.full 2>&1
[[ $? != 0 ]] && break
done
echo "Verify \$testfile's extent count"
nextents=$(_xfs_get_fsxattr nextents $testfile)
if (( $nextents > 10 )); then
echo "Extent count overflow check failed: nextents = $nextents"
exit 1
fi
echo "Disable reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 0
rm $testfile
done
# success, all done
status=0
exit
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