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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
#
# FS QA Test 532
#
# Verify that XFS does not cause inode fork's extent count to overflow when
# adding/removing xattrs.
. ./common/preamble
_begin_fstest auto quick attr
# Import common functions.
. ./common/filter
. ./common/attr
. ./common/inject
. ./common/populate
# real QA test starts here
_supported_fs xfs
_require_scratch
_require_attrs
_require_xfs_debug
_require_test_program "punch-alternating"
_require_xfs_io_error_injection "reduce_max_iextents"
_require_xfs_io_error_injection "bmap_alloc_minlen_extent"
echo "Format and mount fs"
_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full
_scratch_mount >> $seqres.full
# Disable realtime inherit flag (if any) on root directory so that space on data
# device gets fragmented rather than realtime device.
_xfs_force_bdev data $SCRATCH_MNT
bsize=$(_get_block_size $SCRATCH_MNT)
attr_len=255
testfile=$SCRATCH_MNT/testfile
echo "Consume free space"
fillerdir=$SCRATCH_MNT/fillerdir
nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT)
nr_free_blks=$((nr_free_blks * 90 / 100))
_fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 0 >> $seqres.full 2>&1
echo "Create fragmented filesystem"
for dentry in $(ls -1 $fillerdir/); do
$here/src/punch-alternating $fillerdir/$dentry >> $seqres.full
done
echo "Inject bmap_alloc_minlen_extent error tag"
_scratch_inject_error bmap_alloc_minlen_extent 1
echo "* Set xattrs"
echo "Create \$testfile"
touch $testfile
echo "Inject reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 1
echo "Create xattrs"
nr_attrs=$((bsize * 20 / attr_len))
for i in $(seq 1 $nr_attrs); do
attr="$(printf "trusted.%0247d" $i)"
$SETFATTR_PROG -n "$attr" $testfile >> $seqres.full 2>&1
[[ $? != 0 ]] && break
done
echo "Verify \$testfile's naextent count"
naextents=$(_xfs_get_fsxattr naextents $testfile)
if (( $naextents > 10 )); then
echo "Extent count overflow check failed: naextents = $naextents"
exit 1
fi
echo "Disable reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 0
echo "Remove \$testfile"
rm $testfile
echo "* Remove xattrs"
echo "Create \$testfile"
touch $testfile
echo "Create initial xattr extents"
naextents=0
last=""
start=1
nr_attrs=$((bsize / attr_len))
while (( $naextents < 4 )); do
end=$((start + nr_attrs - 1))
for i in $(seq $start $end); do
attr="$(printf "trusted.%0247d" $i)"
$SETFATTR_PROG -n $attr $testfile
done
start=$((end + 1))
naextents=$(_xfs_get_fsxattr naextents $testfile)
done
echo "Inject reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 1
echo "Remove xattr to trigger -EFBIG"
attr="$(printf "trusted.%0247d" 1)"
$SETFATTR_PROG -x "$attr" $testfile >> $seqres.full 2>&1
if [[ $? == 0 ]]; then
echo "Xattr removal succeeded; Should have failed "
exit 1
fi
echo "Disable reduce_max_iextents error tag"
_scratch_inject_error reduce_max_iextents 0
rm $testfile
# success, all done
status=0
exit
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