mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Chandan Babu R
200ee9e93b
This test verifies that XFS does not cause inode fork's extent count to overflow when swapping forks across two files. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
106 lines
2.7 KiB
Bash
Executable File
106 lines
2.7 KiB
Bash
Executable File
#! /bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
|
|
#
|
|
# FS QA Test 537
|
|
#
|
|
# Verify that XFS does not cause inode fork's extent count to overflow when
|
|
# swapping forks between files
|
|
seq=`basename $0`
|
|
seqres=$RESULT_DIR/$seq
|
|
echo "QA output created by $seq"
|
|
|
|
here=`pwd`
|
|
tmp=/tmp/$$
|
|
status=1 # failure is the default!
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
_cleanup()
|
|
{
|
|
cd /
|
|
rm -f $tmp.*
|
|
}
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common/rc
|
|
. ./common/filter
|
|
. ./common/inject
|
|
|
|
# remove previous $seqres.full before test
|
|
rm -f $seqres.full
|
|
|
|
# real QA test starts here
|
|
|
|
_supported_fs xfs
|
|
_require_scratch
|
|
_require_xfs_debug
|
|
_require_xfs_scratch_rmapbt
|
|
_require_xfs_io_command "fcollapse"
|
|
_require_xfs_io_command "swapext"
|
|
_require_xfs_io_error_injection "reduce_max_iextents"
|
|
|
|
echo "* Swap extent forks"
|
|
|
|
echo "Format and mount fs"
|
|
_scratch_mkfs >> $seqres.full
|
|
_scratch_mount >> $seqres.full
|
|
|
|
bsize=$(_get_block_size $SCRATCH_MNT)
|
|
|
|
srcfile=${SCRATCH_MNT}/srcfile
|
|
donorfile=${SCRATCH_MNT}/donorfile
|
|
|
|
echo "Create \$donorfile having an extent of length 67 blocks"
|
|
$XFS_IO_PROG -f -s -c "pwrite -b $((17 * bsize)) 0 $((17 * bsize))" $donorfile \
|
|
>> $seqres.full
|
|
|
|
# After the for loop the donor file will have the following extent layout
|
|
# | 0-4 | 5 | 6 | 7 | 8 | 9 | 10 |
|
|
echo "Fragment \$donorfile"
|
|
for i in $(seq 5 10); do
|
|
start_offset=$((i * bsize))
|
|
$XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $donorfile >> $seqres.full
|
|
done
|
|
|
|
echo "Create \$srcfile having an extent of length 18 blocks"
|
|
$XFS_IO_PROG -f -s -c "pwrite -b $((18 * bsize)) 0 $((18 * bsize))" $srcfile \
|
|
>> $seqres.full
|
|
|
|
echo "Fragment \$srcfile"
|
|
# After the for loop the src file will have the following extent layout
|
|
# | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7-10 |
|
|
for i in $(seq 1 7); do
|
|
start_offset=$((i * bsize))
|
|
$XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $srcfile >> $seqres.full
|
|
done
|
|
|
|
echo "Collect \$donorfile's extent count"
|
|
donor_nr_exts=$(_xfs_get_fsxattr nextents $donorfile)
|
|
|
|
echo "Collect \$srcfile's extent count"
|
|
src_nr_exts=$(_xfs_get_fsxattr nextents $srcfile)
|
|
|
|
echo "Inject reduce_max_iextents error tag"
|
|
_scratch_inject_error reduce_max_iextents 1
|
|
|
|
echo "Swap \$srcfile's and \$donorfile's extent forks"
|
|
$XFS_IO_PROG -f -c "swapext $donorfile" $srcfile >> $seqres.full 2>&1
|
|
|
|
echo "Check for \$donorfile's extent count overflow"
|
|
nextents=$(_xfs_get_fsxattr nextents $donorfile)
|
|
|
|
if (( $nextents == $src_nr_exts )); then
|
|
echo "\$donorfile: Extent count overflow check failed"
|
|
fi
|
|
|
|
echo "Check for \$srcfile's extent count overflow"
|
|
nextents=$(_xfs_get_fsxattr nextents $srcfile)
|
|
|
|
if (( $nextents == $donor_nr_exts )); then
|
|
echo "\$srcfile: Extent count overflow check failed"
|
|
fi
|
|
|
|
# success, all done
|
|
status=0
|
|
exit
|