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Wong > Signed-off-by: Chandan Babu R Makes sense. The extent illustrations help Reviewed-by: Allison Henderson > --- > tests/xfs/536 | 105 ++++++++++++++++++++++++++++++++++++++++++++++ > tests/xfs/536.out | 13 ++++++ > tests/xfs/group | 1 + > 3 files changed, 119 insertions(+) > create mode 100755 tests/xfs/536 > create mode 100644 tests/xfs/536.out > > diff --git a/tests/xfs/536 b/tests/xfs/536 > new file mode 100755 > index 00000000..9bb4094a > --- /dev/null > +++ b/tests/xfs/536 > @@ -0,0 +1,105 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# Copyright (c) 2021 Chandan Babu R. All Rights Reserved. > +# > +# FS QA Test 536 > +# > +# 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 > diff --git a/tests/xfs/536.out b/tests/xfs/536.out > new file mode 100644 > index 00000000..f550aa1e > --- /dev/null > +++ b/tests/xfs/536.out > @@ -0,0 +1,13 @@ > +QA output created by 536 > +* Swap extent forks > +Format and mount fs > +Create $donorfile having an extent of length 67 blocks > +Fragment $donorfile > +Create $srcfile having an extent of length 18 blocks > +Fragment $srcfile > +Collect $donorfile's extent count > +Collect $srcfile's extent count > +Inject reduce_max_iextents error tag > +Swap $srcfile's and $donorfile's extent forks > +Check for $donorfile's extent count overflow > +Check for $srcfile's extent count overflow > diff --git a/tests/xfs/group b/tests/xfs/group > index aed06494..ba674a58 100644 > --- a/tests/xfs/group > +++ b/tests/xfs/group > @@ -533,3 +533,4 @@ > 533 auto quick > 534 auto quick reflink > 535 auto quick reflink > +536 auto quick >