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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
#
# FS QA Test No. 298
#
# See how well reflink handles SIGKILL in the middle of a slow reflink.
#
. ./common/preamble
_begin_fstest auto clone
# Override the default cleanup function.
_cleanup()
{
cd /
rm -rf $tmp.* $TEST_DIR/before $TEST_DIR/after
}
# Import common functions.
. ./common/filter
. ./common/attr
. ./common/reflink
# real QA test starts here
_require_scratch_reflink
_require_cp_reflink
_require_command "$TIMEOUT_PROG" "timeout"
test $FSTYP == "nfs" && _notrun "NFS can't interrupt clone operations"
echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir
echo "Create a one block file"
blksz="$(_get_block_size $testdir)"
_pwrite_byte 0x61 0 $blksz $testdir/file1 >> $seqres.full
fnr=26 # 2^26 reflink extents should be enough to find a slow op?
timeout=8 # guarantee a good long run...
echo "Find a reflink size that takes a long time"
for i in $(seq 0 $fnr); do
echo " ++ Reflink size $i, $((2 ** i)) blocks" >> $seqres.full
n=$(( (2 ** i) * blksz))
touch $TEST_DIR/before
$XFS_IO_PROG -f -c "reflink $testdir/file1 0 $n $n" $testdir/file1 >> $seqres.full 2>&1
touch $TEST_DIR/after
before=$(stat -c '%Y' $TEST_DIR/before)
after=$(stat -c '%Y' $TEST_DIR/after)
delta=$((after - before))
test $delta -gt $timeout && break
done
echo "Try to kill reflink after a shorter period of time"
kill_after=2 # give us a shorter time to die
n=$(_get_filesize $testdir/file1)
echo "performing kill test on $n bytes..." >> $seqres.full
touch $TEST_DIR/before
urk=$($TIMEOUT_PROG -s KILL ${kill_after}s $XFS_IO_PROG -f -c "reflink $testdir/file1 0 $n $n" $testdir/file1 >> $seqres.full 2>&1)
touch $TEST_DIR/after
before=$(stat -c '%Y' $TEST_DIR/before)
after=$(stat -c '%Y' $TEST_DIR/after)
delta=$((after - before))
echo "reflink of $n bytes took $delta seconds" >> $seqres.full
test $delta -gt $timeout && _fail "reflink didn't stop in time, n=$n t=$delta"
echo "Check scratch fs"
sleep 2 # give it a few seconds to actually die...
# success, all done
status=0
exit
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