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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Oracle, Inc. All Rights Reserved.
#
# FS QA Test No. 333
#
# Test for races or FS corruption when trying to hit ENOSPC while DIO writing
# to a file that's also the source of a reflink operation.
#
. ./common/preamble
_begin_fstest auto clone
_register_cleanup "_cleanup" BUS
# Override the default cleanup function.
_cleanup()
{
cd /
# rm -rf $tmp.* $finished_file $abort_file
wait
}
# Import common functions.
. ./common/filter
. ./common/reflink
# real QA test starts here
_require_scratch_reflink
_require_cp_reflink
_require_odirect
echo "Format and mount"
_scratch_mkfs_sized $((400 * 1048576)) > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
testdir=$SCRATCH_MNT/test-$seq
finished_file=/tmp/finished
rm -rf $finished_file
abort_file=/tmp/abort
rm -rf $abort_file
mkdir $testdir
loops=1024
nr_loops=$((loops - 1))
blksz=65536
echo "Initialize file"
echo >> $seqres.full
_pwrite_byte 0x61 0 $((loops * blksz)) $testdir/file1 >> $seqres.full
_scratch_cycle_mount
# Snapshot creator...
snappy() {
n=0
while [ ! -e $finished_file ]; do
out="$(_cp_reflink $testdir/file1 $testdir/snap_$n 2>&1)"
res=$?
if echo $out | grep -q "No space left"; then
echo $out > $abort_file
break
fi
test -n "$out" && echo $out
if [[ $res -ne 0 ]]; then
echo $res > $abort_file
break
fi
n=$((n + 1))
done
}
echo "Snapshot a file undergoing directio rewrite"
snappy &
seq 1 1000 | while read j; do
seq $nr_loops -1 0 | while read i; do
out="$(_pwrite_byte 0x63 $((i * blksz)) $blksz -d $testdir/file1 2>&1)"
echo $out >> $seqres.full
echo $out | grep -q "No space left" && touch $abort_file
echo $out | grep -qi "error" && touch $abort_file
test -e $abort_file && break
done
test -e $abort_file && break
done
touch $finished_file
wait
df -h /mnt/scratch
# success, all done
status=0
exit
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