#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2020 Oracle, Inc.  All Rights Reserved.
#
# FS QA Test No. 755
#
# Race freeze and fsmap for a while to see if we crash or livelock.
#
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 7 15

_cleanup()
{
	cd /
	$XFS_IO_PROG -x -c 'thaw' $SCRATCH_MNT > /dev/null 2>&1
	rm -rf $tmp.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/fuzzy
. ./common/inject
. ./common/xfs

# real QA test starts here
_supported_os Linux
_supported_fs xfs
_require_xfs_scratch_rmapbt
_require_xfs_io_command "fsmap"
_require_command "$KILLALL_PROG" killall

echo "Format and populate"
_scratch_mkfs > "$seqres.full" 2>&1
_scratch_mount

STRESS_DIR="$SCRATCH_MNT/testdir"
mkdir -p $STRESS_DIR

for i in $(seq 0 9); do
	mkdir -p $STRESS_DIR/$i
	for j in $(seq 0 9); do
		mkdir -p $STRESS_DIR/$i/$j
		for k in $(seq 0 9); do
			echo x > $STRESS_DIR/$i/$j/$k
		done
	done
done

cpus=$(( $(src/feature -o) * 4 * LOAD_FACTOR))

echo "Concurrent fsmap and freeze"
filter_output() {
	egrep -v '(Device or resource busy|Invalid argument)'
}
freeze_loop() {
	end="$1"

	while [ "$(date +%s)" -lt $end ]; do
		$XFS_IO_PROG -x -c 'freeze' $SCRATCH_MNT 2>&1 | filter_output
		$XFS_IO_PROG -x -c 'thaw' $SCRATCH_MNT 2>&1 | filter_output
	done
}
fsmap_loop() {
	end="$1"

	while [ "$(date +%s)" -lt $end ]; do
		$XFS_IO_PROG -c 'fsmap -v' $SCRATCH_MNT > /dev/null
	done
}
stress_loop() {
	end="$1"

	FSSTRESS_ARGS=$(_scale_fsstress_args -p 4 -d $SCRATCH_MNT -n 2000 $FSSTRESS_AVOID)
	while [ "$(date +%s)" -lt $end ]; do
		$FSSTRESS_PROG $FSSTRESS_ARGS >> $seqres.full
	done
}

start=$(date +%s)
end=$((start + (30 * TIME_FACTOR) ))

echo "Loop started at $(date --date="@${start}"), ending at $(date --date="@${end}")" >> $seqres.full
stress_loop $end &
freeze_loop $end &
fsmap_loop $end &

# Wait until 2 seconds after the loops should have finished...
while [ "$(date +%s)" -lt $((end + 2)) ]; do
	sleep 1
done

# ...and clean up after the loops in case they didn't do it themselves.
$KILLALL_PROG -TERM xfs_io fsstress >> $seqres.full 2>&1
$XFS_IO_PROG -x -c 'thaw' $SCRATCH_MNT >> $seqres.full 2>&1

echo "Loop finished at $(date)" >> $seqres.full
echo "Test done"

# success, all done
status=0
exit