tests/generic/390

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat, Inc.  All Rights Reserved.
#
# FS QA Test 390
#
# Multi-threads freeze/unfreeze testing. This's a stress test case,
# it won't do functional check.
#
. ./common/preamble
_begin_fstest auto freeze stress

# Override the default cleanup function.
_cleanup()
{
	cd /
	# Kill freeze loops and make sure $SCRATCH_MNT is unfreezed
	[ -n "$freeze_pids" ] && kill -9 $freeze_pids 2>/dev/null
	wait $freeze_pids
	xfs_freeze -u $SCRATCH_MNT 2>/dev/null
	_kill_fsstress
	rm -f $tmp.*
}

# Import common functions.
. ./common/filter

echo "Silence is golden"

# Modify as appropriate.
_require_scratch
_require_freeze
_require_test_program "feature"

_scratch_mkfs >>$seqres.full 2>&1
# We don't want to freeze/unfreeze root fs if mount scratch dev failed
_scratch_mount

num_cpus=`$here/src/feature -o`

# Start fsstress in background
procs=$num_cpus
if [ $procs -gt 20 ]; then
	procs=20
elif [ $procs -le 1 ]; then
	procs=2
fi
nops=1000
stress_dir="$SCRATCH_MNT/fsstress_test_dir"
mkdir "$stress_dir"
fsstress_args=`_scale_fsstress_args -d $stress_dir -p $procs -n $nops`
_run_fsstress_bg $fsstress_args

# Start multi-threads freeze/unfreeze
for ((i=0; i<$procs; i++)); do
	while kill -0 $fsstress_pid 2>/dev/null; do
		xfs_freeze -f $SCRATCH_MNT 2>/dev/null
		xfs_freeze -u $SCRATCH_MNT 2>/dev/null
	done &
	freeze_pids="$! $freeze_pids"
done

_wait_for_fsstress
result=$?
wait $freeze_pids
unset freeze_pids

# Exit with fsstress return value
status=$result
exit