#! /bin/bash
# FS QA Test No. 422
#
# Race freeze and rmapbt repair for a while to see if we crash or livelock.
# rmapbt repair requires us to freeze the filesystem to stop all filesystem
# activity, so we can't have userspace wandering in and thawing it.
#
#-----------------------------------------------------------------------
# Copyright (c) 2017 Oracle, Inc.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1335  USA
#-----------------------------------------------------------------------
#

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 /
	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 "scrub"
_require_xfs_io_error_injection "force_repair"

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 repair"
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' -c 'thaw' $SCRATCH_MNT 2>&1 | filter_output
	done
}
repair_loop() {
	end="$1"

	while [ "$(date +%s)" -lt $end ]; do
		$XFS_IO_PROG -x -c 'repair rmapbt 0' -c 'repair rmapbt 1' $SCRATCH_MNT 2>&1 | filter_output
	done
}
$XFS_IO_PROG -x -c 'inject force_repair' $SCRATCH_MNT

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

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

while [ "$(date +%s)" -lt $end ]; do
	sleep 1
done
echo "Loop finished at $(date)" >> $seqres.full
echo "Test done"

# success, all done
status=0
exit