tests/btrfs/197

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2019 Oracle.  All Rights Reserved.
#
# FS QA Test 197
#
# Test stale and alien btrfs-device in the fs devices list.
#  Bug fixed in the kernel patch:
#   btrfs: include non-missing as a qualifier for the latest_bdev
#   btrfs: remove identified alien btrfs device in open_fs_devices
#
. ./common/preamble
_begin_fstest auto quick volume

# Override the default cleanup function.
_cleanup()
{
	$UMOUNT_PROG $TEST_DIR/$seq.mnt >/dev/null 2>&1
	rm -rf $TEST_DIR/$seq.mnt
	cd /
	rm -f $tmp.*
}

. ./common/filter.btrfs

_require_test
_require_scratch
_require_scratch_dev_pool 5
# We require at least one raid setup, raid1 is the easiest, use this to gate on
# wether or not we run this test
_require_btrfs_raid_type raid1

workout()
{
	raid=$1
	device_nr=$2

	if ! _check_btrfs_raid_type $raid; then
		echo "$raid isn't supported, skipping" >> $seqres.full
		return
	fi

	echo $raid >> $seqres.full
	_scratch_dev_pool_get $device_nr
	_spare_dev_get

	_mkfs_dev $SPARE_DEV
	mkdir -p $TEST_DIR/$seq.mnt
	_mount $SPARE_DEV $TEST_DIR/$seq.mnt

	_scratch_pool_mkfs "-d$raid -m$raid" >> $seqres.full 2>&1 || \
							_fail "mkfs failed"

	# Make device # 2 an alien btrfs device for the raid created above by
	# adding it to the $TEST_DIR/$seq.mnt

	# don't test with the first device as auto fs check (_check_scratch_fs)
	# picks the first device
	$BTRFS_UTIL_PROG device add -f "${SCRATCH_DEV_NAME[1]}" "$TEST_DIR/$seq.mnt" >> \
		$seqres.full

	_mount -o degraded ${SCRATCH_DEV_NAME[0]} $SCRATCH_MNT
	# Check if missing device is reported as in the .out
	$BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | \
		_filter_btrfs_filesystem_show > $tmp.output 2>&1
	cat $tmp.output >> $seqres.full
	grep -q "${SCRATCH_DEV_NAME[1]}" $tmp.output && _fail "found stale device"

	$BTRFS_UTIL_PROG device remove "${SCRATCH_DEV_NAME[1]}" "$TEST_DIR/$seq.mnt"
	$UMOUNT_PROG $TEST_DIR/$seq.mnt
	_scratch_unmount
	_spare_dev_put
	_scratch_dev_pool_put
}

workout "raid1" "2"
workout "raid5" "3"
workout "raid6" "4"
workout "raid10" "4"

# success, all done
echo "Silence is golden"
status=0
exit