tests/generic/537

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2019, Oracle and/or its affiliates.  All Rights Reserved.
#
# FS QA Test No. 537
#
# Ensure that we can't call fstrim on filesystems mounted norecovery, because
# FSTRIM implementations use free space metadata to drive the discard requests
# and we told the filesystem not to make sure the metadata are up to date.
#
# The following patches fixed the bug on ext4, xfs and btrfs
# ext4: prohibit fstrim in norecovery mode
# xfs: prohibit fstrim in norecovery mode
# Btrfs: do not allow trimming when a fs is mounted with the nologreplay option

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 15

_cleanup()
{
	cd /
	rm -rf $tmp.*
}

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

# real QA test starts here
_supported_fs generic
_require_scratch
_require_fstrim

rm -f $seqres.full

_scratch_mkfs > $seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV

echo "fstrim on regular mount"
_scratch_mount >> $seqres.full 2>&1
$FSTRIM_PROG -v $SCRATCH_MNT >> $seqres.full 2>&1 || \
	_notrun "FSTRIM not supported"
_scratch_unmount

echo "fstrim on ro mount"
_scratch_mount -o ro >> $seqres.full 2>&1
$FSTRIM_PROG -v $SCRATCH_MNT >> $seqres.full 2>&1
_scratch_unmount

echo "fstrim on ro mount with no log replay"
norecovery="norecovery"
test $FSTYP = "btrfs" && norecovery=nologreplay
_scratch_mount -o ro,$norecovery >> $seqres.full 2>&1
$FSTRIM_PROG -v $SCRATCH_MNT >> $seqres.full 2>&1 && \
	echo "fstrim with unrecovered metadata just ate your filesystem"
_scratch_unmount

# success, all done
status=0
exit