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xfs: test running growfs on the realtime volume

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Make sure that we can run growfs to expand the realtime volume without
it blowing up.  This is a regression test for the following patches:

xfs: Set xfs_buf type flag when growing summary/bitmap files
xfs: Set xfs_buf's b_ops member when zeroing bitmap/summary files
xfs: fix realtime bitmap/summary file truncation when growing rt volume
xfs: make xfs_growfs_rt update secondary superblocks
xfs: annotate grabbing the realtime bitmap/summary locks in growfs

Because the xfs maintainer realized that no, we have no tests for this
particular piece of functionality.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Darrick J. Wong
2020-10-08 08:05:51 -07:00
committed by Eryu Guan
parent fce0f68a94
commit 6df280a684
3 changed files with 93 additions and 0 deletions
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tests/xfs/521
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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2020, Oracle and/or its affiliates. All Rights Reserved.
#
# FS QA Test No. 521
#
# Tests xfs_growfs on the realtime volume to make sure none of it blows up.
# This is a regression test for the following patches:
#
# xfs: Set xfs_buf type flag when growing summary/bitmap files
# xfs: Set xfs_buf's b_ops member when zeroing bitmap/summary files
# xfs: fix realtime bitmap/summary file truncation when growing rt volume
# xfs: make xfs_growfs_rt update secondary superblocks
# xfs: annotate grabbing the realtime bitmap/summary locks in growfs
#
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 /
_scratch_unmount >> $seqres.full 2>&1
test -e "$rtdev" && losetup -d $rtdev >> $seqres.full 2>&1
rm -f $tmp.* $TEST_DIR/$seq.rtvol
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
# real QA test starts here
_supported_fs xfs
# Note that we don't _require_realtime because we synthesize a rt volume
# below.
_require_scratch_nocheck
_require_no_large_scratch_dev
echo "Create fake rt volume"
truncate -s 400m $TEST_DIR/$seq.rtvol
rtdev=$(_create_loop_device $TEST_DIR/$seq.rtvol)
echo "Format and mount 100m rt volume"
export USE_EXTERNAL=yes
export SCRATCH_RTDEV=$rtdev
_scratch_mkfs -r size=100m > $seqres.full
_scratch_mount || _notrun "Could not mount scratch with synthetic rt volume"
testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir
echo "Check rt volume stats"
$XFS_IO_PROG -c 'chattr +t' $testdir
$XFS_INFO_PROG $SCRATCH_MNT >> $seqres.full
before=$(stat -f -c '%b' $testdir)
echo "Create some files"
_pwrite_byte 0x61 0 1m $testdir/original >> $seqres.full
echo "Grow fs"
$XFS_GROWFS_PROG $SCRATCH_MNT 2>&1 | _filter_growfs >> $seqres.full
_scratch_cycle_mount
echo "Recheck 400m rt volume stats"
$XFS_INFO_PROG $SCRATCH_MNT >> $seqres.full
after=$(stat -f -c '%b' $testdir)
_within_tolerance "rt volume size" $after $((before * 4)) 5% -v
echo "Create more copies to make sure the bitmap really works"
cp -p $testdir/original $testdir/copy3
echo "Check filesystem"
_check_xfs_filesystem $SCRATCH_DEV none $rtdev
# success, all done
status=0
exit