xfs: test mkfs min log size calculation w/ rt volumes

In "mkfs: set required parts of the realtime geometry before computing
log geometry" we made sure that mkfs set up enough of the fs geometry to
compute the minimum xfs log size correctly when formatting the
filesystem.  This is the regression test for that issue.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

tests/xfs/143

@@ -0,0 +1,46 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2021 Oracle.  All Rights Reserved.
+#
+# FS QA Test No. 143
+#
+# Make sure mkfs sets up enough of the rt geometry that we can compute the
+# correct min log size for formatting the fs.
+#
+# This is a regression test for the xfsprogs commit 31409f48 ("mkfs: set
+# required parts of the realtime geometry before computing log geometry").
+
+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 -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs xfs
+_require_scratch
+_require_realtime
+
+rm -f $seqres.full
+
+# Format a tiny filesystem to force minimum log size, then see if it mounts
+_scratch_mkfs -r size=1m -d size=100m > $seqres.full
+_scratch_mount >> $seqres.full
+echo "Silence is golden"
+
+# success, all done
+status=0
+exit

tests/xfs/143.out

@@ -0,0 +1,2 @@
+QA output created by 143
+Silence is golden

tests/xfs/group

@@ -140,6 +140,7 @@
 140 auto clone
 141 auto log metadata
 142 auto quick rw attr realtime
+143 auto quick realtime mount
 148 auto quick fuzzers
 149 auto quick growfs
 164 rw pattern auto prealloc quick