xfs: test getfsmap ioctl

Add some simple tests for the new getfsmap ioctl.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>

tests/xfs/275

@@ -0,0 +1,68 @@
+#! /bin/bash
+# FS QA Test No. 275
+#
+# Check that getfsmap reports external log devices
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2016, Oracle and/or its affiliates.  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  02110-1301  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 15
+
+_cleanup()
+{
+	cd /
+	rm -rf "$tmp".* $TEST_DIR/fsmap $TEST_DIR/testout
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_os Linux
+_supported_fs xfs
+_require_scratch
+_require_xfs_io_command "fsmap"
+if [ "$USE_EXTERNAL" != "yes" ] || [ -z "$SCRATCH_LOGDEV" ]; then
+	_notrun "Need external log device"
+fi
+
+rm -f "$seqres.full"
+
+echo "Format and mount"
+_scratch_mkfs > "$seqres.full" 2>&1
+_scratch_mount
+
+echo "Get fsmap" | tee -a $seqres.full
+$XFS_IO_PROG -c 'fsmap -v' $SCRATCH_MNT >> $seqres.full
+$XFS_IO_PROG -c 'fsmap -v' $SCRATCH_MNT | tr '[]()' '    ' > $TEST_DIR/fsmap
+
+echo "Check device field of FS metadata and journalling log"
+data_dev=$(grep 'static fs metadata' $TEST_DIR/fsmap | head -n 1 | awk '{print $2}')
+journal_dev=$(grep 'journalling log' $TEST_DIR/fsmap | head -n 1 | awk '{print $2}')
+test "${data_dev}" != "${journal_dev}" || echo "data ${data_dev} journal ${journal_dev}?"
+
+# success, all done
+status=0
+exit