btrfs-progs: tests: mkfs, check sectorsize and nodesize combinations

Add mkfs selftest for invalid and valid sectorsize/nodesize
combinations.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[ switched to TEST_DEV ]
Signed-off-by: David Sterba <dsterba@suse.com>

tests/mkfs-tests/008-secorsize-nodesize-combination/test.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+# test various sectorsize and node size combinations
+# including valid and invalid ones
+# only do mkfs and fsck check, no mounting as
+# sub/multi-pagesize is not supported yet
+
+source $TOP/tests/common
+
+check_prereq mkfs.btrfs
+check_prereq btrfs
+prepare_test_dev
+
+# disable mixed bg to avoid sectorsize == nodesize check
+features="^mixed-bg"
+
+# caller need to check whether the combination is valid
+do_test()
+{
+	sectorsize=$1
+	nodesize=$2
+	run_mayfail $TOP/mkfs.btrfs -O $features -n $nodesize -s $sectorsize \
+		$TEST_DEV
+	ret=$?
+	if [ $ret == 0 ]; then
+		run_check $TOP/btrfs check $TEST_DEV
+	fi
+	return $ret
+}
+
+# Invalid: Unaligned sectorsize and nodesize
+do_test 8191 8191 && _fail
+
+# Invalid: Aligned sectorsize with unaligned nodesize
+do_test 4k 16385 && _fail
+
+# Invalid: Ungliend sectorsize with aligned nodesize
+do_test 8191 16k && _fail
+
+# Valid: Aligned sectorsize and nodesize
+do_test 4k 16k || _fail
+
+# Invalid: Sectorsize larger than nodesize
+do_test 8k 4k && _fail
+
+# Invalid: too large nodesize
+do_test 16k 128k && _fail
+
+# Valid: large sectorsize
+do_test 64k 64k || _fail