btrfs-progs: tests: add basic test for ntrfs conversion

The ntfs2btrfs tool recently found a bug in 'check', add the conversion
test support to our testsuite. It's optional and depends on kernel
support of the 'ntfs3' driver and the availability of mkntfs and
ntfs2btrfs, which might not be available everywhere.

Signed-off-by: David Sterba <dsterba@suse.com>

tests/common.convert

@@ -83,6 +83,8 @@ convert_test_prep_fs() {
 	reiserfs)
 		force=-ff
 		mountopts="-o acl,user_xattr,attrs" ;;
+	ntfs)
+		force=-F ;;
 	*)
 		_fail "unknown filesystem to convert: $fstype"
 	esac
@@ -235,6 +237,7 @@ convert_test_post_rollback() {
 	case "$1" in
 		ext[234]) types=ext2,ext3,ext4 ;;
 		reiserfs) types=reiserfs ;;
+		ntfs) types=ntfs ;;
 		*) _fail "unknown filesystem type to check: $1" ;;
 	esac
 
@@ -295,3 +298,18 @@ check_kernel_support_reiserfs()
 	fi
 	return 0
 }
+
+load_module_ntfs()
+{
+	# Load NTFS3 that has write support
+	$SUDO_HELPER modprobe ntfs3
+}
+
+check_kernel_support_ntfs()
+{
+	if ! grep -iq 'ntfs' /proc/filesystems; then
+		echo "WARNING: ntfs filesystem not listed in /proc/filesystems, some tests might be skipped"
+		return 1
+	fi
+	return 0
+}

tests/convert-tests/024-ntfs-basic/test.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Really basic test of ntfs2btrfs conversion
+
+source "$TEST_TOP/common" || exit
+source "$TEST_TOP/common.convert" || exit
+
+if ! check_kernel_support_ntfs >/dev/null; then
+	_not_run "no NTFS support"
+fi
+
+check_prereq btrfs-convert
+check_global_prereq mkfs.ntfs
+check_global_prereq ntfs2btrfs
+
+setup_root_helper
+prepare_test_dev
+
+# Iterate over defaults and options that are not tied to hardware capabilities
+# or number of devices. Test only 4K block size as minimum.
+for feature in '' 'block-group-tree' ; do
+	convert_test ntfs "$feature" "ntfs 4k nodesize" 4096 mkfs.ntfs -s 4096
+done