tests: Lower the expected amount of free space in ext filesystems

With e2fsprogs 1.47.4-1 there are some changes to calculating the
size of the orphan inode which makes the tests fail. We don't
really need to check the exact value, just make sure we return
something that makes sense.

Fixes: #1179

Author: vojtechtrefny

tests/fs_tests/ext_test.py

@@ -243,8 +243,8 @@ def _test_ext_get_info(self, mkfs_function, info_function):
         self.assertTrue(fi)
         self.assertEqual(fi.block_size, 1024)
         self.assertEqual(fi.block_count, self.loop_size / 1024)
-        # at least 90 % should be available, so it should be reported
-        self.assertGreater(fi.free_blocks, 0.90 * self.loop_size / 1024)
+        # at least 50 % should be available, so it should be reported
+        self.assertGreater(fi.free_blocks, 0.50 * self.loop_size / 1024)
         self.assertEqual(fi.label, "")
         # should be an non-empty string
         self.assertTrue(fi.uuid)
@@ -254,8 +254,8 @@ def _test_ext_get_info(self, mkfs_function, info_function):
             fi = BlockDev.fs_ext4_get_info(self.loop_devs[0])
             self.assertEqual(fi.block_size, 1024)
             self.assertEqual(fi.block_count, self.loop_size / 1024)
-            # at least 90 % should be available, so it should be reported
-            self.assertGreater(fi.free_blocks, 0.90 * self.loop_size / 1024)
+            # at least 50 % should be available, so it should be reported
+            self.assertGreater(fi.free_blocks, 0.50 * self.loop_size / 1024)
             self.assertEqual(fi.label, "")
             # should be an non-empty string
             self.assertTrue(fi.uuid)
@@ -344,8 +344,6 @@ def _test_ext_resize(self, mkfs_function, info_function, resize_function, minsiz
         self.assertTrue(fi)
         self.assertEqual(fi.block_size, 1024)
         self.assertEqual(fi.block_count, self.loop_size / 1024)
-        # at least 90 % should be available, so it should be reported
-        self.assertGreater(fi.free_blocks, 0.90 * self.loop_size / 1024)
 
         succ = resize_function(self.loop_devs[0], 50 * 1024**2, None)
         self.assertTrue(succ)
@@ -361,8 +359,6 @@ def _test_ext_resize(self, mkfs_function, info_function, resize_function, minsiz
         self.assertTrue(fi)
         self.assertEqual(fi.block_size, 1024)
         self.assertEqual(fi.block_count, self.loop_size / 1024)
-        # at least 90 % should be available, so it should be reported
-        self.assertGreater(fi.free_blocks, 0.90 * self.loop_size / 1024)
 
         # resize again
         succ = resize_function(self.loop_devs[0], 50 * 1024**2, None)
@@ -379,8 +375,6 @@ def _test_ext_resize(self, mkfs_function, info_function, resize_function, minsiz
         self.assertTrue(fi)
         self.assertEqual(fi.block_size, 1024)
         self.assertEqual(fi.block_count, self.loop_size / 1024)
-        # at least 90 % should be available, so it should be reported
-        self.assertGreater(fi.free_blocks, 0.90 * self.loop_size / 1024)
 
         # get min size and resize to it
         size = minsize_function(self.loop_devs[0])