tests: various fixes

Author: gsmolk

tests/archive.py

@@ -2279,7 +2279,7 @@ def test_archive_get_prefetch_corruption(self):
         # generate WAL, copy it into prefetch directory, then corrupt
         # some segment
         node.pgbench_init(scale=20)
-        sleep(10)
+        sleep(20)
 
         # now copy WAL files into prefetch directory and corrupt some of them
         archive_dir = os.path.join(backup_dir, 'wal', 'node')

tests/backup.py

@@ -1348,7 +1348,8 @@ def test_drop_rel_during_backup_page(self):
         node = self.make_simple_node(
             base_dir=os.path.join(module_name, fname, 'node'),
             set_replication=True,
-            initdb_params=['--data-checksums'])
+            initdb_params=['--data-checksums'],
+            pg_options={'autovacuum': 'off'})
 
         self.init_pb(backup_dir)
         self.add_instance(backup_dir, 'node', node)

tests/set_backup.py

@@ -392,6 +392,7 @@ def test_add_note_newlines(self):
         fname = self.id().split('.')[3]
         node = self.make_simple_node(
             base_dir=os.path.join(module_name, fname, 'node'),
+            set_replication=True,
             initdb_params=['--data-checksums'])
 
         backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')