pg_probackup/tests/compatibility.py

import unittest
import subprocess
import os
from .helpers.ptrack_helpers import ProbackupTest, ProbackupException
from sys import exit
import shutil

module_name = 'compatibility'


class CompatibilityTest(ProbackupTest, unittest.TestCase):

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_page(self):
        """Description in jira issue PGPRO-434"""
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={
                'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.show_pb(backup_dir)

        self.add_instance(backup_dir, 'node', node, old_binary=True)
        self.show_pb(backup_dir)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=10)

        # FULL backup with old binary
        self.backup_node(
            backup_dir, 'node', node, old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        self.show_pb(backup_dir)

        self.validate_pb(backup_dir)

        # RESTORE old FULL with new binary
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        node_restored.cleanup()

        self.restore_node(
                backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Page BACKUP with old binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "20"]
        )
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node, backup_type='page',
            old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Page BACKUP with new binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "20"])

        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node, backup_type='page')

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        node.safe_psql(
            'postgres',
            'create table tmp as select * from pgbench_accounts where aid < 1000')

        node.safe_psql(
            'postgres',
            'delete from pgbench_accounts')

        node.safe_psql(
            'postgres',
            'VACUUM')

        self.backup_node(backup_dir, 'node', node, backup_type='page')

        pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        node.safe_psql(
            'postgres',
            'insert into pgbench_accounts select * from pgbench_accounts')

        self.backup_node(backup_dir, 'node', node, backup_type='page')

        pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_delta(self):
        """Description in jira issue PGPRO-434"""
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.show_pb(backup_dir)

        self.add_instance(backup_dir, 'node', node, old_binary=True)
        self.show_pb(backup_dir)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=10)

        # FULL backup with old binary
        self.backup_node(
            backup_dir, 'node', node, old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        self.show_pb(backup_dir)

        self.validate_pb(backup_dir)

        # RESTORE old FULL with new binary
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Delta BACKUP with old binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "20"]
        )
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node, backup_type='delta',
            old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Delta BACKUP with new binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "20"]
        )
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(backup_dir, 'node', node, backup_type='delta')

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        node.safe_psql(
            'postgres',
            'create table tmp as select * from pgbench_accounts where aid < 1000')

        node.safe_psql(
            'postgres',
            'delete from pgbench_accounts')

        node.safe_psql(
            'postgres',
            'VACUUM')

        self.backup_node(backup_dir, 'node', node, backup_type='delta')

        pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        node.safe_psql(
            'postgres',
            'insert into pgbench_accounts select * from pgbench_accounts')

        self.backup_node(backup_dir, 'node', node, backup_type='delta')

        pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_ptrack(self):
        """Description in jira issue PGPRO-434"""

        if not self.ptrack:
            return unittest.skip('Skipped because ptrack support is disabled')

        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            ptrack_enable=True,
            initdb_params=['--data-checksums'],
            pg_options={
                'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.show_pb(backup_dir)

        self.add_instance(backup_dir, 'node', node, old_binary=True)
        self.show_pb(backup_dir)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        if node.major_version >= 12:
            node.safe_psql(
                "postgres",
                "CREATE EXTENSION ptrack")

        node.pgbench_init(scale=10)

        # FULL backup with old binary
        self.backup_node(
            backup_dir, 'node', node, old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        self.show_pb(backup_dir)

        self.validate_pb(backup_dir)

        # RESTORE old FULL with new binary
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # ptrack BACKUP with old binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "20"]
        )
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node, backup_type='ptrack',
            old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored,
            options=[
                "-j", "4",
                "--recovery-target=latest",
                "--recovery-target-action=promote"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Ptrack BACKUP with new binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "20"]
        )
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node, backup_type='ptrack')

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            options=[
                "-j", "4",
                "--recovery-target=latest",
                "--recovery-target-action=promote"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_compression(self):
        """Description in jira issue PGPRO-434"""
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={
                'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=10)

        # FULL backup with OLD binary
        backup_id = self.backup_node(
            backup_dir, 'node', node,
            old_binary=True,
            options=['--compress'])

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        # restore OLD FULL with new binary
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        node_restored.cleanup()

        self.restore_node(
                backup_dir, 'node', node_restored,
                options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # PAGE backup with OLD binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "10"])
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node,
            backup_type='page',
            old_binary=True,
            options=['--compress'])

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored,
            options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # PAGE backup with new binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "10"])
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node,
            backup_type='page',
            options=['--compress'])

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Delta backup with old binary
        self.delete_pb(backup_dir, 'node', backup_id)

        self.backup_node(
            backup_dir, 'node', node,
            old_binary=True,
            options=['--compress'])

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "10"])

        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node,
            backup_type='delta',
            options=['--compress'],
            old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Delta backup with new binary
        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "4", "-T", "10"])

        pgbench.wait()
        pgbench.stdout.close()

        self.backup_node(
            backup_dir, 'node', node,
            backup_type='delta',
            options=['--compress'])

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_merge(self):
        """
        Create node, take FULL and PAGE backups with old binary,
        merge them with new binary
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={
                'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        # FULL backup with OLD binary
        self.backup_node(
            backup_dir, 'node', node,
            old_binary=True)

        node.pgbench_init(scale=1)

        # PAGE backup with OLD binary
        backup_id = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True)

        if self.paranoia:
            pgdata = self.pgdata_content(node.data_dir)

        self.merge_backup(backup_dir, "node", backup_id)

        self.show_pb(backup_dir, as_text=True, as_json=False)

        # restore OLD FULL with new binary
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored, options=["-j", "4"])

        if self.paranoia:
            pgdata_restored = self.pgdata_content(node_restored.data_dir)
            self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_merge_1(self):
        """
        Create node, take FULL and PAGE backups with old binary,
        merge them with new binary.
        old binary version =< 2.2.7
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=20)

        # FULL backup with OLD binary
        self.backup_node(backup_dir, 'node', node, old_binary=True)

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "10", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE1 backup with OLD binary
        self.backup_node(
            backup_dir, 'node', node, backup_type='page', old_binary=True)

        node.safe_psql(
            'postgres',
            'DELETE from pgbench_accounts')

        node.safe_psql(
            'postgres',
            'VACUUM pgbench_accounts')

        # PAGE2 backup with OLD binary
        backup_id = self.backup_node(
            backup_dir, 'node', node, backup_type='page', old_binary=True)

        pgdata = self.pgdata_content(node.data_dir)

        # merge chain created by old binary with new binary
        output = self.merge_backup(backup_dir, "node", backup_id)

        # check that in-place is disabled
        self.assertIn(
            "WARNING: In-place merge is disabled "
            "because of program versions mismatch", output)

        # restore merged backup
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))
        node_restored.cleanup()

        self.restore_node(backup_dir, 'node', node_restored)

        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_merge_2(self):
        """
        Create node, take FULL and PAGE backups with old binary,
        merge them with new binary.
        old binary version =< 2.2.7
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=50)

        node.safe_psql(
            'postgres',
            'VACUUM pgbench_accounts')

        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        # FULL backup with OLD binary
        self.backup_node(backup_dir, 'node', node, old_binary=True)

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "10", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE1 backup with OLD binary
        page1 = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True)

        pgdata1 = self.pgdata_content(node.data_dir)

        node.safe_psql(
            'postgres',
            "DELETE from pgbench_accounts where ctid > '(10,1)'")

        # PAGE2 backup with OLD binary
        page2 = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True)

        pgdata2 = self.pgdata_content(node.data_dir)

        # PAGE3 backup with OLD binary
        page3 = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True)

        pgdata3 = self.pgdata_content(node.data_dir)

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "10", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE4 backup with NEW binary
        page4 = self.backup_node(
            backup_dir, 'node', node, backup_type='page')
        pgdata4 = self.pgdata_content(node.data_dir)

        # merge backups one by one and check data correctness
        # merge PAGE1
        self.merge_backup(
            backup_dir, "node", page1, options=['--log-level-file=VERBOSE'])

        # check data correctness for PAGE1
        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, backup_id=page1,
            options=['--log-level-file=VERBOSE'])
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata1, pgdata_restored)

        # merge PAGE2
        self.merge_backup(backup_dir, "node", page2)

        # check data correctness for PAGE2
        node_restored.cleanup()
        self.restore_node(backup_dir, 'node', node_restored, backup_id=page2)
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata2, pgdata_restored)

        # merge PAGE3
        self.show_pb(backup_dir, 'node', page3)
        self.merge_backup(backup_dir, "node", page3)
        self.show_pb(backup_dir, 'node', page3)

        # check data correctness for PAGE3
        node_restored.cleanup()
        self.restore_node(backup_dir, 'node', node_restored, backup_id=page3)
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata3, pgdata_restored)

        # merge PAGE4
        self.merge_backup(backup_dir, "node", page4)

        # check data correctness for PAGE4
        node_restored.cleanup()
        self.restore_node(backup_dir, 'node', node_restored, backup_id=page4)
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata4, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_merge_3(self):
        """
        Create node, take FULL and PAGE backups with old binary,
        merge them with new binary.
        old binary version =< 2.2.7
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=50)

        node.safe_psql(
            'postgres',
            'VACUUM pgbench_accounts')

        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        # FULL backup with OLD binary
        self.backup_node(
            backup_dir, 'node', node, old_binary=True, options=['--compress'])

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "10", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE1 backup with OLD binary
        page1 = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True, options=['--compress'])

        pgdata1 = self.pgdata_content(node.data_dir)

        node.safe_psql(
            'postgres',
            "DELETE from pgbench_accounts where ctid > '(10,1)'")

        # PAGE2 backup with OLD binary
        page2 = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True, options=['--compress'])

        pgdata2 = self.pgdata_content(node.data_dir)

        # PAGE3 backup with OLD binary
        page3 = self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', old_binary=True, options=['--compress'])

        pgdata3 = self.pgdata_content(node.data_dir)

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "10", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE4 backup with NEW binary
        page4 = self.backup_node(
            backup_dir, 'node', node, backup_type='page', options=['--compress'])
        pgdata4 = self.pgdata_content(node.data_dir)

        # merge backups one by one and check data correctness
        # merge PAGE1
        self.merge_backup(
            backup_dir, "node", page1, options=['--log-level-file=VERBOSE'])

        # check data correctness for PAGE1
        node_restored.cleanup()
        self.restore_node(
            backup_dir, 'node', node_restored, backup_id=page1,
            options=['--log-level-file=VERBOSE'])
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata1, pgdata_restored)

        # merge PAGE2
        self.merge_backup(backup_dir, "node", page2)

        # check data correctness for PAGE2
        node_restored.cleanup()
        self.restore_node(backup_dir, 'node', node_restored, backup_id=page2)
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata2, pgdata_restored)

        # merge PAGE3
        self.show_pb(backup_dir, 'node', page3)
        self.merge_backup(backup_dir, "node", page3)
        self.show_pb(backup_dir, 'node', page3)

        # check data correctness for PAGE3
        node_restored.cleanup()
        self.restore_node(backup_dir, 'node', node_restored, backup_id=page3)
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata3, pgdata_restored)

        # merge PAGE4
        self.merge_backup(backup_dir, "node", page4)

        # check data correctness for PAGE4
        node_restored.cleanup()
        self.restore_node(backup_dir, 'node', node_restored, backup_id=page4)
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata4, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_merge_4(self):
        """
        Start merge between minor version, crash and retry it.
        old binary version =< 2.4.0
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=20)

        node.safe_psql(
            'postgres',
            'VACUUM pgbench_accounts')

        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))

        # FULL backup with OLD binary
        self.backup_node(
            backup_dir, 'node', node, old_binary=True, options=['--compress'])

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "20", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE backup with NEW binary
        page_id = self.backup_node(
            backup_dir, 'node', node, backup_type='page', options=['--compress'])
        pgdata = self.pgdata_content(node.data_dir)

        # merge PAGE4
        gdb = self.merge_backup(backup_dir, "node", page_id, gdb=True)

        gdb.set_breakpoint('rename')
        gdb.run_until_break()
        gdb.continue_execution_until_break(500)
        gdb._execute('signal SIGKILL')

        try:
            self.merge_backup(backup_dir, "node", page_id)
            self.assertEqual(
                1, 0,
                "Expecting Error because of format changes.\n "
                "Output: {0} \n CMD: {1}".format(
                    repr(self.output), self.cmd))
        except ProbackupException as e:
            self.assertIn(
                "ERROR: Retry of failed merge for backups with different "
                "between minor versions is forbidden to avoid data corruption "
                "because of storage format changes introduced in 2.4.0 version, "
                "please take a new full backup",
                e.message,
                '\n Unexpected Error Message: {0}\n CMD: {1}'.format(
                    repr(e.message), self.cmd))

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.expectedFailure
    # @unittest.skip("skip")
    def test_backward_compatibility_merge_5(self):
        """
        Create node, take FULL and PAGE backups with old binary,
        merge them with new binary.
        old binary version >= STORAGE_FORMAT_VERSION (2.4.4)
        """

        if self.version_to_num(self.old_probackup_version) < self.version_to_num('2.4.4'):
            return unittest.skip('OLD pg_probackup binary must be == 2.4.4 for this test')

        self.assertNotEqual(
            self.version_to_num(self.old_probackup_version),
            self.version_to_num(self.probackup_version))

        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)

        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.pgbench_init(scale=20)

        # FULL backup with OLD binary
        self.backup_node(backup_dir, 'node', node, old_binary=True)

        pgbench = node.pgbench(
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            options=["-c", "1", "-T", "10", "--no-vacuum"])
        pgbench.wait()
        pgbench.stdout.close()

        # PAGE1 backup with OLD binary
        self.backup_node(
            backup_dir, 'node', node, backup_type='page', old_binary=True)

        node.safe_psql(
            'postgres',
            'DELETE from pgbench_accounts')

        node.safe_psql(
            'postgres',
            'VACUUM pgbench_accounts')

        # PAGE2 backup with OLD binary
        backup_id = self.backup_node(
            backup_dir, 'node', node, backup_type='page', old_binary=True)

        pgdata = self.pgdata_content(node.data_dir)

        # merge chain created by old binary with new binary
        output = self.merge_backup(backup_dir, "node", backup_id)

        # check that in-place is disabled
        self.assertNotIn(
            "WARNING: In-place merge is disabled "
            "because of program versions mismatch", output)

        # restore merged backup
        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))
        node_restored.cleanup()

        self.restore_node(backup_dir, 'node', node_restored)

        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.skip("skip")
    def test_page_vacuum_truncate(self):
        """
        make node, create table, take full backup,
        delete all data, vacuum relation,
        take page backup, insert some data,
        take second page backup,
        restore latest page backup using new binary
        and check data correctness
        old binary should be 2.2.x version
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)
        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.safe_psql(
            "postgres",
            "create sequence t_seq; "
            "create table t_heap as select i as id, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,1024) i")

        node.safe_psql(
            "postgres",
            "vacuum t_heap")

        id1 = self.backup_node(backup_dir, 'node', node, old_binary=True)
        pgdata1 = self.pgdata_content(node.data_dir)

        node.safe_psql(
            "postgres",
            "delete from t_heap")

        node.safe_psql(
            "postgres",
            "vacuum t_heap")

        id2 = self.backup_node(
            backup_dir, 'node', node, backup_type='page', old_binary=True)
        pgdata2 = self.pgdata_content(node.data_dir)

        node.safe_psql(
            "postgres",
            "insert into t_heap select i as id, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,1) i")

        id3 = self.backup_node(
            backup_dir, 'node', node, backup_type='page', old_binary=True)
        pgdata3 = self.pgdata_content(node.data_dir)

        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))
        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            data_dir=node_restored.data_dir, backup_id=id1)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata1, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()
        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            data_dir=node_restored.data_dir, backup_id=id2)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata2, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()
        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            data_dir=node_restored.data_dir, backup_id=id3)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata3, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()
        node_restored.cleanup()

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.skip("skip")
    def test_page_vacuum_truncate_compression(self):
        """
        make node, create table, take full backup,
        delete all data, vacuum relation,
        take page backup, insert some data,
        take second page backup,
        restore latest page backup using new binary
        and check data correctness
        old binary should be 2.2.x version
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)
        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.safe_psql(
            "postgres",
            "create sequence t_seq; "
            "create table t_heap as select i as id, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,1024) i")

        node.safe_psql(
            "postgres",
            "vacuum t_heap")

        self.backup_node(
            backup_dir, 'node',node, old_binary=True, options=['--compress'])

        node.safe_psql(
            "postgres",
            "delete from t_heap")

        node.safe_psql(
            "postgres",
            "vacuum t_heap")

        self.backup_node(
            backup_dir, 'node', node, backup_type='page',
            old_binary=True, options=['--compress'])

        node.safe_psql(
            "postgres",
            "insert into t_heap select i as id, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,1) i")

        self.backup_node(
            backup_dir, 'node', node, backup_type='page',
            old_binary=True, options=['--compress'])

        pgdata = self.pgdata_content(node.data_dir)

        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))
        node_restored.cleanup()

        self.restore_node(backup_dir, 'node', node_restored)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.skip("skip")
    def test_page_vacuum_truncate_compressed_1(self):
        """
        make node, create table, take full backup,
        delete all data, vacuum relation,
        take page backup, insert some data,
        take second page backup,
        restore latest page backup using new binary
        and check data correctness
        old binary should be 2.2.x version
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)
        self.set_archiving(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        node.safe_psql(
            "postgres",
            "create sequence t_seq; "
            "create table t_heap as select i as id, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,1024) i")

        node.safe_psql(
            "postgres",
            "vacuum t_heap")

        id1 = self.backup_node(
            backup_dir, 'node', node,
            old_binary=True, options=['--compress'])
        pgdata1 = self.pgdata_content(node.data_dir)

        node.safe_psql(
            "postgres",
            "delete from t_heap")

        node.safe_psql(
            "postgres",
            "vacuum t_heap")

        id2 = self.backup_node(
            backup_dir, 'node', node, backup_type='page',
            old_binary=True, options=['--compress'])
        pgdata2 = self.pgdata_content(node.data_dir)

        node.safe_psql(
            "postgres",
            "insert into t_heap select i as id, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,1) i")

        id3 = self.backup_node(
            backup_dir, 'node', node, backup_type='page',
            old_binary=True, options=['--compress'])
        pgdata3 = self.pgdata_content(node.data_dir)

        node_restored = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node_restored'))
        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            data_dir=node_restored.data_dir, backup_id=id1)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata1, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()
        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            data_dir=node_restored.data_dir, backup_id=id2)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata2, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()
        node_restored.cleanup()

        self.restore_node(
            backup_dir, 'node', node_restored,
            data_dir=node_restored.data_dir, backup_id=id3)

        # Physical comparison
        pgdata_restored = self.pgdata_content(node_restored.data_dir)
        self.compare_pgdata(pgdata3, pgdata_restored)

        self.set_auto_conf(node_restored, {'port': node_restored.port})
        node_restored.slow_start()
        node_restored.cleanup()

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.skip("skip")
    def test_hidden_files(self):
        """
        old_version should be < 2.3.0
        Create hidden file in pgdata, take backup
        with old binary, then try to delete backup
        with new binary
        """
        fname = self.id().split('.')[3]
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        node = self.make_simple_node(
            base_dir=os.path.join(module_name, fname, 'node'),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={'autovacuum': 'off'})

        self.init_pb(backup_dir, old_binary=True)
        self.add_instance(backup_dir, 'node', node, old_binary=True)
        node.slow_start()

        open(os.path.join(node.data_dir, ".hidden_stuff"), 'a').close()

        backup_id = self.backup_node(
            backup_dir, 'node',node, old_binary=True, options=['--stream'])

        self.delete_pb(backup_dir, 'node', backup_id)

        # Clean after yourself
        self.del_test_dir(module_name, fname)