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pg_probackup/tests/delta_test.py
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vshepard 99eec6e4e2 Add s3 tests
2024-05-03 10:54:40 +02:00

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import os
from .helpers.ptrack_helpers import ProbackupTest
from pg_probackup2.gdb import needs_gdb
from threading import Thread
class DeltaTest(ProbackupTest):
# @unittest.skip("skip")
def test_basic_delta_vacuum_truncate(self):
"""
make node, create table, take full backup,
delete last 3 pages, vacuum relation,
take delta backup, take second delta backup,
restore the latest delta backup and check data correctness
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True)
node_restored = self.pg_node.make_simple('node_restored')
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node_restored.cleanup()
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.pb.backup_node('node', node, options=['--stream'])
node.safe_psql(
"postgres",
"delete from t_heap where ctid >= '(11,0)'")
node.safe_psql(
"postgres",
"vacuum t_heap")
self.pb.backup_node('node', node, backup_type='delta')
self.pb.backup_node('node', node, backup_type='delta')
pgdata = self.pgdata_content(node.data_dir)
self.pb.restore_node('node', node_restored)
# Physical comparison
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# @unittest.skip("skip")
def test_delta_vacuum_truncate_1(self):
"""
make node, create table, take full backup,
delete last 3 pages, vacuum relation,
take delta backup, take second delta backup,
restore latest delta backup and check data correctness
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
)
node_restored = self.pg_node.make_simple('node_restored',
)
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node_restored.cleanup()
node.slow_start()
self.create_tblspace_in_node(node, 'somedata')
node.safe_psql(
"postgres",
"create sequence t_seq; "
"create table t_heap tablespace somedata 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.pb.backup_node('node', node)
node.safe_psql(
"postgres",
"delete from t_heap where ctid >= '(11,0)'"
)
node.safe_psql(
"postgres",
"vacuum t_heap"
)
self.pb.backup_node('node', node, backup_type='delta'
)
self.pb.backup_node('node', node, backup_type='delta'
)
pgdata = self.pgdata_content(node.data_dir)
old_tablespace = self.get_tblspace_path(node, 'somedata')
new_tablespace = self.get_tblspace_path(node_restored, 'somedata_new')
self.pb.restore_node(
'node',
node_restored,
options=[
"-T", "{0}={1}".format(
old_tablespace, new_tablespace)]
)
# Physical comparison
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# @unittest.skip("skip")
def test_delta_vacuum_truncate_2(self):
"""
make node, create table, take full backup,
delete last 3 pages, vacuum relation,
take delta backup, take second delta backup,
restore latest delta backup and check data correctness
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
)
node_restored = self.pg_node.make_simple('node_restored',
)
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node_restored.cleanup()
node.slow_start()
node.safe_psql(
"postgres",
"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(0,10100000) i;"
)
filepath = node.safe_psql(
"postgres",
"select pg_relation_filepath('t_heap')"
).decode('utf-8').rstrip()
self.pb.backup_node('node', node)
print(os.path.join(node.data_dir, filepath + '.1'))
os.unlink(os.path.join(node.data_dir, filepath + '.1'))
self.pb.backup_node('node', node, backup_type='delta')
self.pb.backup_node('node', node, backup_type='delta')
pgdata = self.pgdata_content(node.data_dir)
self.pb.restore_node('node', node_restored)
# Physical comparison
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# @unittest.skip("skip")
def test_delta_stream(self):
"""
make archive node, take full and delta stream backups,
restore them and check data correctness
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
pg_options={
'checkpoint_timeout': '30s'
}
)
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node.slow_start()
# FULL BACKUP
node.safe_psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector "
"from generate_series(0,100) i")
full_result = node.table_checksum("t_heap")
full_backup_id = self.pb.backup_node('node', node,
backup_type='full', options=['--stream'])
# delta BACKUP
node.safe_psql(
"postgres",
"insert into t_heap select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector "
"from generate_series(100,200) i")
delta_result = node.table_checksum("t_heap")
delta_backup_id = self.pb.backup_node('node', node,
backup_type='delta', options=['--stream'])
# Drop Node
node.cleanup()
# Check full backup
restore_result = self.pb.restore_node('node', node,
backup_id=full_backup_id,
options=[
"-j", "4", "--immediate",
"--recovery-target-action=promote"])
self.assertMessage(restore_result, contains="INFO: Restore of backup {0} completed.".format(full_backup_id))
node.slow_start()
full_result_new = node.table_checksum("t_heap")
self.assertEqual(full_result, full_result_new)
node.cleanup()
# Check delta backup
restore_result = self.pb.restore_node('node', node,
backup_id=delta_backup_id,
options=[
"-j", "4", "--immediate",
"--recovery-target-action=promote"])
self.assertMessage(restore_result, contains="INFO: Restore of backup {0} completed.".format(delta_backup_id))
node.slow_start()
delta_result_new = node.table_checksum("t_heap")
self.assertEqual(delta_result, delta_result_new)
node.cleanup()
# @unittest.skip("skip")
def test_delta_archive(self):
"""
make archive node, take full and delta archive backups,
restore them and check data correctness
"""
self.maxDiff = None
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True)
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node.slow_start()
# FULL BACKUP
node.safe_psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector from generate_series(0,1) i")
full_result = node.table_checksum("t_heap")
full_backup_id = self.pb.backup_node('node', node, backup_type='full')
# delta BACKUP
node.safe_psql(
"postgres",
"insert into t_heap select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector from generate_series(0,2) i")
delta_result = node.table_checksum("t_heap")
delta_backup_id = self.pb.backup_node('node', node, backup_type='delta')
# Drop Node
node.cleanup()
# Restore and check full backup
restore_result = self.pb.restore_node('node', node,
backup_id=full_backup_id,
options=[
"-j", "4", "--immediate",
"--recovery-target-action=promote"])
self.assertMessage(restore_result, contains="INFO: Restore of backup {0} completed.".format(full_backup_id))
node.slow_start()
full_result_new = node.table_checksum("t_heap")
self.assertEqual(full_result, full_result_new)
node.cleanup()
# Restore and check delta backup
restore_result = self.pb.restore_node('node', node,
backup_id=delta_backup_id,
options=[
"-j", "4", "--immediate",
"--recovery-target-action=promote"])
self.assertMessage(restore_result, contains="INFO: Restore of backup {0} completed.".format(delta_backup_id))
node.slow_start()
delta_result_new = node.table_checksum("t_heap")
self.assertEqual(delta_result, delta_result_new)
node.cleanup()
# @unittest.skip("skip")
def test_delta_multiple_segments(self):
"""
Make node, create table with multiple segments,
write some data to it, check delta and data correctness
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
pg_options={
'fsync': 'off',
'shared_buffers': '1GB',
'maintenance_work_mem': '1GB',
'full_page_writes': 'off'
}
)
self.pb.init()
self.pb.add_instance('node', node)
# self.pb.set_archiving('node', node)
node.slow_start()
self.create_tblspace_in_node(node, 'somedata')
# CREATE TABLE
node.pgbench_init(
scale=100,
options=['--tablespace=somedata', '--no-vacuum'])
# FULL BACKUP
self.pb.backup_node('node', node, options=['--stream'])
# PGBENCH STUFF
pgbench = node.pgbench(options=['-T', '50', '-c', '1', '--no-vacuum'])
pgbench.wait()
node.safe_psql("postgres", "checkpoint")
# GET LOGICAL CONTENT FROM NODE
result = node.table_checksum("pgbench_accounts")
# delta BACKUP
self.pb.backup_node('node', node,
backup_type='delta', options=['--stream'])
# GET PHYSICAL CONTENT FROM NODE
pgdata = self.pgdata_content(node.data_dir)
# RESTORE NODE
restored_node = self.pg_node.make_simple('restored_node')
restored_node.cleanup()
tblspc_path = self.get_tblspace_path(node, 'somedata')
tblspc_path_new = self.get_tblspace_path(
restored_node, 'somedata_restored')
self.pb.restore_node('node', restored_node,
options=[
"-j", "4", "-T", "{0}={1}".format(
tblspc_path, tblspc_path_new)])
# GET PHYSICAL CONTENT FROM NODE_RESTORED
pgdata_restored = self.pgdata_content(restored_node.data_dir)
# START RESTORED NODE
restored_node.set_auto_conf({'port': restored_node.port})
restored_node.slow_start()
result_new = restored_node.table_checksum("pgbench_accounts")
# COMPARE RESTORED FILES
self.assertEqual(result, result_new, 'data is lost')
if self.paranoia:
self.compare_pgdata(pgdata, pgdata_restored)
# @unittest.skip("skip")
@needs_gdb
def test_delta_vacuum_full(self):
"""
make node, make full and delta stream backups,
restore them and check data correctness
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True)
node_restored = self.pg_node.make_simple('node_restored')
node_restored.cleanup()
self.pb.init()
self.pb.add_instance('node', node)
node.slow_start()
self.create_tblspace_in_node(node, 'somedata')
self.pb.backup_node('node', node, options=['--stream'])
node.safe_psql(
"postgres",
"create table t_heap tablespace somedata as select i"
" as id from generate_series(0,1000000) i"
)
pg_connect = node.connect("postgres", autocommit=True)
gdb = self.gdb_attach(pg_connect.pid)
gdb.set_breakpoint('reform_and_rewrite_tuple')
gdb.continue_execution_until_running()
process = Thread(
target=pg_connect.execute, args=["VACUUM FULL t_heap"])
process.start()
gdb.stopped_in_breakpoint()
gdb.continue_execution_until_break(20)
self.pb.backup_node('node', node,
backup_type='delta', options=['--stream'])
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
gdb.remove_all_breakpoints()
gdb.detach()
process.join()
old_tablespace = self.get_tblspace_path(node, 'somedata')
new_tablespace = self.get_tblspace_path(node_restored, 'somedata_new')
self.pb.restore_node('node', node_restored,
options=["-j", "4", "-T", "{0}={1}".format(
old_tablespace, new_tablespace)])
# Physical comparison
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# @unittest.skip("skip")
def test_create_db(self):
"""
Make node, take full backup, create database db1, take delta backup,
restore database and check it presense
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
pg_options={
'max_wal_size': '10GB',
}
)
self.pb.init()
self.pb.add_instance('node', node)
node.slow_start()
# FULL BACKUP
node.safe_psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector from generate_series(0,100) i")
node.table_checksum("t_heap")
self.pb.backup_node('node', node,
options=["--stream"])
# CREATE DATABASE DB1
node.safe_psql("postgres", "create database db1")
node.safe_psql(
"db1",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector from generate_series(0,100) i")
# DELTA BACKUP
backup_id = self.pb.backup_node('node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.pg_node.make_simple('node_restored')
node_restored.cleanup()
self.pb.restore_node(
'node',
node_restored,
backup_id=backup_id,
options=[
"-j", "4",
"--immediate",
"--recovery-target-action=promote"])
# COMPARE PHYSICAL CONTENT
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# START RESTORED NODE
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# DROP DATABASE DB1
node.safe_psql(
"postgres", "drop database db1")
# SECOND DELTA BACKUP
backup_id = self.pb.backup_node('node', node,
backup_type='delta', options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE SECOND DELTA BACKUP
node_restored.cleanup()
self.pb.restore_node(
'node',
node_restored,
backup_id=backup_id,
options=[
"-j", "4",
"--immediate",
"--recovery-target-action=promote"]
)
# COMPARE PHYSICAL CONTENT
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# START RESTORED NODE
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
error_result = node_restored.safe_psql('db1', 'select 1', expect_error=True)
self.assertMessage(error_result, contains='FATAL: database "db1" does not exist')
# @unittest.skip("skip")
def test_exists_in_previous_backup(self):
"""
Make node, take full backup, create table, take page backup,
take delta backup, check that file is no fully copied to delta backup
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
pg_options={
'max_wal_size': '10GB',
'checkpoint_timeout': '5min',
}
)
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node.slow_start()
# FULL BACKUP
node.safe_psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector from generate_series(0,100) i")
node.table_checksum("t_heap")
filepath = node.safe_psql(
"postgres",
"SELECT pg_relation_filepath('t_heap')").decode('utf-8').rstrip()
self.pb.backup_node(
'node',
node,
options=["--stream"])
# PAGE BACKUP
backup_id = self.pb.backup_node(
'node',
node,
backup_type='page'
)
self.assertFalse(self.backup_file_exists(backup_dir, 'node', backup_id,
f'database/{filepath}'))
# if self.paranoia:
# pgdata_page = self.pgdata_content(
# os.path.join(
# backup_dir, 'backups',
# 'node', backup_id, 'database'))
# DELTA BACKUP
backup_id = self.pb.backup_node('node', node,
backup_type='delta',
options=["--stream"]
)
# if self.paranoia:
# pgdata_delta = self.pgdata_content(
# os.path.join(
# backup_dir, 'backups',
# 'node', backup_id, 'database'))
# self.compare_pgdata(
# pgdata_page, pgdata_delta)
self.assertFalse(self.backup_file_exists(backup_dir, 'node', backup_id,
f'database/{filepath}'))
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.pg_node.make_simple('node_restored'
)
node_restored.cleanup()
self.pb.restore_node(
'node',
node_restored,
backup_id=backup_id,
options=[
"-j", "4",
"--immediate",
"--recovery-target-action=promote"])
# COMPARE PHYSICAL CONTENT
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# START RESTORED NODE
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# @unittest.skip("skip")
def test_alter_table_set_tablespace_delta(self):
"""
Make node, create tablespace with table, take full backup,
alter tablespace location, take delta backup, restore database.
"""
node = self.pg_node.make_simple('node',
set_replication=True,
pg_options={
'checkpoint_timeout': '30s',
}
)
self.pb.init()
self.pb.add_instance('node', node)
node.slow_start()
# FULL BACKUP
self.create_tblspace_in_node(node, 'somedata')
node.safe_psql(
"postgres",
"create table t_heap tablespace somedata as select i as id,"
" md5(i::text) as text, md5(i::text)::tsvector as tsvector"
" from generate_series(0,100) i")
# FULL backup
self.pb.backup_node('node', node, options=["--stream"])
# ALTER TABLESPACE
self.create_tblspace_in_node(node, 'somedata_new')
node.safe_psql(
"postgres",
"alter table t_heap set tablespace somedata_new")
# DELTA BACKUP
result = node.table_checksum("t_heap")
self.pb.backup_node('node', node,
backup_type='delta',
options=["--stream"])
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.pg_node.make_simple('node_restored')
node_restored.cleanup()
self.pb.restore_node('node', node_restored,
options=[
"-j", "4",
"-T", "{0}={1}".format(
self.get_tblspace_path(node, 'somedata'),
self.get_tblspace_path(node_restored, 'somedata')
),
"-T", "{0}={1}".format(
self.get_tblspace_path(node, 'somedata_new'),
self.get_tblspace_path(node_restored, 'somedata_new')
)
]
)
# GET RESTORED PGDATA AND COMPARE
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# START RESTORED NODE
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
result_new = node_restored.table_checksum("t_heap")
self.assertEqual(result, result_new, 'lost some data after restore')
# @unittest.skip("skip")
def test_alter_database_set_tablespace_delta(self):
"""
Make node, take full backup, create database,
take delta backup, alter database tablespace location,
take delta backup restore last delta backup.
"""
backup_dir = self.backup_dir
node = self.pg_node.make_simple('node',
set_replication=True,
)
self.pb.init()
self.pb.add_instance('node', node)
node.slow_start()
self.create_tblspace_in_node(node, 'somedata')
# FULL backup
self.pb.backup_node('node', node, options=["--stream"])
# CREATE DATABASE DB1
node.safe_psql(
"postgres",
"create database db1 tablespace = 'somedata'")
node.safe_psql(
"db1",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(i::text)::tsvector as tsvector from generate_series(0,100) i")
# DELTA BACKUP
self.pb.backup_node('node', node,
backup_type='delta',
options=["--stream"]
)
# ALTER TABLESPACE
self.create_tblspace_in_node(node, 'somedata_new')
node.safe_psql(
"postgres",
"alter database db1 set tablespace somedata_new"
)
# DELTA BACKUP
self.pb.backup_node('node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.pg_node.make_simple('node_restored'
)
node_restored.cleanup()
self.pb.restore_node('node', node_restored,
options=[
"-j", "4",
"-T", "{0}={1}".format(
self.get_tblspace_path(node, 'somedata'),
self.get_tblspace_path(node_restored, 'somedata')
),
"-T", "{0}={1}".format(
self.get_tblspace_path(node, 'somedata_new'),
self.get_tblspace_path(node_restored, 'somedata_new')
)
]
)
# GET RESTORED PGDATA AND COMPARE
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# START RESTORED NODE
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
# @unittest.skip("skip")
def test_delta_delete(self):
"""
Make node, create tablespace with table, take full backup,
alter tablespace location, take delta backup, restore database.
"""
node = self.pg_node.make_simple('node',
set_replication=True,
pg_options={
'checkpoint_timeout': '30s',
}
)
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node.slow_start()
self.create_tblspace_in_node(node, 'somedata')
# FULL backup
self.pb.backup_node('node', node, options=["--stream"])
node.safe_psql(
"postgres",
"create table t_heap tablespace somedata as select i as id,"
" md5(i::text) as text, md5(i::text)::tsvector as tsvector"
" from generate_series(0,100) i"
)
node.safe_psql(
"postgres",
"delete from t_heap"
)
node.safe_psql(
"postgres",
"vacuum t_heap"
)
# DELTA BACKUP
self.pb.backup_node('node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.pg_node.make_simple('node_restored')
node_restored.cleanup()
self.pb.restore_node('node', node_restored,
options=[
"-j", "4",
"-T", "{0}={1}".format(
self.get_tblspace_path(node, 'somedata'),
self.get_tblspace_path(node_restored, 'somedata')
)
]
)
# GET RESTORED PGDATA AND COMPARE
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
# START RESTORED NODE
node_restored.set_auto_conf({'port': node_restored.port})
node_restored.slow_start()
def test_delta_nullified_heap_page_backup(self):
"""
make node, take full backup, nullify some heap block,
take delta backup, restore, physically compare pgdata`s
"""
node = self.pg_node.make_simple('node')
backup_dir = self.backup_dir
self.pb.init()
self.pb.add_instance('node', node)
self.pb.set_archiving('node', node)
node.slow_start()
node.pgbench_init(scale=1)
file_path = node.safe_psql(
"postgres",
"select pg_relation_filepath('pgbench_accounts')").decode('utf-8').rstrip()
node.safe_psql(
"postgres",
"CHECKPOINT")
self.pb.backup_node('node', node)
# Nullify some block in PostgreSQL
file = os.path.join(node.data_dir, file_path).replace("\\", "/")
if os.name == 'nt':
file = file.replace("\\", "/")
with open(file, 'r+b', 0) as f:
f.seek(8192)
f.write(b"\x00"*8192)
f.flush()
self.pb.backup_node('node', node,
backup_type='delta', options=["--log-level-file=verbose"])
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
content = self.read_pb_log()
self.assertIn(
'VERBOSE: File: {0} blknum 1, empty zeroed page'.format(file_path),
content)
if not self.remote:
self.assertIn(
'VERBOSE: File: "{0}" blknum 1, empty page'.format(file),
content)
self.assertNotIn(
"Skipping blknum 1 in file: {0}".format(file),
content)
# Restore DELTA backup
node_restored = self.pg_node.make_simple('node_restored')
node_restored.cleanup()
self.pb.restore_node('node', node_restored)
if self.paranoia:
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
def test_delta_backup_from_past(self):
"""
make node, take FULL stream backup, take DELTA stream backup,
restore FULL backup, try to take second DELTA stream backup
"""
instance_name = 'node'
node = self.pg_node.make_simple(instance_name,
set_replication=True)
backup_dir = self.backup_dir
self.pb.init()
self.pb.add_instance(instance_name, node)
node.slow_start()
backup_id = self.pb.backup_node(instance_name, node, options=['--stream'])
node.pgbench_init(scale=3)
# First DELTA
self.pb.backup_node(instance_name, node,
backup_type='delta', options=['--stream'])
# Restore FULL backup
node.cleanup()
self.pb.restore_node(instance_name, node, backup_id=backup_id)
node.slow_start()
# Second DELTA backup
error_result = self.pb.backup_node( instance_name, node,
backup_type='delta',
options=['--stream'],
expect_error=True)
self.assertMessage(error_result, regex=r'Current START LSN (\d+)/(\d+) is lower than START LSN (\d+)/(\d+) '
r'of previous backup \w{6}. It may indicate that we are trying '
r'to backup PostgreSQL instance from the past.')
# @unittest.expectedFailure
def test_delta_pg_resetxlog(self):
instance_name = 'node'
node = self.pg_node.make_simple(instance_name,
set_replication=True,
pg_options={'shared_buffers': '512MB',
'max_wal_size': '3GB'})
backup_dir = self.backup_dir
self.pb.init()
self.pb.add_instance(instance_name, node)
node.slow_start()
# Create table
node.safe_psql(
"postgres",
"create extension bloom; create sequence t_seq; "
"create table t_heap "
"as select nextval('t_seq')::int as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,2560) i")
self.pb.backup_node(instance_name, node, options=['--stream'])
node.safe_psql(
'postgres',
"update t_heap set id = nextval('t_seq'), text = md5(text), "
"tsvector = md5(repeat(tsvector::text, 10))::tsvector")
# kill the bastard
if self.verbose:
print('Killing postmaster. Losing Ptrack changes')
node.stop(['-m', 'immediate', '-D', node.data_dir])
# now smack it with sledgehammer
if node.major_version >= 10:
pg_resetxlog_path = self.get_bin_path('pg_resetwal')
else:
pg_resetxlog_path = self.get_bin_path('pg_resetxlog')
self.pb.run_binary(
[
pg_resetxlog_path,
'-D',
node.data_dir,
'-o 42',
'-f'
],
asynchronous=False)
if not node.status():
node.slow_start()
else:
print("Die! Die! Why won't you die?... Why won't you die?")
exit(1)
backup_id = self.pb.backup_node(instance_name,
node,
backup_type='delta',
options=['--stream'])
self.pb.validate(instance_name, backup_id)
def test_delta_backup_before_full_will_fail(self):
instance_name = 'node'
node = self.pg_node.make_simple(
base_dir=instance_name)
backup_dir = self.backup_dir
self.pb.init()
self.pb.add_instance(instance_name, node)
self.pb.set_archiving(instance_name, node)
node.slow_start()
error_result = self.pb.backup_node(instance_name, node, backup_type="delta", expect_error=True)
self.assertMessage(error_result,
contains='ERROR: could not open file "pg_wal/00000001.history": No such file or directory')
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