db/pg_probackup
db/pg_probackup
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pg_probackup/tests/delta.py

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import os
import unittest
from .helpers.ptrack_helpers import ProbackupTest, ProbackupException
from datetime import datetime, timedelta
from testgres import QueryException
import subprocess
import time
module_name = 'delta'
class DeltaTest(ProbackupTest, unittest.TestCase):
# @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
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '300s',
'autovacuum': 'off'
}
)
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname),
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node_restored.cleanup()
node.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, options=['--stream'])
node.safe_psql(
"postgres",
"delete from t_heap where ctid >= '(11,0)'"
)
node.safe_psql(
"postgres",
"vacuum t_heap"
)
self.backup_node(
backup_dir, 'node', node, backup_type='delta'
)
self.backup_node(
backup_dir, 'node', node, backup_type='delta'
)
pgdata = self.pgdata_content(node.data_dir)
self.restore_node(
backup_dir,
'node',
node_restored,
options=[
"-j", "1",
"--log-level-file=verbose"
]
)
# Physical comparison
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
node_restored.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '300s',
'autovacuum': 'off'
}
)
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname),
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node_restored.cleanup()
node.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.backup_node(backup_dir, 'node', node)
node.safe_psql(
"postgres",
"delete from t_heap where ctid >= '(11,0)'"
)
node.safe_psql(
"postgres",
"vacuum t_heap"
)
self.backup_node(
backup_dir, 'node', node, backup_type='delta'
)
self.backup_node(
backup_dir, '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.restore_node(
backup_dir,
'node',
node_restored,
options=[
"-j", "1",
"--log-level-file=verbose",
"-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.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
# Clean after yourself
# self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_delta_vacuum_truncate_3(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
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '300s',
'autovacuum': 'off'
}
)
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname),
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node_restored.cleanup()
node.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')"
).rstrip()
self.backup_node(backup_dir, 'node', node)
print(os.path.join(node.data_dir, filepath + '.1'))
os.unlink(os.path.join(node.data_dir, filepath + '.1'))
self.backup_node(
backup_dir, 'node', node, backup_type='delta'
)
self.backup_node(
backup_dir, 'node', node, backup_type='delta'
)
pgdata = self.pgdata_content(node.data_dir)
self.restore_node(
backup_dir,
'node',
node_restored,
options=[
"-j", "1",
"--log-level-file=verbose"
]
)
# Physical comparison
pgdata_restored = self.pgdata_content(node_restored.data_dir)
self.compare_pgdata(pgdata, pgdata_restored)
node_restored.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
# Clean after yourself
# self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_delta_stream(self):
"""
make archive node, take full and delta stream backups,
restore them and check data correctness
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '30s'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node.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.execute("postgres", "SELECT * FROM t_heap")
full_backup_id = self.backup_node(
backup_dir, '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.execute("postgres", "SELECT * FROM t_heap")
delta_backup_id = self.backup_node(
backup_dir, 'node', node,
backup_type='delta', options=['--stream'])
# Drop Node
node.cleanup()
# Check full backup
self.assertIn(
"INFO: Restore of backup {0} completed.".format(full_backup_id),
self.restore_node(
backup_dir, 'node', node,
backup_id=full_backup_id, options=["-j", "4"]),
'\n Unexpected Error Message: {0}\n'
' CMD: {1}'.format(repr(self.output), self.cmd))
node.start()
full_result_new = node.execute("postgres", "SELECT * FROM t_heap")
self.assertEqual(full_result, full_result_new)
node.cleanup()
# Check delta backup
self.assertIn(
"INFO: Restore of backup {0} completed.".format(delta_backup_id),
self.restore_node(
backup_dir, 'node', node,
backup_id=delta_backup_id, options=["-j", "4"]),
'\n Unexpected Error Message: {0}\n'
' CMD: {1}'.format(repr(self.output), self.cmd))
node.start()
delta_result_new = node.execute("postgres", "SELECT * FROM t_heap")
self.assertEqual(delta_result, delta_result_new)
node.cleanup()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '30s'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
# self.set_archiving(backup_dir, 'node', node)
node.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.execute("postgres", "SELECT * FROM t_heap")
full_backup_id = self.backup_node(
backup_dir, '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(0,2) i")
delta_result = node.execute("postgres", "SELECT * FROM t_heap")
delta_backup_id = self.backup_node(
backup_dir, 'node', node,
backup_type='delta', options=['--stream'])
# Drop Node
node.cleanup()
# Restore and check full backup
self.assertIn(
"INFO: Restore of backup {0} completed.".format(full_backup_id),
self.restore_node(
backup_dir, 'node', node,
backup_id=full_backup_id, options=["-j", "4"]),
'\n Unexpected Error Message: {0}\n CMD: {1}'.format(
repr(self.output), self.cmd))
node.start()
full_result_new = node.execute("postgres", "SELECT * FROM t_heap")
self.assertEqual(full_result, full_result_new)
node.cleanup()
# Restore and check delta backup
self.assertIn(
"INFO: Restore of backup {0} completed.".format(delta_backup_id),
self.restore_node(
backup_dir, 'node', node,
backup_id=delta_backup_id, options=["-j", "4"]),
'\n Unexpected Error Message: {0}\n CMD: {1}'.format(
repr(self.output), self.cmd))
node.start()
delta_result_new = node.execute("postgres", "SELECT * FROM t_heap")
self.assertEqual(delta_result, delta_result_new)
node.cleanup()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'fsync': 'off',
'shared_buffers': '1GB',
'maintenance_work_mem': '1GB',
'autovacuum': 'off',
'full_page_writes': 'off'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
# self.set_archiving(backup_dir, 'node', node)
node.start()
self.create_tblspace_in_node(node, 'somedata')
# CREATE TABLE
node.pgbench_init(
scale=100,
options=['--tablespace=somedata', '--no-vacuum'])
# FULL BACKUP
self.backup_node(backup_dir, '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.safe_psql("postgres", "select * from pgbench_accounts")
# delta BACKUP
self.backup_node(
backup_dir, 'node', node, backup_type='delta',
options=['--stream'])
# GET PHYSICAL CONTENT FROM NODE
pgdata = self.pgdata_content(node.data_dir)
# RESTORE NODE
restored_node = self.make_simple_node(
base_dir="{0}/{1}/restored_node".format(module_name, fname))
restored_node.cleanup()
tblspc_path = self.get_tblspace_path(node, 'somedata')
tblspc_path_new = self.get_tblspace_path(
restored_node, 'somedata_restored')
self.restore_node(backup_dir, '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.append_conf(
"postgresql.auto.conf", "port = {0}".format(restored_node.port))
restored_node.start()
while restored_node.safe_psql(
"postgres", "select pg_is_in_recovery()") == 't\n':
time.sleep(1)
result_new = restored_node.safe_psql(
"postgres", "select * from pgbench_accounts")
# COMPARE RESTORED FILES
self.assertEqual(result, result_new, 'data is lost')
if self.paranoia:
self.compare_pgdata(pgdata, pgdata_restored)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_delta_vacuum_full(self):
"""
make node, make full and delta stream backups,
restore them and check data correctness
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '300s'
}
)
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname),
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node_restored.cleanup()
node.start()
self.create_tblspace_in_node(node, 'somedata')
self.backup_node(backup_dir, '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"
)
# create async connection
conn = self.get_async_connect(port=node.port)
self.wait(conn)
acurs = conn.cursor()
acurs.execute("select pg_backend_pid()")
self.wait(conn)
pid = acurs.fetchall()[0][0]
print(pid)
gdb = self.gdb_attach(pid)
gdb.set_breakpoint('reform_and_rewrite_tuple')
if not gdb.continue_execution_until_running():
print('Failed gdb continue')
exit(1)
acurs.execute("VACUUM FULL t_heap")
if gdb.stopped_in_breakpoint():
if gdb.continue_execution_until_break(20) != 'breakpoint-hit':
print('Failed to hit breakpoint')
exit(1)
self.backup_node(
backup_dir, 'node', node,
backup_type='delta', options=['--stream']
)
self.backup_node(
backup_dir, 'node', node,
backup_type='delta', options=['--stream']
)
if self.paranoia:
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.restore_node(
backup_dir, '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.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_size': '10GB',
'max_wal_senders': '2',
'checkpoint_timeout': '5min',
'autovacuum': 'off'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node.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.safe_psql("postgres", "SELECT * FROM t_heap")
self.backup_node(
backup_dir, '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.backup_node(
backup_dir, 'node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname)
)
node_restored.cleanup()
self.restore_node(
backup_dir,
'node',
node_restored,
backup_id=backup_id,
options=["-j", "4", "--log-level-file=verbose"])
# 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.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
# DROP DATABASE DB1
node.safe_psql(
"postgres", "drop database db1")
# SECOND DELTA BACKUP
backup_id = self.backup_node(
backup_dir, '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.restore_node(
backup_dir,
'node',
node_restored,
backup_id=backup_id,
options=["-j", "4", "--log-level-file=verbose"]
)
# 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.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
try:
node_restored.safe_psql('db1', 'select 1')
# we should die here because exception is what we expect to happen
self.assertEqual(
1, 0,
"Expecting Error because we are connecting to deleted database"
"\n Output: {0} \n CMD: {1}".format(
repr(self.output), self.cmd)
)
except QueryException as e:
self.assertTrue(
'FATAL: database "db1" does not exist' in 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.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
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_size': '10GB',
'max_wal_senders': '2',
'checkpoint_timeout': '5min',
'autovacuum': 'off'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node.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.safe_psql("postgres", "SELECT * FROM t_heap")
filepath = node.safe_psql(
"postgres",
"SELECT pg_relation_filepath('t_heap')").rstrip()
self.backup_node(
backup_dir,
'node',
node,
options=["--stream"])
# PAGE BACKUP
backup_id = self.backup_node(
backup_dir,
'node',
node,
backup_type='page'
)
fullpath = os.path.join(
backup_dir, 'backups', 'node', backup_id, 'database', filepath)
self.assertFalse(os.path.exists(fullpath))
# if self.paranoia:
# pgdata_page = self.pgdata_content(
# os.path.join(
# backup_dir, 'backups',
# 'node', backup_id, 'database'))
# DELTA BACKUP
backup_id = self.backup_node(
backup_dir, 'node', node,
backup_type='delta',
options=["--stream", "--log-level-file=verbose"]
)
# 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)
fullpath = os.path.join(
backup_dir, 'backups', 'node', backup_id, 'database', filepath)
self.assertFalse(os.path.exists(fullpath))
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname)
)
node_restored.cleanup()
self.restore_node(
backup_dir,
'node',
node_restored,
backup_id=backup_id,
options=["-j", "4", "--log-level-file=verbose"])
# 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.append_conf(
"postgresql.auto.conf", "port = {0}".format(node_restored.port))
node_restored.start()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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.
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True, initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '30s',
'autovacuum': 'off'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node.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.backup_node(backup_dir, '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.safe_psql(
"postgres", "select * from t_heap")
self.backup_node(
backup_dir, 'node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname)
)
node_restored.cleanup()
self.restore_node(
backup_dir, '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.append_conf(
'postgresql.auto.conf', 'port = {0}'.format(node_restored.port))
node_restored.start()
while node_restored.safe_psql(
"postgres", "select pg_is_in_recovery()") == 't\n':
time.sleep(1)
result_new = node_restored.safe_psql(
"postgres", "select * from t_heap")
self.assertEqual(result, result_new, 'lost some data after restore')
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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.
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True, initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '30s',
'autovacuum': 'off'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node.start()
self.create_tblspace_in_node(node, 'somedata')
# FULL backup
self.backup_node(backup_dir, '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.backup_node(
backup_dir, '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.backup_node(
backup_dir, 'node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname)
)
node_restored.cleanup()
self.restore_node(
backup_dir, '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.append_conf(
'postgresql.auto.conf', 'port = {0}'.format(node_restored.port))
node_restored.start()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @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.
"""
fname = self.id().split('.')[3]
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True, initdb_params=['--data-checksums'],
pg_options={
'wal_level': 'replica',
'max_wal_senders': '2',
'checkpoint_timeout': '30s',
'autovacuum': 'off'
}
)
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node.start()
self.create_tblspace_in_node(node, 'somedata')
# FULL backup
self.backup_node(backup_dir, '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.backup_node(
backup_dir, 'node', node,
backup_type='delta',
options=["--stream"]
)
if self.paranoia:
pgdata = self.pgdata_content(node.data_dir)
# RESTORE
node_restored = self.make_simple_node(
base_dir="{0}/{1}/node_restored".format(module_name, fname)
)
node_restored.cleanup()
self.restore_node(
backup_dir, '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.append_conf(
'postgresql.auto.conf', 'port = {0}'.format(node_restored.port))
node_restored.start()
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_page_corruption_heal_via_ptrack_1(self):
"""make node, corrupt some page, check that backup failed"""
fname = self.id().split('.')[3]
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={'wal_level': 'replica', 'max_wal_senders': '2'}
)
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node.start()
self.backup_node(
backup_dir, 'node', node,
backup_type="full", options=["-j", "4", "--stream"])
node.safe_psql(
"postgres",
"create table t_heap as select 1 as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,1000) i")
node.safe_psql(
"postgres",
"CHECKPOINT;")
heap_path = node.safe_psql(
"postgres",
"select pg_relation_filepath('t_heap')").rstrip()
with open(os.path.join(node.data_dir, heap_path), "rb+", 0) as f:
f.seek(9000)
f.write(b"bla")
f.flush()
f.close
self.backup_node(
backup_dir, 'node', node, backup_type="delta",
options=["-j", "4", "--stream", "--log-level-file=verbose"])
# open log file and check
with open(os.path.join(backup_dir, 'log', 'pg_probackup.log')) as f:
log_content = f.read()
self.assertIn('block 1, try to fetch via SQL', log_content)
self.assertIn('SELECT pg_catalog.pg_ptrack_get_block', log_content)
f.close
self.assertTrue(
self.show_pb(backup_dir, 'node')[1]['Status'] == 'OK',
"Backup Status should be OK")
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("skip")
def test_page_corruption_heal_via_ptrack_2(self):
"""make node, corrupt some page, check that backup failed"""
fname = self.id().split('.')[3]
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
set_replication=True,
initdb_params=['--data-checksums'],
pg_options={'wal_level': 'replica', 'max_wal_senders': '2'}
)
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
node.start()
self.backup_node(
backup_dir, 'node', node, backup_type="full",
options=["-j", "4", "--stream"])
node.safe_psql(
"postgres",
"create table t_heap as select 1 as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,1000) i")
node.safe_psql(
"postgres",
"CHECKPOINT;")
heap_path = node.safe_psql(
"postgres",
"select pg_relation_filepath('t_heap')").rstrip()
node.stop()
with open(os.path.join(node.data_dir, heap_path), "rb+", 0) as f:
f.seek(9000)
f.write(b"bla")
f.flush()
f.close
node.start()
try:
self.backup_node(
backup_dir, 'node', node,
backup_type="delta", options=["-j", "4", "--stream"])
# we should die here because exception is what we expect to happen
self.assertEqual(
1, 0,
"Expecting Error because of page "
"corruption in PostgreSQL instance.\n"
" Output: {0} \n CMD: {1}".format(
repr(self.output), self.cmd))
except ProbackupException as e:
self.assertTrue(
"WARNING: File" in e.message and
"blknum" in e.message and
"have wrong checksum" in e.message and
"try to fetch via SQL" in e.message and
"WARNING: page verification failed, "
"calculated checksum" in e.message and
"ERROR: query failed: "
"ERROR: invalid page in block" in e.message and
"query was: SELECT pg_catalog.pg_ptrack_get_block" in e.message,
"\n Unexpected Error Message: {0}\n CMD: {1}".format(
repr(e.message), self.cmd))
self.assertTrue(
self.show_pb(backup_dir, 'node')[1]['Status'] == 'ERROR',
"Backup Status should be ERROR")
# Clean after yourself
self.del_test_dir(module_name, fname)
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