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| 1 | + |
| 2 | +# Copyright (c) 2021-2022, PostgreSQL Global Development Group |
| 3 | + |
| 4 | +# Test replay of tablespace/database creation/drop |
| 5 | + |
| 6 | +use strict; |
| 7 | +use warnings; |
| 8 | + |
| 9 | +use PostgreSQL::Test::Cluster; |
| 10 | +use PostgreSQL::Test::Utils; |
| 11 | +use Test::More; |
| 12 | + |
| 13 | +sub test_tablespace |
| 14 | +{ |
| 15 | + my $node_primary = PostgreSQL::Test::Cluster->new("primary1"); |
| 16 | + $node_primary->init(allows_streaming => 1); |
| 17 | + $node_primary->start; |
| 18 | + $node_primary->psql( |
| 19 | + 'postgres', |
| 20 | + qq[ |
| 21 | + SET allow_in_place_tablespaces=on; |
| 22 | + CREATE TABLESPACE dropme_ts1 LOCATION ''; |
| 23 | + CREATE TABLESPACE dropme_ts2 LOCATION ''; |
| 24 | + CREATE TABLESPACE source_ts LOCATION ''; |
| 25 | + CREATE TABLESPACE target_ts LOCATION ''; |
| 26 | + CREATE DATABASE template_db IS_TEMPLATE = true; |
| 27 | + ]); |
| 28 | + my $backup_name = 'my_backup'; |
| 29 | + $node_primary->backup($backup_name); |
| 30 | + |
| 31 | + my $node_standby = PostgreSQL::Test::Cluster->new("standby2"); |
| 32 | + $node_standby->init_from_backup($node_primary, $backup_name, |
| 33 | + has_streaming => 1); |
| 34 | + $node_standby->append_conf('postgresql.conf', |
| 35 | + "allow_in_place_tablespaces = on"); |
| 36 | + $node_standby->start; |
| 37 | + |
| 38 | + # Make sure connection is made |
| 39 | + $node_primary->poll_query_until('postgres', |
| 40 | + 'SELECT count(*) = 1 FROM pg_stat_replication'); |
| 41 | + |
| 42 | + $node_standby->safe_psql('postgres', 'CHECKPOINT'); |
| 43 | + |
| 44 | + # Do immediate shutdown just after a sequence of CREAT DATABASE / DROP |
| 45 | + # DATABASE / DROP TABLESPACE. This causes CREATE DATABASE WAL records |
| 46 | + # to be applied to already-removed directories. |
| 47 | + my $query = q[ |
| 48 | + CREATE DATABASE dropme_db1 WITH TABLESPACE dropme_ts1; |
| 49 | + CREATE TABLE t (a int) TABLESPACE dropme_ts2; |
| 50 | + CREATE DATABASE dropme_db2 WITH TABLESPACE dropme_ts2; |
| 51 | + CREATE DATABASE moveme_db TABLESPACE source_ts; |
| 52 | + ALTER DATABASE moveme_db SET TABLESPACE target_ts; |
| 53 | + CREATE DATABASE newdb TEMPLATE template_db; |
| 54 | + ALTER DATABASE template_db IS_TEMPLATE = false; |
| 55 | + DROP DATABASE dropme_db1; |
| 56 | + DROP TABLE t; |
| 57 | + DROP DATABASE dropme_db2; DROP TABLESPACE dropme_ts2; |
| 58 | + DROP TABLESPACE source_ts; |
| 59 | + DROP DATABASE template_db; |
| 60 | + ]; |
| 61 | + |
| 62 | + $node_primary->safe_psql('postgres', $query); |
| 63 | + $node_primary->wait_for_catchup($node_standby, 'replay', |
| 64 | + $node_primary->lsn('write')); |
| 65 | + |
| 66 | + # show "create missing directory" log message |
| 67 | + $node_standby->safe_psql('postgres', |
| 68 | + "ALTER SYSTEM SET log_min_messages TO debug1;"); |
| 69 | + $node_standby->stop('immediate'); |
| 70 | + # Should restart ignoring directory creation error. |
| 71 | + is($node_standby->start(fail_ok => 1), 1, "standby node started"); |
| 72 | + $node_standby->stop('immediate'); |
| 73 | +} |
| 74 | + |
| 75 | +test_tablespace(); |
| 76 | + |
| 77 | +# Ensure that a missing tablespace directory during create database |
| 78 | +# replay immediately causes panic if the standby has already reached |
| 79 | +# consistent state (archive recovery is in progress). |
| 80 | + |
| 81 | +my $node_primary = PostgreSQL::Test::Cluster->new('primary2'); |
| 82 | +$node_primary->init(allows_streaming => 1); |
| 83 | +$node_primary->start; |
| 84 | + |
| 85 | +# Create tablespace |
| 86 | +$node_primary->safe_psql( |
| 87 | + 'postgres', q[ |
| 88 | + SET allow_in_place_tablespaces=on; |
| 89 | + CREATE TABLESPACE ts1 LOCATION '' |
| 90 | + ]); |
| 91 | +$node_primary->safe_psql('postgres', |
| 92 | + "CREATE DATABASE db1 WITH TABLESPACE ts1"); |
| 93 | + |
| 94 | +# Take backup |
| 95 | +my $backup_name = 'my_backup'; |
| 96 | +$node_primary->backup($backup_name); |
| 97 | +my $node_standby = PostgreSQL::Test::Cluster->new('standby3'); |
| 98 | +$node_standby->init_from_backup($node_primary, $backup_name, |
| 99 | + has_streaming => 1); |
| 100 | +$node_standby->append_conf('postgresql.conf', |
| 101 | + "allow_in_place_tablespaces = on"); |
| 102 | +$node_standby->start; |
| 103 | + |
| 104 | +# Make sure standby reached consistency and starts accepting connections |
| 105 | +$node_standby->poll_query_until('postgres', 'SELECT 1', '1'); |
| 106 | + |
| 107 | +# Remove standby tablespace directory so it will be missing when |
| 108 | +# replay resumes. |
| 109 | +my $tspoid = $node_standby->safe_psql('postgres', |
| 110 | + "SELECT oid FROM pg_tablespace WHERE spcname = 'ts1';"); |
| 111 | +my $tspdir = $node_standby->data_dir . "/pg_tblspc/$tspoid"; |
| 112 | +File::Path::rmtree($tspdir); |
| 113 | + |
| 114 | +my $logstart = get_log_size($node_standby); |
| 115 | + |
| 116 | +# Create a database in the tablespace and a table in default tablespace |
| 117 | +$node_primary->safe_psql( |
| 118 | + 'postgres', |
| 119 | + q[ |
| 120 | + CREATE TABLE should_not_replay_insertion(a int); |
| 121 | + CREATE DATABASE db2 WITH TABLESPACE ts1; |
| 122 | + INSERT INTO should_not_replay_insertion VALUES (1); |
| 123 | + ]); |
| 124 | + |
| 125 | +# Standby should fail and should not silently skip replaying the wal |
| 126 | +# In this test, PANIC turns into WARNING by allow_in_place_tablespaces. |
| 127 | +# Check the log messages instead of confirming standby failure. |
| 128 | +my $max_attempts = $PostgreSQL::Test::Utils::timeout_default; |
| 129 | +while ($max_attempts-- >= 0) |
| 130 | +{ |
| 131 | + last |
| 132 | + if ( |
| 133 | + find_in_log( |
| 134 | + $node_standby, "WARNING: creating missing directory: pg_tblspc/", |
| 135 | + $logstart)); |
| 136 | + sleep 1; |
| 137 | +} |
| 138 | +ok($max_attempts > 0, "invalid directory creation is detected"); |
| 139 | + |
| 140 | +done_testing(); |
| 141 | + |
| 142 | + |
| 143 | +# return the size of logfile of $node in bytes |
| 144 | +sub get_log_size |
| 145 | +{ |
| 146 | + my ($node) = @_; |
| 147 | + |
| 148 | + return (stat $node->logfile)[7]; |
| 149 | +} |
| 150 | + |
| 151 | +# find $pat in logfile of $node after $off-th byte |
| 152 | +sub find_in_log |
| 153 | +{ |
| 154 | + my ($node, $pat, $off) = @_; |
| 155 | + |
| 156 | + $off = 0 unless defined $off; |
| 157 | + my $log = PostgreSQL::Test::Utils::slurp_file($node->logfile); |
| 158 | + return 0 if (length($log) <= $off); |
| 159 | + |
| 160 | + $log = substr($log, $off); |
| 161 | + |
| 162 | + return $log =~ m/$pat/; |
| 163 | +} |
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