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# test for archiving with hot standby
use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 3;
use File::Copy;
# Initialize master node, doing archives
my $node_master = get_new_node('master');
$node_master->init(
has_archiving => 1,
allows_streaming => 1);
my $backup_name = 'my_backup';
# Start it
$node_master->start;
# Take backup for standby
$node_master->backup($backup_name);
# Initialize standby node from backup, fetching WAL from archives
my $node_standby = get_new_node('standby');
$node_standby->init_from_backup($node_master, $backup_name,
has_restoring => 1);
$node_standby->append_conf('postgresql.conf',
"wal_retrieve_retry_interval = '100ms'");
$node_standby->start;
# Create some content on master
$node_master->safe_psql('postgres',
"CREATE TABLE tab_int AS SELECT generate_series(1,1000) AS a");
my $current_lsn =
$node_master->safe_psql('postgres', "SELECT pg_current_wal_lsn();");
# Force archiving of WAL file to make it present on master
$node_master->safe_psql('postgres', "SELECT pg_switch_wal()");
# Add some more content, it should not be present on standby
$node_master->safe_psql('postgres',
"INSERT INTO tab_int VALUES (generate_series(1001,2000))");
# Wait until necessary replay has been done on standby
my $caughtup_query =
"SELECT '$current_lsn'::pg_lsn <= pg_last_wal_replay_lsn()";
$node_standby->poll_query_until('postgres', $caughtup_query)
or die "Timed out while waiting for standby to catch up";
my $result =
$node_standby->safe_psql('postgres', "SELECT count(*) FROM tab_int");
is($result, qq(1000), 'check content from archives');
# Check the presence of temporary files specifically generated during
# archive recovery. To ensure the presence of the temporary history
# file, switch to a timeline large enough to allow a standby to recover
# a history file from an archive. As this requires at least two timeline
# switches, promote the existing standby first. Then create a second
# standby based on the promoted one. Finally, the second standby is
# promoted.
$node_standby->promote;
my $node_standby2 = get_new_node('standby2');
$node_standby2->init_from_backup($node_master, $backup_name,
has_restoring => 1);
$node_standby2->start;
# Now promote standby2, and check that temporary files specifically
# generated during archive recovery are removed by the end of recovery.
$node_standby2->promote;
my $node_standby2_data = $node_standby2->data_dir;
ok( !-f "$node_standby2_data/pg_wal/RECOVERYHISTORY",
"RECOVERYHISTORY removed after promotion");
ok( !-f "$node_standby2_data/pg_wal/RECOVERYXLOG",
"RECOVERYXLOG removed after promotion");
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