diff options
Diffstat (limited to 'src/bin/pg_checksums/t/002_actions.pl')
| -rw-r--r-- | src/bin/pg_checksums/t/002_actions.pl | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/bin/pg_checksums/t/002_actions.pl b/src/bin/pg_checksums/t/002_actions.pl new file mode 100644 index 00000000000..97284e8930c --- /dev/null +++ b/src/bin/pg_checksums/t/002_actions.pl @@ -0,0 +1,160 @@ +# Do basic sanity checks supported by pg_checksums using +# an initialized cluster. + +use strict; +use warnings; +use PostgresNode; +use TestLib; +use Test::More tests => 45; + + +# Utility routine to create and check a table with corrupted checksums +# on a wanted tablespace. Note that this stops and starts the node +# multiple times to perform the checks, leaving the node started +# at the end. +sub check_relation_corruption +{ + my $node = shift; + my $table = shift; + my $tablespace = shift; + my $pgdata = $node->data_dir; + + $node->safe_psql('postgres', + "SELECT a INTO $table FROM generate_series(1,10000) AS a; + ALTER TABLE $table SET (autovacuum_enabled=false);"); + + $node->safe_psql('postgres', + "ALTER TABLE ".$table." SET TABLESPACE ".$tablespace.";"); + + my $file_corrupted = $node->safe_psql('postgres', + "SELECT pg_relation_filepath('$table');"); + my $relfilenode_corrupted = $node->safe_psql('postgres', + "SELECT relfilenode FROM pg_class WHERE relname = '$table';"); + + # Set page header and block size + my $pageheader_size = 24; + my $block_size = $node->safe_psql('postgres', 'SHOW block_size;'); + $node->stop; + + # Checksums are correct for single relfilenode as the table is not + # corrupted yet. + command_ok(['pg_checksums', '-D', $pgdata, + '-r', $relfilenode_corrupted], + "succeeds for single relfilenode on tablespace $tablespace with offline cluster"); + + # Time to create some corruption + open my $file, '+<', "$pgdata/$file_corrupted"; + seek($file, $pageheader_size, 0); + syswrite($file, "\0\0\0\0\0\0\0\0\0"); + close $file; + + # Checksum checks on single relfilenode fail + $node->command_checks_all([ 'pg_checksums', '-D', $pgdata, '-r', + $relfilenode_corrupted], + 1, + [qr/Bad checksums:.*1/], + [qr/checksum verification failed/], + "fails with corrupted data for single relfilenode on tablespace $tablespace"); + + # Global checksum checks fail as well + $node->command_checks_all([ 'pg_checksums', '-D', $pgdata], + 1, + [qr/Bad checksums:.*1/], + [qr/checksum verification failed/], + "fails with corrupted data on tablespace $tablespace"); + + # Drop corrupted table again and make sure there is no more corruption. + $node->start; + $node->safe_psql('postgres', "DROP TABLE $table;"); + $node->stop; + $node->command_ok(['pg_checksums', '-D', $pgdata], + "succeeds again after table drop on tablespace $tablespace"); + + $node->start; + return; +} + +# Initialize node with checksums enabled. +my $node = get_new_node('node_checksum'); +$node->init(extra => ['--data-checksums']); +my $pgdata = $node->data_dir; + +# Control file should know that checksums are enabled. +command_like(['pg_controldata', $pgdata], + qr/Data page checksum version:.*1/, + 'checksums enabled in control file'); + +# These are correct but empty files, so they should pass through. +append_to_file "$pgdata/global/99999", ""; +append_to_file "$pgdata/global/99999.123", ""; +append_to_file "$pgdata/global/99999_fsm", ""; +append_to_file "$pgdata/global/99999_init", ""; +append_to_file "$pgdata/global/99999_vm", ""; +append_to_file "$pgdata/global/99999_init.123", ""; +append_to_file "$pgdata/global/99999_fsm.123", ""; +append_to_file "$pgdata/global/99999_vm.123", ""; + +# These are temporary files and folders with dummy contents, which +# should be ignored by the scan. +append_to_file "$pgdata/global/pgsql_tmp_123", "foo"; +mkdir "$pgdata/global/pgsql_tmp"; +append_to_file "$pgdata/global/pgsql_tmp/1.1", "foo"; + +# Checksums pass on a newly-created cluster +command_ok(['pg_checksums', '-D', $pgdata], + "succeeds with offline cluster"); + +# Checks cannot happen with an online cluster +$node->start; +command_fails(['pg_checksums', '-D', $pgdata], + "fails with online cluster"); + +# Check corruption of table on default tablespace. +check_relation_corruption($node, 'corrupt1', 'pg_default'); + +# Create tablespace to check corruptions in a non-default tablespace. +my $basedir = $node->basedir; +my $tablespace_dir = "$basedir/ts_corrupt_dir"; +mkdir ($tablespace_dir); +$tablespace_dir = TestLib::real_dir($tablespace_dir); +$node->safe_psql('postgres', + "CREATE TABLESPACE ts_corrupt LOCATION '$tablespace_dir';"); +check_relation_corruption($node, 'corrupt2', 'ts_corrupt'); + +# Utility routine to check that pg_checksums is able to detect +# correctly-named relation files filled with some corrupted data. +sub fail_corrupt +{ + my $node = shift; + my $file = shift; + my $pgdata = $node->data_dir; + + # Create the file with some dummy data in it. + my $file_name = "$pgdata/global/$file"; + append_to_file $file_name, "foo"; + + $node->command_checks_all([ 'pg_checksums', '-D', $pgdata], + 1, + [qr/^$/], + [qr/could not read block 0 in file.*$file\":/], + "fails for corrupted data in $file"); + + # Remove file to prevent future lookup errors on conflicts. + unlink $file_name; + return; +} + +# Stop instance for the follow-up checks. +$node->stop; + +# Authorized relation files filled with corrupted data cause the +# checksum checks to fail. Make sure to use file names different +# than the previous ones. +fail_corrupt($node, "99990"); +fail_corrupt($node, "99990.123"); +fail_corrupt($node, "99990_fsm"); +fail_corrupt($node, "99990_init"); +fail_corrupt($node, "99990_vm"); +fail_corrupt($node, "99990_init.123"); +fail_corrupt($node, "99990_fsm.123"); +fail_corrupt($node, "99990_vm.123"); |