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Support configurable WAL segment size.

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PostgreSQL 11 introduces configurable WAL segment sizes, from 1MB to 1GB.

There are two areas that needed to be updated to support this: building the archive-get queue and checking that WAL has been archived after a backup.  Both operations require the WAL segment size to properly build a list.

Checking the archive after a backup is still implemented in Perl and has an active database connection, so just get the WAL segment size from the database.

The archive-get command does not have a connection to the database, so get the WAL segment size from pg_control instead.  This requires a deeper inspection of pg_control than has been done in the past, so it seemed best to copy the relevant data structures from each version of PostgreSQL and build a generic interface layer to address them.  While this approach is a bit verbose, it has the advantage of being relatively simple, and can easily be updated for new versions of PostgreSQL.

Since the integration tests generate pg_control files for testing, teach Perl how to generate files with the correct offsets for both 32-bit and 64-bit architectures.
This commit is contained in:
David Steele
2018-09-25 10:24:42 +01:00
parent c0b0b4e541
commit d038b9a029
68 changed files with 4949 additions and 486 deletions
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4
test/lib/pgBackRestTest/Module/Backup/BackupFileUnitPerlTest.pm
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@ -84,7 +84,8 @@ sub run
my $strRepoFile = MANIFEST_TARGET_PGDATA . "/$strFileName";
my $strRepoPgControl = MANIFEST_FILE_PGCONTROL;
my $strPgControlRepo = storageRepo()->pathGet(STORAGE_REPO_BACKUP . "/$strBackupLabel/$strRepoPgControl");
my $strPgControlHash = 'b4a3adade1e81ebfc7e9a27bca0887a347d81522';
my $strPgControlHash =
$self->archBits() == 32 ? '8107e546c59c72a8c1818fc3610d7cc1e5623660' : '4c77c900f7af0d9ab13fa9982051a42e0b637f6c';
# Copy file to db path
executeTest('cp ' . $self->dataPath() . "/filecopy.archive2.bin ${strFileDb}");
@ -123,7 +124,6 @@ sub run
################################################################################################################################
if ($self->begin('backupFile(), backupManifestUpdate()'))
{
#---------------------------------------------------------------------------------------------------------------------------
# Copy pg_control and confirm manifestUpdate does not save the manifest yet
($iResultCopyResult, $lResultCopySize, $lResultRepoSize, $strResultCopyChecksum, $rResultExtra) =