The integration tests that were supposed to prevent this regression did not work as intended. They verified the contents of a table in the (supposedly) restored tablespace, deleted the table, and then deleted the tablespace. All of this was deemed sufficient to prove that the tablespace had been restored correctly and was valid.
However, PostgreSQL will happily recreate a tablespace on the basis of a single full-page write, at least in the affected versions. Since writes to the test table were replayed from WAL with each recovery, all the tests passed even though the tablespace was missing after the restore.
The tests have been updated to include direct comparisons against the file system and a new table that is not replayed after a restore because it is created before the backup and never modified again.
Versions ≥ 9.0 were not affected due to numerous synthetic integration tests that verify backups and restores file by file.
* More optimized container suite that greatly improves build time.
* Added static Debian packages for Devel::Cover to reduce build time.
* Add deprecated state for containers. Deprecated containers may only be used to build packages.
* Remove Debian 8 from CI because it does not provide additional coverage over Ubuntu 14.04 and Ubuntu 16.04.
The options accommodate systems where CAs are not automatically found by IO::Socket::SSL, i.e. RHEL7, or to load custom CAs.
Suggested by Scott Frazer.
* Combine hardlink and non/compressed in synthetic tests to reduce test time and improve coverage.
* Change log level of hardlink logging to detail.
* Cast size in S3 manifest to integer.
Bug Fixes:
* Fixed the info command so the WAL archive min/max displayed is for the current database version. (Fixed by Cynthia Shang.)
* Fixed the backup command so the backup-standby option is reset (and the backup proceeds on the master) if the standby is not configured and/or reachable. (Fixed by Cynthia Shang.)
* Fixed config warnings raised from a remote process causing errors in the master process. (Fixed by Cynthia Shang.)
Features:
* Amazon S3 repository support. (Reviewed by Cynthia Shang.)
Refactoring:
* Refactor storage layer to allow for new repository filesystems using drivers. (Reviewed by Cynthia Shang.)
* Refactor IO layer to allow for new compression formats, checksum types, and other capabilities using filters. (Reviewed by Cynthia Shang.)
* Move modules in Protocol directory in subdirectories.
* Move backup modules into Backup directory.
Refactor storage layer to allow for new repository filesystems using drivers. (Reviewed by Cynthia Shang.)
Refactor IO layer to allow for new compression formats, checksum types, and other capabilities using filters. (Reviewed by Cynthia Shang.)
Bug Fixes:
* Fixed an issue where read-only operations that used local worker processes (i.e. restore) were creating write locks that could interfere with parallel archive-push. (Reported by Jens Wilke.)
Features:
* Added the stanza-upgrade command to provide a mechanism for upgrading a stanza after upgrading to a new major version of PostgreSQL. (Contributed by Cynthia Shang.)
* Added validation of pgbackrest.conf to display warnings if options are not valid or are not in the correct section. (Contributed by Cynthia Shang.)
Refactoring:
* Simplify locking scheme. Now, only the master process will hold write locks (for archive-push and backup commands) and not all local and remote worker processes as before.
* Refactor Ini.pm to facilitate testing.
* Do not set timestamps of files in the backup directories to match timestamps in the cluster directory. This was originally done to enable backup resume, but that process is now implemented with checksums.
* Improved error message when the restore command detects the presence of postmaster.pid. (Suggested by Yogesh Sharma.)
* Renumber return codes between 25 and 125 to avoid PostgreSQL interpreting some as fatal signal exceptions. (Suggested by Yogesh Sharma.)
* The backup and restore commands no longer copy via temp files. In both cases the files are checksummed on resume so there's no danger of partial copies.
* Allow functions to accept optional parameters as a hash.
* Refactor File->list() and fileList() to accept optional parameters.
* Refactor backupLabel() and add unit tests.
* Silence some perl critic warnings. (Contributed by Cynthia Shang.)
Making this dynamic in commit 5d2e792 broke doc builds from cache. The long-term solution is to create a special user for doc builds but that’s beyond the scope of this release.
* Refactor Ini.pm to facilitate testing.
* Complete statement/branch coverage for Ini.pm.
* Improved functions used to test/munge manifest and info files.
* Full coverage is verified when specified.
* Modules marked with partial coverage will error if they are actually fully covered.
* Simplified test representation is DefineTest.
* Added new representation for queries in DefineTest and added API functions.
* Update modules using DefineTest to use new API.
* Fixed an issue where read-only operations that used local worker processes (i.e. restore) were creating write locks that could interfere with parallel archive-push. (Reported by Jens Wilke.)
* Simplify locking scheme. Now, only the master process will hold write locks (archive-push, backup) and not all the local and remote worker processes as before.
The stanza-upgrade command provides a mechanism for upgrading a stanza after upgrading to a new major version of PostgreSQL.
Contributed by Cynthia Shang.
Bug Fixes:
* Fixed an issue where tables over 1GB would report page checksum warnings after the first segment. (Reported by Stephen Frost.)
* Fixed an issue where databases created with a non-default tablespace would raise bogus warnings about pg_filenode.map and pg_internal.init not being page aligned. (Reported by blogh.)
Refactoring:
* Improved the code and tests for fileManifest() to prevent a possible race condition when files are removed by the database while the manifest is being built.
* Automated builds of Debian packages for all supported distributions.
* Added --dev option to aggregate commonly used dev options.
* Added --no-package option to skip package builds.
* C library and packages are built by default, added -smart option to rebuild only when file changes are detected.
* The --libc-only option has been changed to --build-only now that packages builds have been added.
Bug Fixes:
* Fixed a regression introduced in v1.13 that could cause backups to fail if files were removed (e.g. tables dropped) while the manifest was being built. (Reported by Navid Golpayegani.)
Refactoring:
* Refactor FileCommon::fileManifest() and FileCommon::fileStat to be more modular to allow complete branch/statement level coverage testing.
Bug Fixes:
* Fixed an issue where an archive-push error would not be retried and would instead return errors to PostgreSQL indefinitely (unless the .error file was manually deleted). (Reported by Jens Wilke.)
* Fixed a race condition in parallel archiving where creation of new paths generated an error when multiple processes attempted to do so at the same time. (Reported by Jens Wilke.)
Refactoring:
* Improved performance of wal archive min/max provided by the info command. (Suggested by Jens Wilke.)
* Documentation can now be built with reusable blocks to reduce duplication.
* Added ability to pass options to containers within the documentation.
* Add proper tag to slightly emphasize proper nouns.
IMPORTANT NOTE: The new implementation of asynchronous archiving no longer copies WAL to a separate queue. If there is any WAL left over in the old queue after upgrading to 1.13, it will be abandoned and not pushed to the repository.
To prevent this outcome, stop archiving by setting archive_command = false. Next, drain the async queue by running pgbackrest --stanza=[stanza-name] archive-push and wait for the process to complete. Check that the queue in [spool-path]/archive/[stanza-name]/out is empty. Finally, install 1.13 and restore the original archive_command.
IMPORTANT NOTE: The stanza-create command is not longer optional and must be executed before backup or archiving can be performed on a new stanza. Pre-existing stanzas do not require stanza-create to be executed.
Bug Fixes:
* Fixed const assignment giving compiler warning in C library. (Fixed by Adrian Vondendriesch.)
* Fixed a few directory syncs that were missed for the --repo-sync option.
* Fixed an issue where a missing user/group on restore could cause an "uninitialized value" error in File->owner(). (Reported by Leonardo Avellar.)
* Fixed an issue where protocol mismatch errors did not output the expected value.
* Fixed a spurious archive-get log message that indicated an exit code of 1 was an abnormal termination.
Features:
* Improved, multi-process implementation of asynchronous archiving.
* Improved stanza-create command so that it can repair broken repositories in most cases and is robust enough to be made mandatory. (Contributed by Cynthia Shang.)
* Improved check command to run on a standby, though only basic checks are done because pg_switch_xlog() cannot be executed on a replica. (Contributed by Cynthia Shang.)
* Added archive and backup WAL ranges to the info command.
* Added warning to update pg_tablespace.spclocation when remapping tablespaces in PostgreSQL < 9.2. (Contributed by blogh.)
* Remove remote lock requirements for the archive-get, restore, info, and check commands since they are read-only operations. (Suggested by Michael Vitale.)
Refactoring:
* Refactor File and BackupCommon modules to improve test coverage.
* Return proper error code when unable to convert a relative path to an absolute path. (Suggested by Yogesh Sharma.)
* Log file banner is not output until the first log entry is written. (Suggested by Jens Wilke.)
* Moved File->manifest() into the FileCommon.pm module.
* Moved the Archive modules to the Archive directory and split the archive-get and archive-push commands into separate modules.
* Split the check command out of the Archive.pm module.
* Allow logging to be suppressed via logDisable() and logEnable().
* Allow for locks to be taken more than once in the same process without error.
* Lock directories can be created when more than one directory level is required.
* Clean up optionValid()/optionTest() logic in Lock.pm.
* Added Exception::exceptionCode() and Exception::exceptionMessage() to simplify error handling logic.
* Represent .gz extension with a constant.
* Allow empty files to be created with FileCommon::fileStringWrite() and use temp files to avoid partial reads.
* Refactor process IO and process master/minion code out from the common protocol code.
* Reduced the likelihood of torn pages causing a false positive in page checksums by filtering on start backup LSN.
* Remove Intel-specific optimization from C library build flags. (Contributed by Adrian Vondendriesch.)
* Removed --lock option. This option was introduced before the lock directory could be located outside the repository and is now obsolete.
* Added --log-timestamp option to allow timestamps to be suppressed in logging. This is primarily used to avoid filters in the automated documentation.
* Fixed alignment issues with multiline logging.
