If the tests are running quickly then the time target might end up the same as the end time of the prior full backup. That means restore auto-select will not pick it as a candidate and restore the last backup instead causing the restore compare to fail.
So, sleep one second.
The primary source for project info is now src/version.h.
The pgBackRestDoc::ProjectInfo module loads the project info from src/version.h at runtime so there is no need to update it.
This is consistent with the way BackRest and BackRest test were renamed way back in 18fd2523.
More modules will be moving to pgBackRestDoc soon so renaming now reduces churn later.
This directory was once the home of the production Perl code but since f0ef73db this is no longer true.
Move the modules to test in most cases, except where the module is expected to be useful for the doc engine beyond the expected lifetime of the Perl test code (about a year if all goes well).
The exception is pgBackRest::Version which requires more work to migrate since it is used to track pgBackRest versions.
LZ4 compresses data faster than gzip but at a lower ratio. This can be a good tradeoff in certain scenarios.
Note that setting compress-type=lz4 will make new backups and archive incompatible (unrestorable) with prior versions of pgBackRest.
This was the interface between Perl and C introduced in 36a5349b but since f0ef73db has only been used by the Perl integration tests. This is expensive code to maintain just for testing.
The main dependency was the interface to storage, no matter where it was located, e.g. S3. Replace this with the new-introduced repo commands (d3c83453) that allow access to repo storage via the command line.
The other dependency was on various cfgOption* functions and CFGOPT_ constants that were convenient but not necessary. Replace these with hard-coded strings in most places and create new constants for commonly used values.
Remove all auto-generated Perl code. This means that the error list will no longer be maintained automatically so copy used errors to Common::Exception.pm. This file will need to be maintained manually going forward but there is not likely to be much churn as the Perl integration tests are being retired.
Update test.pl and related code to remove LibC builds.
Ding, dong, LibC is dead.
Add compress-type option and deprecate compress option. Since the compress option is boolean it won't work with multiple compression types. Add logic to cfgLoadUpdateOption() to update compress-type if it is not set directly. The compress option should no longer be referenced outside the cfgLoadUpdateOption() function.
Add common/compress/helper module to contain interface functions that work with multiple compression types. Code outside this module should no longer call specific compression drivers, though it may be OK to reference a specific compression type using the new interface (e.g., saving backup history files in gz format).
Unit tests only test compression using the gz format because other formats may not be available in all builds. It is the job of integration tests to exercise all compression types.
Additional compression types will be added in future commits.
All the methods in this module will need to be implemented via the command-line in order to get rid of LibC, so the first step is to reduce the code in the module as much as possible.
First remove storageDb() and use storageTest() instead. Then create storageTest() using pgBackRestTest::Common::Storage which has no dependencies on LibC. Now the only storage using the LibC interface is storageRepo().
Remove all link functions since those operations cannot be performed on a repo unless it is Posix, in which case the LibC interface is not needed. Same for owner().
Remove pathSync() because syncs are not required in the tests. No test data is reused after a crash.
Path create/exists functions should never be explicitly performed on a repo so remove those. File exists can be implemented by calling info() instead.
Remove encryption detection functions which were only used by Backup/Archive::Info reconstruct() which are now obsolete.
Remove all filters except pgBackRest::Storage::Filter::CipherBlock since they are not being used. That also means there are no filters returning results so remove all the result code.
Move hashSize() and pathAbsolute() into pgBackRest::Storage::Base where they can be shared between pgBackRest::Storage::Storage and pgBackRestTest::Common::Storage.
This was mostly dead code except the DB_BACKUP_ADVISORY_LOCK constant, moved to the real/all test module, and the function that pulls info from pg_control, moved to ExpireEnvTest.pm.
Using static values serves as a better cross-check against the page checksum code. The downside is that these checksums may not work with some big endian systems but in that case neither will the unit tests.
We can also remove the page checksum interface from LibC which brings us one step closer to eliminating it.
Page size is passed around a lot but in fact it can only have one value, PG_PAGE_SIZE_DEFAULT, which is checked when pg_control is loaded. There may be an argument for supporting multiple page sizes in the future but for now just use the constant to simplify the code.
There is also a significant performance benefit. Because pageSize was being used in pageChecksumBlock() the main loop was neither unrolled nor vectorized (-funroll-loops -ftree-vectorize) as it is now with a constant loop boundary.
Auto-selection is performed only when --set is not specified. If a backup set for the given target time cannot not be found, the latest (default) backup set will be used.
Currently a limited number of date formats are recognized and timezone names are not allowed, only timezone offsets.
Most of these tests are just checking that errors are thrown when required. These are well covered in various unit tests.
The "cannot resume" tests are also well covered in the backup unit tests.
Finally, config warnings are well covered in the config unit tests.
There is more to be done here, but this accounts for the low-hanging fruit.
Set log-level-file=off when more that one test will run. In this case is it impossible to see the logs anyway since they will be automatically cleaned up after the test. This improves performance pretty dramatically since trace-level logging is expensive. If a singe integration test is run then log-level-file is trace by default but can be changed with the --log-level-test-file option.
Reduce buffer-size to 64k to save memory during testing and allow more processes to run in parallel.
Update log replacement rules so that these options can change without affecting expect logs.
Remove embedded Perl from the distributed binary. This includes code, configure, Makefile, and packages. The distributed binary is now pure C.
Remove storagePathEnforceSet() from the C Storage object which allowed Perl to write outside of the storage base directory. Update mock/all and real/all integration tests to use storageLocal() where they were violating this rule.
Remove "c" option that allowed the remote to tell if it was being called from C or Perl.
Code to convert options to JSON for passing to Perl (perl/config.c) has been moved to LibC since it is still required for Perl integration tests.
Update build and installation instructions in the user guide.
Remove all Perl unit tests.
Remove obsolete Perl code. In particular this included all the Perl protocol code which required modifications to the Perl storage, manifest, and db objects that are still required for integration testing but only run locally. Any remaining Perl code is required for testing, documentation, or code generation.
Rename perlReq to binReq in define.yaml to indicate that the binary is required for a test. This had been the actual meaning for quite some time but the key was never renamed.
For the most part this is a direct migration of the Perl code into C except as noted below.
A backup can now be initiated from a linked directory. The link will not be stored in the manifest or recreated on restore. If a link or directory does not already exist in the restore location then a directory will be created.
The logic for creating backup labels has been improved and it should no longer be possible to get a backup label earlier than the latest backup even with timezone changes or clock skew. This has never been an issue in the field that we know of, but we found it in testing.
For online backups all times are fetched from the PostgreSQL primary host (before only copy start was). This doesn't affect backup integrity but it does prevent clock skew between hosts affecting backup duration reporting.
Archive copy now works as expected when the archive and backup have different compression settings, i.e. when one is compressed and the other is not. This was a long-standing bug in the Perl code.
Resume will now work even if hardlink settings have been changed.
Reviewed by Cynthia Shang.
82df7e6f and 9856fef5 updated tests that used test points in preparation for the feature not being available in the C code.
Since tests points are no longer used remove the infrastructure.
Also remove one stray --test option in mock/all that was essentially a noop but no longer works now that the option has been removed.
These were not getting updated to match the directory name when the manifests were copied.
The Perl code didn't care but the C code expects labels to be set correctly.
Archive check does not run when in offline backup mode but the option was set to true in the manifest. It's harmless since these options are informational only but it could cause confusion when debugging.
Test points are not supported by the new C code so these will be replaced with unit tests.
The fact that the tests still pass even when the changes aren't made mid-backup (except application_name) shows how weak they were in the first place.
Even so, this does represent a regression in (soon to be be removed) Perl coverage.
Test points will not be available in the C code so update these tests as best as possible without using them.
This represents a loss of coverage for the Perl code (soon to be removed) which will be made up in the C code with unit tests.
These tests require test points which are not being implemented in the C code.
This functionality is fully tested in the command/control unit tests so integration tests are no longer required.
This expression determines which files contain page checksums but it was also including the directory above the relation directories. In a real PostgreSQL installation this not a problem because these directories don't contain any files.
However, our tests place a file in `base` which the Perl code thought should have page checksums while the new C code says no.
Update the expression to document the change and avoid churn in the expect logs later.
The protocol timeout tests have been superceded by unit tests.
The TEST_BACKUP_RESUME test point was incorrectly included into a number of tests, probably a copy pasto. It didn't hurt anything but it did add 200ms to each test where it appeared.
Catalog and control version tests were redundant. The database version and system id tests covered the important code paths and the C code gets these values from a lookup table.
Finally, fix an incomplete update to the backup.info file while munging for tests.
Previously the mock integration tests would be skipped for VMs other than the standard four used in CI. Now VMs outside the standard four will run the same tests as VM4 (currently U18).
This user was created before we tested in containers to ensure isolation between the pg and repo hosts which were then just directories. The downside is that this resulted in a lot of sudos to set the pgbackrest user and to remove files which did not belong to the main test user.
Containers provide isolation without needing separate users so we can now safely remove the pgbackrest user. This allows us to remove most sudos, except where they are explicitly needed in tests.
While we're at it, remove the code that installed the Perl C library (which also required sudo) and simply add the build path to @INC instead.
This test was not creating recovery.signal when testing with --type=preserve. The preserve recovery type only keeps existing files and does not create any.
RC1 was just ignoring recovery.signal and going right into recovery. Weirdly, 12.0 used restore_command to do crash recovery which made the problem harder to diagnose, but this has now been fixed in PostgreSQL and should be released in 12.1.
A number of tests have been updated and Fedora 30 has been added to the test suite so the unit tests can run on gcc 9.
Stop running unit tests on co6/7 since we appear to have ample unit test coverage.
This tool was only being used it a few places but was a pretty large dependency.
Rework the forceStorageMove() code using our storage layer and replace one aws cli cp with a storage put.
Also, remove the Dockerfile that was once used to build the Scality S3 test container.
Note that building the manifest on each host has been temporarily removed.
This feature will likely be brought back as a non-default option (after the manifest code has been fully migrated to C) since it can be fairly expensive.
Recovery settings are now written into postgresql.auto.conf instead of recovery.conf. Existing recovery_target* settings will be commented out to help avoid conflicts.
A comment is added before recovery settings to identify them as written by pgBackRest since it is unclear how, in general, old settings will be removed.
recovery.signal and standby.signal are automatically created based on the recovery settings.
PostgreSQL 12 will shutdown in these cases which seems to be the correct action (according to the documentation) when hot_standby = off, but older versions are promoting instead. Set target_action explicitly so all versions will behave the same way.
This does beg the question of whether the PostgreSQL 12 behavior is wrong (though it matches the docs) or the previous versions are.
This restore type automatically adds standby_mode=on to recovery.conf.
This could be accomplished previously by setting --recovery-option=standby_mode=on but PostgreSQL 12 requires standby mode to be enabled by a special file named standby.signal.
The new restore type allows us to maintain a common interface between PostgreSQL versions.
For the most part this is a direct migration of the Perl code into C.
There is one important behavioral change with regard to how file permissions are handled. The Perl code tried to set ownership as it was in the manifest even when running as an unprivileged user. This usually just led to errors and frustration.
The C code works like this:
If a restore is run as a non-root user (the typical scenario) then all files restored will belong to the user/group executing pgBackRest. If existing files are not owned by the executing user/group then an error will result if the ownership cannot be updated to the executing user/group. In that case the file ownership will need to be updated by a privileged user before the restore can be retried.
If a restore is run as the root user then pgBackRest will attempt to recreate the ownership recorded in the manifest when the backup was made. Only user/group names are stored in the manifest so the same names must exist on the restore host for this to work. If the user/group name cannot be found locally then the user/group of the PostgreSQL data directory will be used and finally root if the data directory user/group cannot be mapped to a name.
Reviewed by Cynthia Shang.
This test is commonly used for sanity checking but the combination of S3 and encryption makes it hard to use and encourages temporary changes to make it usable.
Acknowledge this and disable S3 and encryption for this test and move them to mock/all/2.
