If there were at least two full backups and the last one was expired, it was impossible to make either a differential or incremental backup without first making a new full backup. The backupLabelCreate() function identified this situation as clock skew because the new backup label was compared with label of the expired full backup.
If the new backup is differential or incremental, then its label is now compared with the labels of differential or incremental backups related to the same full backup.
Also convert a hard-coded date length to a macro.
9ca492c missed adding auditing to this macro and as a result a few memory leaks have slipped through. Add auditing to the macro to close this hole.
Of the leaks found the only possibly serious one is in blockIncrProcess(), which would leak a PackRead of about eight bytes with every superblock. Since superblocks max out at a few thousand per file this was probably not too bad.
Also change the ordering of auditing in FUNCTION_TEST_RETURN_VOID(). Even though the order does not matter, having it different from the other macros is confusing and looks like an error.
This behavior is different than regular options where a repeated value will result in an error. It appears to be a legacy of the original Perl implementation, which used a hash as the underlying data type in the built-in command-line parser, and the C command-line parser was written to match.
This was missed in the C unit test migration and since then a new test was added that was not setting its timezone correctly.
This feature exists to make sure the tests will run on systems with different timezones and has no impact on the core code.
Deleting a stanza after all the storage driver stanzas were created was causing problems because the SFTP driver is slow and the GCS driver has no server (so it threw errors). This delayed the shutdown of PostgreSQL, which for some reason caused systemctl to hang when the documentation was being built on a RHEL host.
Move the section up and add a comment about why the location is required. Also add a comment to the GCS section about its location.
This does not address the issue of systemctl hanging on RHEL container hosts but it will hopefully make it less common.
Bring PostgreSQL >= 12 behavior in line with other versions when recovery type=none.
We are fairly sure this did not work correctly when PostgreSQL 12 was released, but apparently the issue has been fixed since then. Either way, after testing we have determined that the behavior is now as expected.
Some features are conditionally compiled into pgBackRest (e.g. lz4). Previously checking to see if the feature existed was the responsibility of the feature's module.
Centralize this logic in the config/parse module to make the errors more detailed and consistent.
This also fixes the assert that is thrown when SFTP storage is specified but SFTP support is not compiled into pgBackRest.
Combine StringId and int checking into a single loop. This seems more compact and makes it easier to add code that affects both types (and possibly more types in the future).
This was not tested in 87087fac and the generated config was only valid for pushing from the primary. Also do some general cleanup.
Update the SFTP server user to be "pgbackrest" instead of "postgres".
Even though sftp-all=y now creates a valid configuration, the user guide build still fails because SFTP is too slow and operations time out (particularly starting PostgreSQL). This will need to be addressed in a future commit.
This parameter is now optional and defaults to none so there is no reason to explicitly show it in user-facing documentation.
Also make the vm parameter in ci.pl optional to be consistent with how test.pl behaves.
The --no-log-timestamp option was missed when unit test building was migrated to C, which caused test timings to show up in the contributing guide. This caused no harm but did create churn in this file during releases.
Also improve the formatting when test timing is disabled.
Features:
* Block incremental backup. (Reviewed by John Morris, Stephen Frost, Stefan Fercot.)
* SFTP support for repository storage. (Contributed by Reid Thompson. Reviewed by Stephen Frost, David Steele.)
* PostgreSQL 16 support. (Reviewed by Stefan Fercot.)
Improvements:
* Allow page header checks to be skipped. (Reviewed by David Christensen. Suggested by David Christensen.)
* Avoid chown() on recovery files during restore. (Reviewed by Stefan Fercot, Marcelo Henrique Neppel. Suggested by Marcelo Henrique Neppel.)
* Add error retry detail for HTTP retries.
Documentation Improvements:
* Add warning about using recovery type=none. (Reviewed by Stefan Fercot.)
* Add note about running stanza-create on already-created repositories.
The prior timeouts were a bit aggressive and were causing timeouts in the Azure tests. There have also been occasional timeouts in other storage drivers.
The performance of CI environments is pretty variable so increased timeouts should make the tests more stable.
Double spaces have fallen out of favor in recent years because they no longer contribute to readability.
We have been using single spaces and editing related paragraphs for some time, but now it seems best to update the remaining instances to avoid churn in unrelated commits and to make it clearer what spacing contributors should use.
Remove beta status and update documentation to remove beta references and warnings.
The repo-block-* sub-options have been marked internal. Most users will be best off with the default behavior and we may still decide to change these options for remove them in the future.
These were intended to allow the block list to be scanned without reading the map but were never utilized. They were left in "just in case" and because they did not seem to be doing any harm.
In fact, it is better not to have the block numbers because this allows us set the block size at a future time as long as it is a factor of the super block size. One way this could be useful is to store older files without super blocks or a map in the full backup and then build a map for them if the file gets modified in a diff/incr backup. This would require reading the file from the full backup to build the map but it would be more space efficient and we could make more intelligent decisions about block size. It would also be possible to change the block size even if one had already been selected in a prior backup.
Omitting the block numbers makes the chunking unnecessary since there is now no way to make sense of the block list without the map. Also, we might want to build maps for unchunked block lists, i.e. files that were copied normally.
The chown() was already skipped on the files restored from the repository but the same logic was not applied to the generated recovery files, probably because chown'ing a few recovery files does not have performance implications. Use the same logic for recovery files to determined if they need to be chown'd.
Ultimately this behavior is pretty hard to test, so add a fail safe into the Posix driver that will skip chown if the permissions are already as required.
9e29c01 removed MacOS testing due to breaking changes in the update to arm on the platform.
Update the scripts to correctly work with the version of Homebrew deployed with the arm images.
These checks cause false negatives for page checksum verification when the page is encrypted because pd_upper might end up as 0 in the encrypted data. This issue is rare but reproducible given a large enough cluster.
Make these checks optional, but leave them enabled by default.
