wal-g

This release is the result of QA cycle on features of v0.1.7 and v0.1.8 prereleases:

• numerous fixes and code improvements
• better disk read parallelism
• native retries for S3 storage
  Also, @Aevin1387 added support for AWS Server Side Encryption.

This is a QA version to test new features of v0.1.8 with fixes:

1. Fixed counting and uploading of tar parts during backup-push
2. Fixed delta backup inefficiency

Thanks to all collaborators who tested previous QA release, especially to @CyberDem0n, @lehni, @gregor-rayman, @davidfetter, and @rdunklau.

This is a QA version to test new features:

1. -v flag to read version
2. parallel read from disk to further improve the performance of backup-push
3. better retries for all S3 calls
4. installation of user data into JSON sentinel to connect back up with external entities
5. numerous refactorings and code improvements

Also, I have reports from @CyberDem0n about inefficiencies of delta backups. I cannot reproduce this reports though.

If you are looking for the stable version, please use 0.1.7.

This release fixes issue #63. This issue led to the possibility of an incorrect point of restoration when the restoration was done without "standby_mode = on". The issue was reproducible only on Amazon EBS drives and frequency of reproduction varied, thanks @bartdag for extensive help with researching this issue.
Also, this release brings features shown necessary by QA cycle on the heavily loaded clusters:

1. Support of parallel wal-push with reading from archive_status directory (relates to #58 )
2. WAL-G was failing during backup-push if files were disappearing during tar creation. This was fixed (relates to #65 )
3. Concurrency of wal-prefetch was improved

Some edge-case error handling and code quality work was done by @ferhatelmas. Thanks to @benubois and @lesovsky for reporting problems and sharing their experience.

This release adds quality assurance code for issue #63
This is hard to reproduce problem which results in the necessity to retry backup restoration procedure.

This release addresses several important bugs, found by the community.
See #55, #56, some cases of #35. Also, some code and docs improvements #52, #53, #54, #57.

This release adds several new features:

• Encryption support
• Delta backups
• Backups on replication slaves
• Some other improvements