Incremental Backups

Description

As our backups grow and the length of time to take a backup increases it would be nice to provide some other type of backup option. Ie. Incremental Backup.

So my thoughts are Full backup 1 once a day. Incremental X many times a day.

Links / references

Documentation blurb

Use cases

This would be used for pivotal cloud foundry customers. The use case would be as follows:

1. Full Backup consumes system resources and takes a long time to execute. Sometimes causing system to be unusable. If we are only performing one backup a day the last restore point could possibly be 23:59 minutes ago. To me this is bad customer service to my end users.

If I could run x many incremental backups during the day and one full system backup once a day this would be very useful. It would provide a more recent point to restore too and not cause my Gitlab instance to become unavailable during backup.

Feature checklist

Make sure these are completed before closing the issue, with a link to the relevant commit.

• Feature assurance
• Documentation
• Added to features.yml