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Full/Incremental Backup with Preliminary Copy to Reduce WAL Consumption

Full/Incremental Backup with Preliminary Copy to Reduce WAL Consumption: a task in LegoFlow-SWE (Harbor dataset). Currently, pgBackRest performs all file copying after pg backup start() is called, which means all WAL generated during the entire backup period is required for consistency. For…

The task

Currently, pgBackRest performs all file copying after `pg_backup_start()` is called, which means all WAL generated during the entire backup period is required for consistency. For databases with many files that haven't been recently modified, this results in excessive WAL retention.

Part of Lego-X/LegoFlow-SWE.