tree a2102e59163ad0c001e044435cf8de2f4f5ec02e
parent 75a06aafcbe751d7ddb99ca8d815afc1e2972aaa
author ricolin <rlin@vexxhost.com> 1673445968 +0800
committer ricolin <rlin@vexxhost.com> 1673446546 +0800

Refector retention backup delete

This will make incremental backup delete logic more simple and
easy to read.