Option to reuse last daily backup for weekly/monthly instead of new full dump

[ouabira]

Hi,

Weekly and monthly backups currently run a new full mysqldump, even though a full daily backup already exists. This causes long backup times and unnecessary CPU/IO load, especially with large databases.

Expected
Weekly and monthly backups should be able to reuse the latest daily backup instead of performing another full dump.

Proposal
Introduce config options such as:

• WEEKLY_USE_LAST_DAILY=yes
• MONTHLY_USE_LAST_DAILY=yes

This way, daily jobs still produce full dumps, while weekly/monthly simply copy/archive the latest daily.

Benefits

• Faster weekly/monthly runs
• Lower server load
• Avoids redundant dumps

Thank you