How to create dependencies between backups in Bacula?

Question

linux

Good day.
There is a backup server built on Bacula.
The problem is that there are times when Bacula deletes the old full backup ( F ), leaving useless increments ( I ) and decrements ( D ) behind.
Backup schedule:

Schedule {
  Name = «WeeklyCycle»
  Run = Full 1st sun at 01:05
  Run = Differential 2nd-5th sun at 01:05
  Run = Incremental mon-sat at 01:05
}

Job setup:

Full Backup Pool = FullPool
Incremental Backup Pool = IncPool
Differential Backup Pool = DiffPool

Pool setup

Pool {
  Name = FullPool
  Label Format = «${Pool}-${Year}${Month:p/2/0/r}${Day:p/2/0/r}-${Hour:p/2/0/r}${Minute:p/2/0/r}-${JobId}»
  Pool Type = Backup
  Recycle = no
  Action On Purge = Truncate
  AutoPrune = yes
  Volume Retention = 1 month
  Maximum Volume Bytes = 50G
}

Simply increasing the storage time is not an option, as it will simply increase the depth of the time.
On the example for June:
F was made on 01.06, the next F was made on 06.07.
As a result, on 01.07 I can no longer restore anything, because the full backup was deleted, while its D and I remained in the directory and are useless.
I need something like this:

(screenshot from Acronis Backup & Recovery)
Any thoughts on how to implement this?
Thank you.

Answer 1

I do Full Backup in the task, and in the schedule I set Full on weekends, and Incremental on ordinary days. By the way, this is also recommended in the Bacula documentation.