Archive, need to have more details

[citronbleuv]

I'm not sure to understand something.

I have this config :

• target_preserve_min latest
• target_preserve 3d

Today, I have 3 backups

• 2020-01-01
• 2020-01-02
• 2020-01-03 (today)

I run a archive command, so I should have in archive folder :

• 2020-01-01
• 2020-01-02
• 2020-01-03

Now, we are the 2020-01-12, I run a new backup. So I should have

• 2020-01-12

Now I run archive, logicaly I should have :

• 2020-01-12

But how that work, archive command will remove the old and will resend all ? Or the system can still do the difference between the last archive 2020-01-03 and send the difference only ?

[luxagen]

IIUC, that example should make btrbk

• always preserve the latest snapshot
• keep 3 daily snapshots on the target (where I believe the documentation already defines the algorithm for identifying *ly snapshots)

Therefore, I believe btrbk will, in your example:

• create 2020-01-12
• delete 2020-01-01 (and any before that)
• since there's always at least one snapshot, still send 2020-01-12 incrementally

Anyone please correct me if I've got this wrong.

Edit: on reviewing the question, I notice that you've defined only the targetpreserve config but are using the archive command. If my answer is correct, it applies only if you change your example targetpreserve config to archivepreserve*.