Barman backup all parallel

[abneits]

My installation :

• 1 backup server
• X postgresql DB Configure with streaming wal and streaming backup,

Actually, my backups are done with barman backup all (great to avoid to create multiple job task) My "problem" is :

• the command do it sequential
• can take long time to backup one after the other

i wonder if it's possible to do it in parallel instead of one by one

[mikewallace1979]

I think adding an option so barman backup all can run in parallel is a great idea.

We'll need to do a little research/experimentation to figure out how best to implement it - the quickest solution is probably to use multiprocessing in the handling of the cli command and make each call to server.backup in a separate process. The tricky part is tracking the state of each backup and handling/reporting failures - we should do something a little friendlier to the user than just joining each backup process until its done.