@nounours18200 said in How to perform a Full backup of Opera:
This is obviously an excellent idea, but I don't understand how to define who is the Master (the PC from which we want to export the data) and the Slave (the PC that will pump the data).
I am logged into my Opera account, have defined "synchronized averything", but I don't understand what it does !
Think of the Sync server (https://www.sync.opera.com/) as cloud storage for some of your data. It starts off empty. Then, you sync an Opera to it and that Opera's data gets uploaded to the Sync server. Then, changes in that Opera (like adding or deleting a bookmark) get reflected on the server too. Then, when you Sync another Opera from the server, that Opera pulls in data from the server that it doesn't have and then uploads data from it that the server doesn't have. Then, the first Opera pulls in the new data on the server that got uploaded from the other Opera. It's kind of like a webmail service or IMAP in an email client. The messages are on the server and what you do in one Opera happens in the other. In the case of conflicts, (like a setting set to a different value between 2 Operas), I think you can consider the first Opera to sync to the server as the master (the one that gets priority), but I have not tested to make sure.
However, there are all kinds caveats with Opera Sync, and it can get complicated. Some data gets merged between Operas and the server. Some things like tabs are just uploaded to the server from each Opera and then just made available to look at from other Operas. It all depends on the type of data.