I have a forum with 30k users, 3m posts, and 100k+ threads currently running Xenforo looking to migrate to Discourse. Have a few pre-migration questions, I had this typed in a draft but when I came back it seems to have killed off the draft so it may not be as detailed this time. D: Are there any…

[image] thefreekick: I migrated my forum from Xenforo (or, the Discourse team guys did it for me). Far fewer users but > 1m posts so it was large enough. Can’t think of anything that didn’t come across nicely. Some minor workarounds for post formats and things like that. Think the biggest challe…

I think I was the first migration from Xenforo using that script anyway so I think the importer that’s there now was written after doing mine. So hard to say how much of it was automatic because it hadn’t been done before. Post format issues mainly related to things like username tagging and media …

@techAPJ & @riking since you two are the main contributors to the xenforo importer do you know if there are any issues I should be aware of before doing an import? Such as: Will the categories transfer over? Will user groups transfer over? Will all accounts (even those that use unsupported charact…

Basically, it’s hard to say until you try it. Imports are pretty weird, there’s no one-size-fits-all. Expect to wipe the Discourse database a few times in case you don’t get it quite right. This is required if you make changes to the import script to move data that got missed, as already-imported r…

Really, if the users, categories, topics, and posts are carried over default then we’ll be fine. Does the current import script successfully cover those? So the steps are: Open this script discourse/script/import_scripts/xenforo.rb at main · discourse/discourse · GitHub Add DB information Modify …

[image] Overmind: Really, if the users, categories, topics, and posts are carried over default then we’ll be fine. Does the current import script successfully cover those? Looking at it briefly, yes, it should. [image] Overmind: 32 vCPU this is probably overkill - Ruby has a GIL (so 1…

[image] riking: this is probably overkill - Ruby has a GIL (so 1 thread executing user-mode code at any time). Go for the highest single-core performance server available to do the import; 8GB RAM will be more than enough. Batch size 1000 was fine in the past for me. So there isn’t any way t…

Sorry, but ain’t more cores help the sidekiq run his things?

[image] Overmind: So there isn’t any way to speed up the import? As some said it took up to 2 days for less content than what mine has, would prefer to minimize the amount of content / posting time loss as much as possible. You can re-run the importer with an updated source database and it wi…

[image] riking: You can re-run the importer with an updated source database and it will take less time, i.e. an incremental import. That’s typically what is done. So basically run the import as is right now. Then once it’s complete, run it again and it will add any new users / posts / threads…

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