Migrate large postgresql database (windows -> linux) [closed]

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I have a "large" PostgreSQL (9.6 with timescale plugin) database (about 1Tb). And would like to migrate it to a Linux machine. The naive approach would be pg_dump and pg_restore. (Not sure how long that might take on a powerful machine with SSD on both sides, maybe you have an idea?)

Just wanted to ask if this is the way to go or if there might be a better more convenient solution. What I saw so far were pgBackRestore and barman.

I'm asking this question since I already had some trouble migrating a MongoDB database which took really very long. So now I would like to avoid errors : )

Thanks a lot for any hint!

Answer 1

With the directory format (-F d) of pg_dump, you can parallelize dump and restore, which will help if there are several large tables.

Answer 2

You should be able to setup a streaming replica on your Linux machine. Then promote it. Use pg_basebackup to take the initial copy, but you can do this while the master is running. Promoting the replica to be the new master will only take seconds, if that.