> The article is a great example of all the somewhat surprising peculiarities in ZFS. For example, the conversion will keep the stripe width and block size, me

> The article is a great example of all the somewhat surprising peculiarities in ZFS. For example, the conversion will keep the stripe width and block size, meaning your throughput of existing data won't improve. So it's not quite a full re-balance. This is generally in-line with other ZFS operations. For example, changing compression policies will not rewrite existing data and only new data is affected. It simplifies some code paths and keeps performance good no matter what. You don't get a surprising reduction on performance.