ZFS is OK I suppose, but it isn't native. So you have to jump through hoops to use it, just like Nvidia binary graphics drivers. BTRFS works well. I've used it

ZFS is OK I suppose, but it isn't native. So you have to jump through hoops to use it, just like Nvidia binary graphics drivers. BTRFS works well. I've used it for a NAS since 2012. It started with two mirrored 2 TB WD RED drives. Since then it's gone through an expansion to 6 drives in RAID 10 and two drive failures and replacements. Pretty decent performance and never a serious problem. I've also used it on two laptops with SSD. It had some weird edge cases there using Docker with a lot of snapshots and running out of space for metadata. Unlike some people, I found it pretty straight-forward to recover by adding more space using either a USB drive or reusing my swap partition. BTRFS snapshots are easy to do and great for backups and Docker image layers. I felt the need to write this because your comment got three or four anti-BTRFS responses, and BTRFS has always been good to me.