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by jpeloquin 2008 days ago
Anecdotally, I've encountered issues with both ZFS and BTRFS at about the same rate. A public example of an apparent ZFS performance issue is https://github.com/openzfs/zfs/issues/9375 Both are much more quirky than simpler filesystems like ext4. Data integrity verification from checksumming makes it worth it though.

The ZFS vs. BTRFS choice, I think, depends more on whether you need specific features like offline deduplication or L2ARC / SLOG cache devices. And which one you're more familiar with (can troubleshoot better).