"Due to potential legal incompatibilities between the CDDL and GPL, despite both being OSI-approved free software licenses which comply with DFSG, ZFS development is not supported by the Linux kernel"
@mcc been that way for decades now
@whitequark I have a new hard drive I intend to use primarily for backup and I am currently considering BTRFS or ZFS for the Linux part instead of ext4 (because I hear they can do some thing of storing extra error-checking data to protect against physical disk corruption). In your view, if I intend to use mainline Debian indefinitely, will BTRFS, ZFS, both, or neither give me the least pain getting things working?
@mcc @whitequark just my take but I consider ZFS aimed at arrays and such. Single drive I’m just not sure you’re going to get any benefit and it might actually be substantial worse.

@petrillic @mcc I am only n=1 but will mention I use ZFS on all my single-drive systems (mostly laptops) and have zero complaints with performance. I appreciate being able to back up entire filesystems to my NAS (also ZFS) with checksums, snapshots, encryption etc. intact.

My biggest frustration is the lack of rebalancing support, specifically on pools big enough I can't copy everything off. Having to install separate kernel modules is only a mild irritation for me though, YMMV