> * ZFS - which is miles ahead of btrfs for production use
Can you explain in what way? btrfs is less mature, sure, but "enterprise Linux" vendors are about to start fully supporting in their next minor version update releases, and that is a good indicator of production use readiness, since they wouldn't do that if they weren't pretty sure it's not going to blow up in their face via an endless stream of bug reports.
> * racct and jails - cgroups is a mess
Thank you for sharing your opinion, an explanation of why it is a mess would be nice.
ZFS has l2arc, raid, scrubbing, dedup and it's stable, no enterprise will use btrfs in production for quite awhile due to bugs still being ironed out (read the mailing list).
Regarding cgroups? Accounting is bolted on effectively tracking tracked pages.
Can you explain in what way? btrfs is less mature, sure, but "enterprise Linux" vendors are about to start fully supporting in their next minor version update releases, and that is a good indicator of production use readiness, since they wouldn't do that if they weren't pretty sure it's not going to blow up in their face via an endless stream of bug reports.
> * racct and jails - cgroups is a mess
Thank you for sharing your opinion, an explanation of why it is a mess would be nice.