has anyone else had issues with ZFS on recent kernels and distros? I'm a bit of a newbie to daily use of ZFS, but I found it's fairly easy to completely lockup with lots of metadata ops (eg. du or big rsync). the thing that fixed it for me is booting with -> cgroup_disable=memory which I found from here https://github.com/zfsonlinux/zfs/issues/4726 but the patch commited there didn't fix it for me. I'm not sure if that's quite the right issue, or if I should be patching ZFS 7.0.0 instead of 0.6.5.7? if the root cause is not enough GPL symbols exported from the kernel then that's sad. the perils of non GPL code :-/ BTW this is on fedora 24 with root on ZFS, but it sounds like ubuntu has similar issues. symptoms feel like a livelock in some slab handling rather than an outright OOM. there's 100% system time on all cores, zero fs activity, no way out except to reset. unfortunately root on ZFS on a laptop means no way that I can think of to get stack traces or logs :-/ cheers, robin