Little update here: I tried ubuntu server 16.04 with HWE (4.13.0-36-generic) and lxd 3.0 + zfs 0.7.5 (latest from bionic repo) - and it seems there is no such bug with 4.13 kernel.
After that I updated kernel (from bionic repo again - 4.15.0-22-generic) - and but appear again: zfs hangs if my lxd ct restarts (on mount again). So now I am kind of sure that it is kernel bug. Also I tried 4.16.12 from here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16.12/ Same behaviour - zfs hangs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1773392 Title: zfs hangs on mount/unmount To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773392/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs