vanilla linux 5.4.136 (ZFS + ldiskfs)
* ldiskfs needs an ldiskfs patch series for that kernel, ZFS does not
* Client primary kernels built and tested during release cycle:
+ 5.14.0-70.22.1.el9 (RHEL9.0)
4.18.0-372.16.1.el8 (RHEL8.6)
5.4.0-37 (Ubuntu 20.04)
5.3.18-59.27 (SLES15 SP3)