I decided to try ZFS here the other day, but I did not find a detailed and simple manual on how to implement it on CentOS, I decided to correct the situation. In addition, I wanted to install all this in EFI mode. - not to stand still? And at the same time understand for yourself how DKMS works, as well as aspects of manual installation of RPM-based distributions. ZFS was not chosen by chance either, since it was planned to deploy a hypervisor on this machine and use zvol to store images of virtual machines. I wanted something more than a software raid + lvm or simple file storage of images, something like ceph, but for one host this is too bold. Looking ahead to say that I was very pleased with this file system, its performance and all its chips.