Для openSUSE Leap 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:EDV_Lotse:ZFSonLinux/openSUSE_Leap_15.6/home:EDV_Lotse:ZFSonLinux.repo
zypper refresh
zypper install zfs
Для openSUSE Leap 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:EDV_Lotse:ZFSonLinux/openSUSE_Leap_15.5/home:EDV_Lotse:ZFSonLinux.repo
zypper refresh
zypper install zfs
Для openSUSE Leap 15.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:EDV_Lotse:ZFSonLinux/openSUSE_Leap_15.4/home:EDV_Lotse:ZFSonLinux.repo
zypper refresh
zypper install zfs
Для openSUSE Leap 15.3 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:EDV_Lotse:ZFSonLinux/openSUSE_Leap_15.3/home:EDV_Lotse:ZFSonLinux.repo
zypper refresh
zypper install zfs