I had a break through this week. After sweating a little to edit LVM2's specfile and switch on D-Bus support. Now I'm able to get the following error: "Failed to get stats for '/dev/system/root': The object with LVM ID '/dev/system/root' doesn't exist" Rather than getting the old error: "Failed to get stats for '/dev/sysem/root': Failed to create DM task for the cache map '-dev/system/root'". Since and don't have any cached volumes here I'm taking that as an auspicious sign. Now, I'm gonna see about branching Leap 15.3's LVM2-2.03.05 and making the changes I did for my Tumbleweed's LVM2-2.03.12 branched package. Once I do this, would you be willing to test the package? I don't know in what kind of setup you're running the cached volumes, whether it's a production server or not.