xen-tools-xendomains-wait-disk from home:fsirl:xen-with-zstd project
Select Your Operating System
Add repository and install manually
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:fsirl:xen-with-zstd/15.4/home:fsirl:xen-with-zstd.repo zypper refresh zypper install xen-tools-xendomains-wait-disk