The package libvirt-daemon-driver-storage-gluster is available in RockyLinux 8 but can’t find in RockyLinux 9.
Is the package deprecated or replaced by other?
Welcome to the forums. I saw your message in matter most as well.
Unfortunately, the gluster backend is dropped from enterprise linux.
You may be able to rebuild the package to get the support back. But you would have to maintain the package yourself afterwards. If that’s something you’re willing to do, I can try to walk you through trying to rebuild it.