Hi.
Issue persists, perhaps it's mirrors/sync having troubles.

-> $ dnf search ceph --enablerepo centos-storage-common
CentOS-10 - Storage SIG - common                                                       28 kB/s | 154 kB     00:05    
Errors during downloading metadata for repository 'centos-storage-common':
  - Status code: 404 for https://mirrors.centos.org/metalink?repo=centos-storage-sig-all-all-10-stream&arch=x86_64 (IP: 38.145.60.21)
  - Status code: 404 for https://mirrors.centos.org/metalink?repo=centos-storage-sig-all-all-10-stream&arch=x86_64 (IP: 152.19.134.198)
Error: Failed to download metadata for repo 'centos-storage-common': Cannot prepare internal mirrorlist: Status code: 404 for https://mirrors.centos.org/metalink?repo=centos-storage-sig-all-all-10-stream&arch=x86_64 (IP: 38.145.60.21)