can't handle discovery auth requests when discovery auth is disabled

The Ceph iSCSI gateway doesn't allow target discovery when discovery_auth is disabled but the client sends discovery_auth requests

Apr 18 13:05:01 ceiscsi0 kernel: CHAP user or password not set for Initiator ACL
Apr 18 13:05:01 ceiscsi0 kernel: Security negotiation failed.
Apr 18 13:05:01 ceiscsi0 kernel: iSCSI Login negotiation failed.

This is especially annoying with oVirt, where you can only give one set of credentials for discovery and target auth and discovery auth requests are always sent. When I don't want to have the same credentials for both phases on the gateway and I disable discovery_auth, oVirt can't login. Other iSCSI vendors (FreeNAS) don't have this limitation.

I don't know if this is the right place to report it, but I would very much appreciate if this could be resolved.

thank you

Start by tracing how the Ceph iSCSI gateway handles discovery_auth settings and discovery authentication requests, using the reported CHAP and iSCSI login failure messages as the reproduction context. Determine the intended behavior when discovery_auth is disabled and verify that clients such as oVirt can complete discovery without requiring discovery credentials.

Written by the indexing model from the issue text.