[ovirt-users] HA Broker corrupting iSCSI Lockspace

I'm not sure how it happened, but a few hours ago, the lockspace for the hosted engine became corrupted. sanlock reports a -223 error. CentOS 8 Stream, Ceph iSCSI backend (Reef at 18.2.4) using tcmu-runner. I managed to format the lockspace, after shutting down the HA Agents and Brokers on all HA Engine nodes, but as soon as I start up the HA Agent on any node, the lockspace becomes corrupted again, and sanlock starts returning the -223 error message again. I see no relevant other errors in what I can find so far. Any suggestions on where to investigate next? I have an entire cluster than cannot start/stop/migrate VMS as the entire DataCenter is marked Non Operational.