[HPDD-discuss] remove or disable llog entry?

We've got a buggy entry in the CONFIGS/<fsname>-MDT0000 llog file. It ended up there through a typo when running # lctl conf_param lustre-MDT000.mdt.identity_updall=NONE Pretty stupid, especially when trying to failover the MDT, it won't get mounted any more because the parameter "identity_updall" is not known :-P Is there a clean way to disable that llog entry or remove it from the llog? I'd use writeconf is just as last resort... I'm seeing some undocumented and deprecated "lctl llog_remove", but maybe there'se something better? Thanks in advance, Erich