[ovirt-users] Remove master storage from data center?

Hi, We've migrated storage from glusterfs to iSCSI, so now we have 2 storages in our data center. As we've already finished, we want to remove the gluster storage from our data center (which is the master storage right now). We've tried to put it on maintenance but we're getting this error: 2016-03-02 13:02:02,087 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.DisconnectStoragePoolVDSCommand] (org.ovirt.thread.pool-8-thread-34) [259a3130] Command 'DisconnectStoragePoolVDSCommand(HostName = ovirt01.domain.com, DisconnectStoragePoolVDSCommandParameters:{runAsync='true', hostId='c31dca1a-e5bc-43f6-940f-6397e3ddbee4', storagePoolId='fa155d43-4e68-486f-9f9d-ae3e3916cc4f', vds_spm_id='7'})' execution failed: VDSGenericException: VDSErrorException: Failed to DisconnectStoragePoolVDS, error = Operation not allowed while SPM is active: ('fa155d43-4e68-486f-9f9d-ae3e3916cc4f',), code = 656 Does that mean that *all* hosts must be on maintenance to do that? There's nothing left on the gluster storage right now. Thanks. Nicolás