Hello everyone. I have ovirt with 2 datacenters. In first datacenter I've created ISO/NFS domain on external to ovirt NFS server. When i try to create ISO/NFS domain in second datacenter using the same NFS server/export path - i get error like this: "Failed to retrieve existing storage domain information." /var/log/vdsm/vdsm.log : Thread-863::INFO::2015-10-02 16:25:44,670::logUtils::44::dispatcher::(wrapper) Run and protect: disconnectStorageServer(domType=1, spUUID='00000000-0000-0000-0000-000000000000', conList=[{'port': '', 'connection': '172.17.10.19:/exports/iso', 'iqn': '', 'user': '', 'tpgt': '1', 'protocol_version': '4', 'password': '******', 'id': '00000000-0000-0000-0000-000000000000'}], options=None) Thread-863::ERROR::2015-10-02 16:25:44,681::hsm::2547::Storage.HSM::(disconnectStorageServer) Could not disconnect from storageServer Traceback (most recent call last): File "/usr/share/vdsm/storage/hsm.py", line 2543, in disconnectStorageServer conObj.disconnect() File "/usr/share/vdsm/storage/storageServer.py", line 336, in disconnect return self._mountCon.disconnect() File "/usr/share/vdsm/storage/storageServer.py", line 237, in disconnect self._mount.umount(True, True) File "/usr/share/vdsm/storage/mount.py", line 254, in umount return self._runcmd(cmd, timeout) File "/usr/share/vdsm/storage/mount.py", line 239, in _runcmd raise MountError(rc, ";".join((out, err))) MountError: (1, ';umount: /rhev/data-center/mnt/172.17.10.19:_exports_iso: not found\n') Thread-863::INFO::2015-10-02 16:25:44,750::logUtils::47::dispatcher::(wrapper) Run and protect: disconnectStorageServer, Return response: {'statuslist': [{'status': 477, 'id': '00000000-0000-0000-0000-000000000000'}]} In same time i can mount NFS volume by hands without any errors. Can i use the same NFS server for ISO domain i different datacenter ? Is my case bug or technical limit ? Thanks for you answers.