Hello Gary, as far as i know upgrade path isn't direct and you have to migrate first to 4.0, then 4.1 and finally 4.2. You can migrate vms from 3.6 to 4.0 IIRC. But don't know if mixing 4.2 and 3.6 it's possible. Luca On Fri, Feb 9, 2018 at 3:06 PM, Gary Lloyd <g.lloyd(a)keele.ac.uk&gt; wrote: -- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) "Internet è la più grande biblioteca del mondo. Ma il problema è che i libri sono tutti sparsi sul pavimento" John Allen Paulos, Matematico (1945-vivente) Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca(a)gmail.com&gt;

Hi Yaniv We attempted to share the code a few years back, but I don't think it got accepted. In vdsm.conf we have two bridged interfaces, each connected to a SAN uplink: [irs] iscsi_default_ifaces = san1,san2 And here is a diff of the file /usr/lib/python2.7/site-packages/vdsm/storage/ vs the original for vdsm-4.20.17-1 : 463,498c463,464 < < # Original Code ## < < #iscsi.addIscsiNode(self._iface, self._target, self._cred) < #timeout = config.getint("irs", "udev_settle_timeout") < #udevadm.settle(timeout) < < ### Altered Code for EqualLogic Direct LUNs for Keele University : G.Lloyd ### < < ifaceNames = config.get('irs', 'iscsi_default_ifaces').split(',') < if not ifaceNames: < iscsi.addIscsiNode(self._iface, self._target, self._cred) < else: < self.log.debug("Connecting on interfaces: {}".format(ifaceNames)) < #for ifaceName in ifaceNames: < success = False < while ifaceNames: < self.log.debug("Remaining interfaces to try: {}".format(ifaceNames)) < ifaceName = ifaceNames.pop() < try: < self.log.debug("Connecting on {}".format(ifaceName)) < iscsi.addIscsiNode(iscsi.IscsiInterface(ifaceName), self._target, self._cred) < self.log.debug("Success connecting on {}".format(ifaceName)) < success = True < except: < self.log.debug("Failure connecting on interface {}".format(ifaceName)) < if ifaceNames: < self.log.debug("More iscsi interfaces to try, continuing") < pass < elif success: < self.log.debug("Already succeded on an interface, continuing") < pass < else: < self.log.debug("Could not connect to iscsi target on any interface, raising exception") < raise < timeout = config.getint("irs", "scsi_settle_timeout") --- 501,502d466 < ### End of Custom Alterations ### < Regards *Gary Lloyd* ________________________________________________ I.T. Systems:Keele University Finance & IT Directorate Keele:Staffs:IC1 Building:ST5 5NB:UK +44 1782 733063 <%2B44%201782%20733073> ________________________________________________ On 11 February 2018 at 08:38, Yaniv Kaul <ykaul(a)redhat.com&gt; wrote: