Hi Alasdair, this is a patch to add a SPC-3 hardware handler. SPC-3 ALUA has provisioning for 'explicit' port group state change via the SET TARGET GROUP STATES command, and some newer storage arrays do benefit from this. Eg HP EVAs and newer EMC Clariions already support explicit ALUA. Please apply. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Markus Rex, HRB 16746 (AG Nürnberg)