FYI, SCSIDISC requires a LUN zero exist and be accessible in each storage controller to be scanned.
Assuming non-NPIV, If one's using IBM San Volume Controller then consider having the very first LUN (LUN 0000) that each of its I/O Groups maps to your host (mainframe) be a minimal size LUN that will exist but not normally be used. That way its always free for SCSIDISC's need. Otherwise if LUN zero's in use by z/VM CP or a linux guest, SCSIDISC can't use it to scan the LUN's storage controller (SVC I/O Group). -------------------------------------------------------- This e-mail, including any attachments, may be confidential, privileged or otherwise legally protected. It is intended only for the addressee. If you received this e-mail in error or from someone who was not authorized to send it to you, do not disseminate, copy or otherwise use this e-mail or its attachments. Please notify the sender immediately by reply e-mail and delete the e-mail from your system. ________________________________ From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Steve Wilkins Sent: Wednesday, November 21, 2007 10:49 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Questions about LUN DASD volumes SCSIDISC (the SCSI Discovery Tool) is a sample exec which provides target port and LUN information so one can "discover" the LUN topology which hangs off a System z FCP Subchannel. The help file for the tool (SCSIDISC SAMPHELP) indicates that it is "Located on MAINT 194 or 2C2 disk". Regards, Steve. Steve Wilkins IBM z/VM Development Inactive hide details for Alain Benveniste <[EMAIL PROTECTED]>Alain Benveniste <[EMAIL PROTECTED]> Alain Benveniste <[EMAIL PROTECTED]> Sent by: The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> 11/21/2007 10:07 AM Please respond to The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> To IBMVM@LISTSERV.UARK.EDU cc Subject Re: Questions about LUN DASD volumes Speaking with the OPEN guys, the major problem say have when they restore on a D/R site is to exactly map their requirements to what they find in the new DASD array. So the problem appears when they want to restore a group of LUNs (meta volume) to preserve data coherence. Does a CP cmd exist to get this info. I presume the query edev is for LUN only ? Alain Benveniste
