The CP SET LOADDEV command

Abstract

This technote describes the new CP SET LOADDEV command used to IPL a Linux guest from FCP-attached SCSI.

Contents

The new CP SET LOADDEV command is used to provide the parameters that are needed to access a SCSI disk to the machine loader. Parameters to SET LOADDEV include the WWPN and LUN number of the SCSI disk on which Linux resides. For example, to IPL Linux on the SCSI disk that is located at WWPN 5005076300CD9589 and LUN 5303000000000000, use the command:

SET LOADDEV PORTNAME 50050763 00CD9589 LUN 53030000 00000000

The CP QUERY LOADDEV command reports parameters set for the machine loader:

Q LOADDEV
PORTNAME 50050763 00CD9589 LUN 53030000 00000000 BOOTPROG 0
BR_LBA 00000000 00000000

For details on the SET LOADDEV and QUERY LOADDEV commands, consult CP Command and Utility Reference, SC24-6008.

The LOADDEV user directory statement

It is possible to set the machine loader parameters in the user directory entry using the LOADDEV statement. Here, we set the LOADDEV WWPN and LUN parameters using DIRMAINT.

DIRM LOADDEV PORTNAME 5005076300CD9589
DVHXMT1191I Your LOADDEV request has been sent for processing.
Ready; T=0.04/0.05 09:41:48
DVHREQ2288I Your LOADDEV request for LNXSU5 at * has been accepted.
DVHBIU3450I The source for directory entry LNXSU5 has been updated.
DVHBIU3424I The next ONLINE will take place immediately.
DVHBIU3428I Changes made to directory entry LNXSU5 have been placed
DVHBIU3428I online.
DVHREQ2289I Your LOADDEV request for LNXSU5 at * has completed; with RC =
DVHREQ2289I 0.
DIRM LOADDEV LUN 5303000000000000
DVHXMT1191I Your LOADDEV request has been sent for processing.
Ready; T=0.04/0.05 09:42:14
DVHREQ2288I Your LOADDEV request for LNXSU5 at * has been accepted.
DVHBIU3450I The source for directory entry LNXSU5 has been updated.
DVHBIU3424I The next ONLINE will take place immediately.
DVHBIU3428I Changes made to directory entry LNXSU5 have been placed
DVHBIU3428I online.
DVHREQ2289I Your LOADDEV request for LNXSU5 at * has completed; with RC =
DVHREQ2289I 0.

The resulting directory entry is shown below.

USER LNXSU5 LNXSU5 128M 1G G
INCLUDE IBMDFLT
IPL 190 PARM AUTOCR
LOADDEV PORTNAME 5005076300CD9589
LOADDEV LUN 5303000000000000
MACHINE XA
DEDICATE 7104 7138
DEDICATE 7105 7139
DEDICATE 7106 713A
DEDICATE 1605 1605
LINK TCPIP 0592 0592 RR
MDISK 0191 3390 175 25 440U1R

For details on the LOADDEV user directory statement, consult CP Planning and Administration, SC24-6043. See Directory Maintenance Facility Command Reference, SC24-6025, for details on using DIRMAINT.

Special Notices

This material has not been submitted to any formal IBM test and is published AS IS. It has not been the subject of rigorous review. IBM assumes no responsibility for its accuracy or completeness. The use of this information or the implementation of any of these techniques is a client responsibility and depends upon the client's ability to evaluate and integrate them into the client's operational environment.

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Publish Date
30 August 2004


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TIPS0440