Linux on IBM eServer zSeries and S/390: Performance Toolkit for VM

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Appendix C. Adding VM page space

This appendix explains how to dynamically add page space to z/VM without

system interruption. Note that the process is the same for adding spool space.

This appendix covers the following steps:

򐂰 Verifying the current space allocation

򐂰 Formatting a volume for CP

򐂰 Allocating the page area

򐂰 Adding the volume to the list of CP-owned DASD

򐂰 Validating the CP-owned addition

򐂰 Verifying that the page space was detected by CP

򐂰 Making the dynamic change permanent in the SYSTEM CONFIG file

򐂰 Optional:

– Adding new page volume to MAINT’s directory as a full pack minidisk

– Adding cylinder zero of the new page volume to the $ALLOC$ directory

– Adding the new page area to the $PAGE$ directory

C