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Invoke virtual reserve/release processing for any minidisk that is being shared by two or more guest systems running under the same z/VM operating system.
To invoke virtual reserve/release processing, specify an access mode of MWV in the MDISK statement for the appropriate minidisk in your z/VM directory. For example, to invoke virtual reserve/release processing for the full-pack minidisk 123, specify this MDISK statement:
MDISK 123 3380 000 885 MVSRES MWV MVSREAD MVSWRIT MVSMULT
This statement also indicates what type of device this is (3380), the first cylinder and number of cylinders that define the boundaries of this minidisk (000 and 885), the minidisk label (MVSRES), and various passwords for accessing the device (MVSREAD, MVSWRIT, and MVSMULT).
This MDISK statement defines minidisk 123 for a single guest. Other guests need to issue LINK commands with an access mode of MW in order to use this minidisk. For example, another system would issue this command to write to minidisk 123:
LINK MVS 123 123 MW MVSMULT
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