VIRTUAL STORAGE MANAGEMENT DEVICE, VIRTUAL STORAGE MANAGEMENT METHOD AND VIRTUAL STORAGE MANAGEMENT PROGRAM

摘要

PROBLEM TO BE SOLVED: To smoothly perform dynamic link control without stopping a system.SOLUTION: A virtual storage management device 1 performing virtual storage management of a segmentation method comprises: a main LM execution part 2 executing a main LM which requests a dynamic link from a sub-LM by assigning it to an empty segment of one area among virtual storage space divided into multiple areas; a determination part 31 determining whether or not there exists the empty segment to which the sub-LM can be assigned in the one area if the main LM requests the dynamic link; and a dynamic link execution part 32 executing the dynamic link after changing mapping of the virtual storage space to reduce other areas having the empty segment and enlarge the one area, if the empty segment to which the sub-LM can be assigned does not exist in the one area.