Unallocated storage information

You can request information about unallocated storage by specifying the SPACE=UNALLOC parameter of the VSMLIST macro. You can obtain this information for CSA and private area subpools only, by specifying SP=CSA or SP=PVT. Figure 1 shows the format of the output for a SPACE=UNALLOC request for CSA or PVT subpools.
Figure 1. Unallocated Storage Information for CSA and PVT Subpools
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Note:
  1. The number of region descriptors and the number of unallocated blocks in each region are given as 31- bit numbers.
  2. Figure 2 shows the format of a region descriptor.
  3. Figure 3 shows the format of an unallocated block descriptor.
Figure 2. Format of Region Descriptor
Byte
Content
0-3
The virtual address of the region (CSA, ECSA, RCT area, V=V area, extended V=V area, or V=R area)
4-7
The length of the region
Figure 3. Format of Unallocated Block Descriptor
Byte
Content
0-3
The virtual address of the unallocated block
4-7
The length of the unallocated block
Parent topic: Using the VSMLIST work area