Index mismatch class NsxFile savesubsetnsx()

[TThomas001]

The function uses DATA_PAGING_SIZE as the subset size but fails to consider file_time_s when calculating mm_length and using np.memmap. This results in an index mismatch and raises a ValueError: mmap length is greater than file size error.

input

• file: ns4
• param: file_time_s=30

env:

• numpy 1.24.3
• python 3.10.12