This is still an issue in 1.7.2.
Guys, can't you just pause the process when the disk space is low?
How many disk space you have?
Have you another disk?
How many photos in project's chunk?
In my project now 20000 photos. We use M.2 SSD 500Gb disk as project's storage. How I solve problem with free space? i use region to make model's part, and when I need to make another part - I just make offset region position to half size in any axis (by script).