I just run into the following build failure when building flatpak-sdk in koji:

error: ostree-tar: Failed to handle file: ostree-tar: Failed to import file: Writing content object: min-free-space-percent '3%' would be exceeded, at least 4.1 kB requested

@kevin says that the netapp volumes are 'flex' (which means that the grow and shrink automatically), and often still have a huge amount of space available even if it's just 3% remaining. In this case, it had less than 3% but still 5 TB. I think it might be worth disabling the percentage check for koji builds - it's not going to be right for huge volumes and it's not a personal computer where running out of space can crash the session or something like that.