**System Information**
Operating system: Windows 11
Graphics card: NVIDIA GeForce RTX 2070 Super
**Blender Version**
Broken: 3.2.2
Worked: None
**Short description of error**
.blend file size increases with 'Automatically pack resources' when OpenVDB volume is in scene. As far as I know OpenVDB is not a packable data and doesn't show up in the scene if the original VDB files are deleted. However when 'Automatically pack resources' is turned on, blend file size increases exactly as much as the file sizes of VDB files but doesn't work at all when original VDB files are deleted.
**Exact steps for others to reproduce the error**
1. In an empty scene, {key shift A} to add an object and {nav Volume > Import OpenVDB}
1. Import the attached VDB file
1. Save the file (Note that the file size is something around 800 KB)
1. {nav File > External Data > Pack Resources} or Turn `Automatically pack resources` on
1. Save the blend file (Note that the file size is something around 6.800 KB)
1. Delete original VDB files
1. Revert or Reopen the saved .blend file
1. Although the size is larger, when you open the blend file again, volume object shows nothing.
{F13413732}