Another thing that's good to know: vboxfs (the default VirtualBox file-sharing filesystem) doesn't support mmap().
The are quite a few software that use mmap to access files, especially databases. When that happens, either avoid using the shared folder or switch to using the nfs mount.
The are quite a few software that use mmap to access files, especially databases. When that happens, either avoid using the shared folder or switch to using the nfs mount.
Here is the ticket about it that's been opened 10 years ago: https://www.virtualbox.org/ticket/819