I have Ubuntu host with VirtualBox. I have ubuntu guest. I have defined an NTFS vbox shared folder of a large partition different from where the host is and from where the virtual disk file is located. I have no problem, when logged into the VM, to read, write create, delete, etc folders and files on the vbox shared folder. This VM has Odoo on it. It is an out-of-the box all-in-one deb package and it creates the Postgres datastore inside the VM -- on the virtual disk file. I tried to use pgadmin3 to create a tablespace on the vbox shared folder because it is large enough to hold all my data, but it doesn't work due to a permissions problem. So four questions: 1.) does it matter, regards permissions, that this vbox shared folder is an NTFS file system? 2.) which level are the permissions enforced, Host, VM or both? 3.) even though my VM user account has full access to the vbox shared folder why can't pgadmin create the datastore folders and files? 4.) how do I change permissions on NTFS file systems and at what level, Host, VM or both? Maybe it would be easier to use an EXT4 file system?
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