I have a Xen 8.1 VM running OMV 5.0.5 and am having trouble accessing a USB drive. Specifically, the drive is 12 TB and is partitioned (GPT) into two volumes (each EXT4). The disk shows up correctly under "Disks" in OMV, and I am able to mount the volumes under "File Systems". The problems occur when I try to create a shared volume. I've attached a couple of screenshots. (The log files don't show anything of note).
The drive itself seems okay if I mount it on a separate Linux laptop without going through OMV. The folder "Video2i" exists.
Where am I going wrong?