Filesystem Selection and HDD passthrough

Point 4 is only about partitioning the disk, not formating it. Part 10 is about formating it with a filesystem.
 
Got it, thanks for the reply @Dunuin. To clarify then, if we are talking about EXT4 here in my case (i.e. both Proxmox and OMV are Linux based and can both format an EXT4 filesystem), is there a difference in whether this is done in Proxmox or OMV? I'm guessing it shouldn't matter in that particular case?
 
Usually it shouldn't matter, but this is no real passthrough. The VM is still working with a virtual disk and sector sizes probably will be different (like 512B/4K on the host and 512B/512B logical/physical inside the VM. So I would format it inside the VM.
I also had a problem once, where I passthroughed the whole disk that I partitioned on the PVE host and the VM wasn't able to recognize any partitions. Then I partitioned it inside the VM and as a result the host showed it as an unpartitioned disk.
 
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