Do guest VMs communicate with external file systems through host

[Fidelity]

Hi,
A question I think only the Devs can answer:

I have a guest Windows VM under Redhat and that host is clustered with 2 other Redhat nodes. All three nodes can see a GFS2 SAN SCSI storage device.
The GFS2 file system is mounted on a folder on the 3 RH nodes and is also set as a shared folder in Virtualbox so all 3+1 machines can now see the SAN storage.

So my question is about file locking. Does the Windows VM talk to the SAN file system through the host kernel, if so then I believe file locking should work fine, if not then it definitely won't.
Thank you for reading

Regards

Paul

[noteirak]

I would recommend you ask this question on the dev mailing list - this forum is dedicated to the API usage via the SDK, not for VBox implementation details.