[Nacraile]

Ah, somehow I missed the part where you mentioned you wanted to use a shared-disk FS. That puts you in the unenviable position of wanting to use properly a niche feature that would be misused to catastrophic effect more often than not.

[mdekkers]

Indeed! Technically, what I need is possible. I appreciate the need to keep support calls to a minimum, especially when they are of the "I thought this would be a good idea but all my data is now shredded" type. However, if there were an option to contact support to have something enabled, or some other way to enable this, that would be really cool.