How do I force Xen to present same physical disk to multiple guests?
How do I force Xen to present physical devices to multiple guests simultaneously in read-write mode? (Read on before answering!)
I've got about 20 device files (multipath device files corresponding to SAN luns) on my physical host that I want presented read-write to three different guest OSes. By default, Xen tries to prevent me from doing this, which in many cases is understandable.
But what I want to do is legitimate. It's an Oracle environment, and any entity that's going to be writing to the devices in the guest OSes is cluster-aware, and will manage all of the reads/writes internally. This isn't going to be ext3. It will be a lot of OCFS2 and Oracle ASM.
Thanks in advance.