Hi guys,
I have a question. I need to setup a HA storage clustering on Linux. The main objective is to make the cluster HA and as an extra feature load balanced as well. The problem I'm facing with is the whole system is going to run on Hyper-V ;-). That's the tricky bit. All the storage backends and disk presentation will be done by Hyper-V via shared VHDX. Generally this means that Hyper-V ties 2 (or more) hard drives into one and can share it across multiple internal VMs. There is no magic when it comes to Windows side of things as Windows VM supports this solution natively. We have a bit of hard nut to crack if it comes to Linux side of things. So I will be given a shared VHDX for my Linux Storage VM and I need to create a cluster from these shared VHDX'es to make the data HA and resilient. This scenario can be compared to the single SAN storage presenting out the same LUN/disk to multiple VMs at the same time. This is what Windows Hyper-V does in the backend to give me VHSX. Single VHDX needs to be mounted on multiple storage VMs and then these VMs needs to have a cluster aware file system on that VHDX and present it out to the Linux clients which can simultaneously read and write data onto it. I hope this is pretty clear.
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