[sheepdog-users] 2 node set-up and multiple disks

[bolle at geodb.org]

Hello all

I'm testing a 2 node Sheepdog cluster (v0.8.3) with KVM (Ubuntu 16.04) 
using Corosync. Each Sheepdog node has 2 disks (multiple disk) and will 
host some VMs. For each VDI of the VMs, there should be 3 copies using 
erasure coding. I don't need high availability.

My plan is to get the following:

  - Each KVM / Sheepdog node hosts their own VMs, the VDI should be 
stored with 2 copies on each local disks and on 1 remote disk if 
possible

  - If the network gets interrupted, each node should stay running by 
their own

  - If a disk dies, the cluster should continue running and redistribute 
the objects

  - If a node dies, I should be able to manually start the VMs on the 
other node after the VDIs have 2 copies on it

I will make sure, that there is enough disk space to host 2 copies of 
all VDIs on each node. My goal is not to save disk space. I want a 
reliable storage for the VDI which would survive a hardware failure of 
one node.

Is this set-up possible ? Are there any advices / hints ?

Thanks in advance
Andreas