Poblems encountered :

I was able to create a 3 nodes cluster, create a VM or store a converted KVM Virtual machine on it with differents degrees of redundancies without so much troubles...

 

But i had a LOT of issues, to maintain the cluster membership, indeed after a while, the cluster's integrity is lost.

It seems that some machines left the cluster even if they're still up (they are still members of corosync cluster but not members of sheepdog cluster anymore).

Sometimes i can get them back in the cluster by restarting the sheep daemon on every machines but most of the times i had to manually clean the storage on every machines and format the cluster again (of course all the data are lost...)

 

The same thing happened when i tried to add or remove a machine of the cluster...

 

i spent most of my time trying to understand those events without real success....

 

 

http://www.tdeig.ch/kvm/Golliet_RPS.pdf