hi,

We have a cluster of 20 hosts running ovirt 4.1.7 . And it became unstable.

the data is stored on an HP Apllo 4530, with freeNAS and a cahce drive (optene) , a 10G network between hosts

the problems we see: 

        HE is jumping between hosts and crashes all the time, and even more  when global maintenance is disabled. 

        Another issue is that vms get cpu stuck messages. And hang for 10-20 seconds.

any suggestions as for where / what to look for ?