[Users] Datacenter is down

[Mario Giammarco]

Hello,
after some shutdowns and reboots of my ovirt cluster now the data center is
down:

- gluster volumes are all UP
- all storage (Data/ISO) is inactive
- Datacenter is down.

I have tried to click on all "activate" buttons I have found but nothing
happens.

Only one time I got:

- failed to activate storage domain
- "failed to reconstruct master domain for data center"

What can I do now??

Thanks,
Mario