[ovirt-users] mount_options for hosted_engine storage domain

Hi, I have deployed a small cluster with 2 ovirt hosts and GlusterFS cluster some time ago. And recently during software upgrade I noticed that I made some mistakes during the installation: if the host which was deployed first will be taken down for upgrade (powered off or rebooted) the engine becomes unavailable (even all VM's and hosted engine were migrated to second host in advance). I was thinking that this is due to missing mnt_options=backup-volfile--servers=host1.domain.com;host2.domain.com option for hosted engine storage domain. Is there any good way to fix this? I have tried edit /etc/ovirt-hosted-engine/hosted-engine.conf manually to add missing mnt_options but after while I noticed that those changes are gone. Any suggestions? Thanks in advance! Artem