Hi community!
 
An error occurred during the upgrade procedure from version 4.2.8.2-1.el7. How is debugging possible?
 
otopi.plugins.ovirt_engine_setup.ovirt_engine.network.ovirtproviderovn.Plugin._restart_ovn_services
2020-03-31 21:56:47,184+0300 DEBUG otopi.context context._executeMethod:136 otopi.plugins.ovirt_engine_setup.ovirt_engine.network.ovirtproviderovn.Plugin._restart_ovn_services condition False
2020-03-31 21:56:47,188+0300 DEBUG otopi.context context._executeMethod:127 Stage misc METHOD otopi.plugins.ovirt_engine_setup.ovirt_engine.network.ovirtproviderovn.Plugin._upgrade
2020-03-31 21:56:47,188+0300 DEBUG otopi.context context._executeMethod:145 method exception
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/otopi/context.py", line 132, in _executeMethod
    method['method']()
  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/network/ovirtproviderovn.py", line 941, in _upgrade
    self._update_ovn_key_file_permissions()
  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/network/ovirtproviderovn.py", line 950, in _update_ovn_key_file_permissions
    True
  File "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/network/ovirtproviderovn.py", line 584, in _sanitize_ovn_key_file_permissions
    desired_gid = grp.getgrnam('hugetlbfs').gr_gid
KeyError: 'getgrnam(): name not found: hugetlbfs'
2020-03-31 21:56:47,189+0300 ERROR otopi.context context._executeMethod:154 Failed to execute stage 'Misc configuration': 'getgrnam(): name not found: hugetlbfs'
2020-03-31 21:56:47,190+0300 DEBUG otopi.transaction transaction.abort:119 aborting 'Yum Transaction'
2020-03-31 21:56:47,190+0300 INFO otopi.plugins.otopi.packagers.yumpackager yumpackager.info:80 Yum Performing yum transaction rollback