Description of problem:

On RHEL7 with xfs filesystem on root partition (with default mount options), hosted-engine --deploy exits without any error messages in ovirt-hosted-engine-setup log.

# hosted-engine --deploy
[ INFO  ] Stage: Initializing
[ INFO  ] Generating a temporary VNC password.
[ INFO  ] Stage: Environment setup
          Continuing will configure this host for serving as hypervisor and create a VM where you have to install oVirt Engine afterwards.
          Are you sure you want to continue? (Yes, No)[Yes]: 
          Configuration files: []
          Log file: /var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20150915103503-isrltq.log
          Version: otopi-1.4.0_master (otopi-1.4.0-0.0.master.20150910103318.gitdd73099.el7)
          It has been detected that this program is executed through an SSH connection without using screen.
          Continuing with the installation may lead to broken installation if the network connection fails.
          It is highly recommended to abort the installation and run it inside a screen session using command "screen".
          Do you want to continue anyway? (Yes, No)[No]: Yes
[ INFO  ] Hardware supports virtualization
[ INFO  ] Bridge ovirtmgmt already created
[ INFO  ] Stage: Environment packages setup
[ INFO  ] Stage: Programs detection
[ INFO  ] Stage: Environment setup
# _

This is the last message printed in the log:

2015-09-15 10:26:56 DEBUG otopi.plugins.otopi.services.systemd plugin.execute:941 execute-output: ('/bin/systemctl', 'status', 'vdsmd.service') stderr:


2015-09-15 10:26:56 DEBUG otopi.plugins.ovirt_hosted_engine_setup.system.vdsmenv vdsmenv._connect:62 {'status': {'message': 'Done', 'code': 0}, 'info': {'systemProductName': 'xxxxxxxxxx', 'systemUUID': 'xxxxxxxxx', 'systemSerialNumber': 'xxxxxxx', 'systemFamily': 'xxxxxxxxxx', 'systemManufacturer': 'xxxxxx'}}
Version-Release number of selected component (if applicable):

With ext4 filesystem on / - hosted engine deployment executes without any issues, and continues with the following:

2015-09-15 08:26:18 DEBUG otopi.context context.dumpEnvironment:500 ENVIRONMENT DUMP - BEGIN
2015-09-15 08:26:18 DEBUG otopi.context context.dumpEnvironment:510 ENV OVEHOSTED_VDSM/vdscli=instance:'<ServerProxy for 0.0.0.0:54321/RPC2>'
2015-09-15 08:26:18 DEBUG otopi.context context.dumpEnvironment:514 ENVIRONMENT DUMP - END
2015-09-15 08:26:18 DEBUG otopi.context context._executeMethod:142 Stage late_setup METHOD otopi.plugins.ovirt_hosted_engine_setup.pki.vdsmpki.Plugin._late_setup


How reproducible:

Always.

Steps to Reproduce:
1. Install RHEL7 with root xfs filesystem
2. Run hosted-engine --deploy

Additional info:

Versions affected: 3.5.4, 3.6-snapshot