> Only a single default route network is allowed

Check your network. vdsmd service has a preexec which you can run to find which module is failing.

systemctl cat vdsmd.service
Then execute the preexec command

Best Regards,
Strahil Nikolov

An ovirt-node machine reboots and shows in the ovirt-manager page:
NonResponsive

Then I went to the Admin console page of this node machine and had the following error reported:

1.Failed command for onn-pool00-tpool.
2.Insufficient free space: 378895 extents needed, but only 2375 available
3.Failed to start Virtual Desktop Server Manager network restoration

Then I can't turn on the vdsmd service either:

[root@ovirt-node04 ~]# systemctl start vdsmd
A dependency job for vdsmd.service failed. See 'journalctl -xe' for details.

Then I use command  'journalctl -xe' show details:
[root@ovirt-node04 ~]# journalctl -xe
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: File "/usr/lib/python2.7/site-packages/vdsm/tool/network.py", line 57, in upgrade_networks
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: netupgrade.upgrade()
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: File "/usr/lib/python2.7/site-packages/vdsm/network/netupgrade.py", line 70, in upgrade
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: _upgrade_unified_configuration(pconfig)
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: File "/usr/lib/python2.7/site-packages/vdsm/network/netupgrade.py", line 110, in _upgrade_unified_configura
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: canonicalize_networks(config.networks)
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: File "/usr/lib/python2.7/site-packages/vdsm/network/canonicalize.py", line 44, in canonicalize_networks
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: _canonicalize_ip_default_route(nets)
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: File "/usr/lib/python2.7/site-packages/vdsm/network/canonicalize.py", line 228, in _canonicalize_ip_default
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: 'Only a single default route network is allowed.')
Apr 19 14:58:20 ovirt-node04 vdsm-tool[55011]: ConfigNetworkError: (21, 'Only a single default route network is allowed.')
Apr 19 14:58:20 ovirt-node04 systemd[1]: vdsm-network.service: control process exited, code=exited status=1
Apr 19 14:58:20 ovirt-node04 systemd[1]: Failed to start Virtual Desktop Server Manager network restoration.
-- Subject: Unit vdsm-network.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit vdsm-network.service has failed.
--
-- The result is failed.
Apr 19 14:58:20 ovirt-node04 systemd[1]: Dependency failed for Virtual Desktop Server Manager.
-- Subject: Unit vdsmd.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit vdsmd.service has failed.
--
-- The result is dependency.
Apr 19 14:58:20 ovirt-node04 systemd[1]: Dependency failed for MOM instance configured for VDSM purposes.
-- Subject: Unit mom-vdsm.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mom-vdsm.service has failed.
--
-- The result is dependency.
Apr 19 14:58:20 ovirt-node04 systemd[1]: Job mom-vdsm.service/start failed with result 'dependency'.
Apr 19 14:58:20 ovirt-node04 systemd[1]: Job vdsmd.service/start failed with result 'dependency'.
Apr 19 14:58:20 ovirt-node04 systemd[1]: Unit vdsm-network.service entered failed state.
Apr 19 14:58:20 ovirt-node04 systemd[1]: vdsm-network.service failed.
Apr 19 14:58:20 ovirt-node04 polkitd[3463]: Unregistered Authentication Agent for unix-process:55005:2145554 (system bus name :1.501, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)

How should I solve the above problem?
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