Hi All, 

I did began a very big project, I've started upgrade a cluster from 3.5 to 
4.3... 
It was a mistake:( 
Since upgrade, I can't start the host. The UI seems to working fine. 


[root@virt ~]# service vdsm-network start 
Redirecting to /bin/systemctl start vdsm-network.service 
Job for vdsm-network.service failed because the control process exited with 
error code. See "systemctl status vdsm-network.service" and "journalctl -xe" 
for details. 
[root@virt ~]# service vdsm-network status 
Redirecting to /bin/systemctl status vdsm-network.service 
● vdsm-network.service - Virtual Desktop Server Manager network restoration 
Loaded: loaded (/usr/lib/systemd/system/vdsm-network.service; disabled; vendor 
preset: enabled) 
Active: failed (Result: exit-code) since Thu 2019-04-04 15:03:44 CEST; 6s ago 
Process: 19325 ExecStart=/usr/bin/vdsm-tool restore-nets (code=exited, 
status=1/FAILURE) 
Process: 19313 ExecStartPre=/usr/bin/vdsm-tool --vvverbose --append 
--logfile=/var/log/vdsm/upgrade.log upgrade-unified-persistence (code=exited, 
status=0/SUCCESS) 
Main PID: 19325 (code=exited, status=1/FAILURE) 

Apr 04 15:03:44 virt.bolax.hu vdsm-tool[19325]: return 
tool_command[cmd]["command"](*args) 
Apr 04 15:03:44 virt.bolax.hu vdsm-tool[19325]: File 
"/usr/lib/python2.7/site-packages/vdsm/tool/restore_nets.py", line 41, in 
restore_command 
Apr 04 15:03:44 virt.bolax.hu vdsm-tool[19325]: exec_restore(cmd) 
Apr 04 15:03:44 virt.bolax.hu vdsm-tool[19325]: File 
"/usr/lib/python2.7/site-packages/vdsm/tool/restore_nets.py", line 54, in 
exec_restore 
Apr 04 15:03:44 virt.bolax.hu vdsm-tool[19325]: raise EnvironmentError('Failed 
to restore the persisted networks') 
Apr 04 15:03:44 virt.bolax.hu vdsm-tool[19325]: EnvironmentError: Failed to 
restore the persisted networks 
Apr 04 15:03:44 virt.bolax.hu systemd[1]: vdsm-network.service: main process 
exited, code=exited, status=1/FAILURE 
Apr 04 15:03:44 virt.bolax.hu systemd[1]: Failed to start Virtual Desktop 
Server Manager network restoration. 
Apr 04 15:03:44 virt.bolax.hu systemd[1]: Unit vdsm-network.service entered 
failed state. 
Apr 04 15:03:44 virt.bolax.hu systemd[1]: vdsm-network.service failed. 

Since, the host does not start. 
Apr 04 14:56:00 virt.bolax.hu libvirtd[17705]: 2019-04-04 12:56:00.764+0000: 
17705: error : virNetSocketReadWire:1806 : End of file while reading data: 
Input/output error 
Apr 04 14:56:00 virt.bolax.hu libvirtd[17705]: 2019-04-04 12:56:00.965+0000: 
17709: error : virNetSASLSessionListMechanisms:393 : internal error: cannot 
list SASL ...line 1757) 
Apr 04 14:56:00 virt.bolax.hu libvirtd[17705]: 2019-04-04 12:56:00.966+0000: 
17709: error : remoteDispatchAuthSaslInit:3440 : authentication failed: 
authentication failed 
Apr 04 14:56:00 virt.bolax.hu libvirtd[17705]: 2019-04-04 12:56:00.966+0000: 
17705: error : virNetSocketReadWire:1806 : End of file while reading data: 
Input/output error 
Apr 04 14:56:01 virt.bolax.hu libvirtd[17705]: 2019-04-04 12:56:01.167+0000: 
17710: error : virNetSASLSessionListMechanisms:393 : internal error: cannot 
list SASL ...line 1757) 
Apr 04 14:56:01 virt.bolax.hu libvirtd[17705]: 2019-04-04 12:56:01.167+0000: 
17710: error : remoteDispatchAuthSaslInit:3440 : authentication failed: 
authentication failed 

[root@virt ~]# service vdsm-network status 
Redirecting to /bin/systemctl status vdsm-network.service 
● vdsm-network.service - Virtual Desktop Server Manager network restoration 
Loaded: loaded (/usr/lib/systemd/system/vdsm-network.service; disabled; vendor 
preset: enabled) 
Active: failed (Result: exit-code) since Thu 2019-04-04 15:00:39 CEST; 2min 49s 
ago 
Process: 19079 ExecStart=/usr/bin/vdsm-tool restore-nets (code=exited, 
status=1/FAILURE) 
Process: 19045 ExecStartPre=/usr/bin/vdsm-tool --vvverbose --append 
--logfile=/var/log/vdsm/upgrade.log upgrade-unified-persistence (code=exited, 
status=0/SUCCESS) 
Main PID: 19079 (code=exited, status=1/FAILURE) 



Also, I upgraded to until 4.0 , but it seems to same. I cant reinstall, and 
reactivate the host. 

Originally it was an AIO installation. 

Please help me solve this problem. 



Thanks in advance, 

R 
Tibor 


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