We have a couple OLVM instances.  Completely separate with their own managers 
(ovirt-engine).  One is lab and one is prod.
I updated the lab engine from 4.5.4-1.0.31.el8 to 4.5.5-1.22.el8 and as soon as 
that was done and it rebooted I no longer can open VM consoles.

This was the update process followed:
https://docs.oracle.com/en/virtualization/oracle-linux-virtualization-manager/admin/admin-update-engine-she-kvm.html#update-engine-she-kvm

In troubleshooting I checked for the SASL db which appears to be 
/etc/libvirt/passwd.db

# grep sasldb_path /etc/sasl2/libvirt.conf 
sasldb_path: /etc/libvirt/passwd.db

I can verify the vdsm user and realm is in there

# sasldblistusers2 -f /etc/libvirt/passwd.db
vdsm@ovirt: userPassword

We are using noVNC in the browser and when I click on a vm and then console it 
opens a new window and just has the "connecting" message.  I switched to Native 
VNC client and downloaded the console.vv file which looks normal inside and 
when I try and open it with vnc viewer or remote-viewer etc. I get a window 
that connects, authenticates with the password found in the console.vv but then 
presented with a display that says "Guest has not initialized the display 
(yet)."

Thinking perhaps I need to update the KVM hosts too I proceeded with the update 
document listed above but even with the hosts updated nothing has changed.

If I tail /var/log/messages when opening a console connection all I see is this:
Oct 14 10:33:52 olvm2 kernel: sd 6:0:0:1: Warning! Received an indication that 
the LUN reached a thin provisioning soft threshold.
Oct 14 10:34:41 olvm2 saslpasswd2[55701]: error deleting entry from sasldb: 
BDB0073 DB_NOTFOUND: No matching key/data pair found
Oct 14 10:34:41 olvm2 saslpasswd2[55701]: error deleting entry from sasldb: 
BDB0073 DB_NOTFOUND: No matching key/data pair found
Oct 14 10:34:41 olvm2 saslpasswd2[55701]: error deleting entry from sasldb: 
BDB0073 DB_NOTFOUND: No matching key/data pair found
Oct 14 10:34:41 olvm2 saslpasswd2[55701]: error deleting entry from sasldb: 
BDB0073 DB_NOTFOUND: No matching key/data pair found

I checked the production OLVM cluster which has not been updated and has a 
properly functioning vnc consoles and it produces the exact same errors shown 
above in the logs when opening a console.  So I don't think that error is the 
cause if the issue although likely something that needs to be fixed.

If I check the VM guest log when opening a console I get nothing.
tail -f /var/log/libvirt/qemu/<vm_hostname>.log

Has anyone else run into this issue when updating?  Any ideas on what more I 
can look at or troubleshoot?

Thanks
Malcolm
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