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On some agent server configurations, the following types of log messages may appear whenever the up.time Monitoring Station attempts to contact the agent: 

Jun 25 19:19:20 server1 kernel: cdrom: open failed. 
Jun 25 19:24:19 server1 last message repeated 2 times 
Jun 25 19:29:31 server1 last message repeated 2 times 

This issue is a symptom of potential configuration changes required on the agent server and not an up.time agent problem. 

The most likely configuration change required is to filter cdrom devices from the /etc/lvm/lvm.conf file on the agent server. 

For example, change:

From: filter = [ "a/.*/" ]
To: filter = [ "r|/dev/cd.*|", "r|/dev/dvd.*|", "a/.*/" ].

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