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Iostat "Illegal Requests" and "Device Not Ready" Counter Increase Every Hour (Doc ID 1905565.1)

Last updated on SEPTEMBER 05, 2018

Applies to:

Solaris Operating System - Version 10 3/05 and later
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on x86-64 (64-bit)

Symptoms

Monitoring system health by looking at "iostat -iE" output will show that error counter "Device Not Ready" and "Hard Error" increase on DVDrom device:

 

Changes

 OS version is Solaris 10 or higher

Cause

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In this Document
Symptoms
Changes
Cause
 1. "Illegal Request" counters increase by one every hour
 2. "Device Not Ready" and "Hard Error" counters increase by one every hour for DVD rom device on Solaris 11
Solution
 1. "Illegal Request" counters increase by one every hour
 2. "Device Not Ready" and "Hard Error" counters increase by one every hour for DVD rom device on Solaris 11
References


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