Oracle DBA – A lifelong learning experience

Huge asm_rbal_trace file with text UNINDENT OF DISK

Posted by John Hallas on May 3, 2012

You may notice a large and growing trace file in diag dest which contains numerous lines starting with the phrase “NOTE: Unident of disk ” followed by a disk path.

*** 2012-04-17 18:31:10.759
NOTE:Unident of disk:/dev/oracle_hr/rdisk130
NOTE:Unident of disk:/dev/oracle_hr/rdisk131
NOTE:Unident of disk:/dev/oracle_hr/rdisk132
NOTE:Unident of disk:/dev/oracle_hr/rdisk133
NOTE:Unident of disk:/dev/oracle_hr/rdisk134
NOTE:Unident of disk:/dev/oracle_hr/rdisk135
NOTE:Unident of disk:/dev/oracle_hr/rdisk136
NOTE:Unident of disk:/dev/oracle_hr/rdisk137
NOTE:Unident of disk:/dev/oracle_hr/rdisk138
NOTE:Unident of disk:/dev/oracle_hr/rdisk139
NOTE:Unident of disk:/dev/oracle_hr/rdisk129

*** 2012-04-17 19:05:20.540
NOTE:Unident of disk:/dev/oracle_hr/rdisk130
NOTE:Unident of disk:/dev/oracle_hr/rdisk131
NOTE:Unident of disk:/dev/oracle_hr/rdisk132
NOTE:Unident of disk:/dev/oracle_hr/rdisk133
NOTE:Unident of disk:/dev/oracle_hr/rdisk134
NOTE:Unident of disk:/dev/oracle_hr/rdisk135
NOTE:Unident of disk:/dev/oracle_hr/rdisk136
NOTE:Unident of disk:/dev/oracle_hr/rdisk137
NOTE:Unident of disk:/dev/oracle_hr/rdisk138
NOTE:Unident of disk:/dev/oracle_hr/rdisk139
NOTE:Unident of disk:/dev/oracle_hr/rdisk129

These can safely be ignored as they occur when there are candidate disks ready to be added to diskgroups  and the more disks available the bigger the message trail. There is a note on MoS but unfortunately it is not publicly available which is a bit odd as there is nothing secret or controversial about it.  I was sent the note after raising an SR on the matter. Some of the contents are posted below 

The RBAL process constantly posts this message in its trace file:
NOTE:Unident of disk:/dev/oracle_hr/rdisk130
The same message is posted for any candidate disk that is available.

Cause Determination:
There is no harm in this issue. This is just an informational message and doesn’t mean that the disks are taken into consideration for the rebalance operation.

Cause Justification:
This has been investigated in:
13389095     35    HUGE ASM_RBAL TRACE WITH NOTE:UNIDENT OF DISK
and there is no actual error or problem here.
The RBAL process is also responsible for finding the candidate/available disks and the messages like:
“NOTE:Unident of disk:/dev/oracle_hr/rdisk130″
are part of the disk discovery and not part of the rebalance.

Potential Solution:
none, ignore the error messages.
The messages appear to have been removed starting with the 11.2.0.1 release.

Solution Justification:
development confirmed there is no problem with such messages in the aforementioned bug.

Solution/Action Plan/Conclusion: 
These are disk discovery messages, indicating that the disks in the message are being found by the disk discovery process.
They are not showing any rebalance activity involving these disks.
Please ignore them.

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