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Space Imbalance in ASM Normal Redundancy Diskgroup Having a Quorum Failgroup (Doc ID 1379665.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1.0 to 11.2.0.3 [Release 11.2]
Information in this document applies to any platform.
From 11.2.0.1 ,less than 11.2.0.4


Symptoms

You have a normal redundancy diskgroup on 11.2 having 3 failgroups. And one of them is a small quorum failgroup.
There are equal number of disks in the two regular failgroups and all of them are of the same size.
The quorum/NFS failgroup has one disk of very small size.

When you are querying v$asm_disk, you see uneven space utilization:

GROUP_NUMBER PATH                              FAILGROUP    TOTAL_MB    FREE_MB
------------ ------------------------------ -----------------------------------
1            /dev/mapper/DATAC1_139_00738p1     F1          142544      11732
1            /dev/mapper/DATAC1_139_019D0p1     F1          142544      14615
1            /dev/mapper/DATAC1_139_01958p1     F1          142544      16371
1            /dev/mapper/DATAC1_139_017D8p1     F1          142544      18088
1            /dev/mapper/DATAC1_139_01950p1     F1          142544      54023
1            /dev/mapper/DATAC1_139_017D0p1     F1          142544      54102
1            /dev/mapper/DATAC1_139_011C8p1     F1          142544      60163
:::::::::::::::::::::::::::::::
1            /dev/mapper/DATAC2_139_00618p1     F2          142544      13786
1            /dev/mapper/DATAC2_139_00E58p1     F2          142544      19384
1            /dev/mapper/DATAC2_139_01340p1     F2          142544      22428
1            /dev/mapper/DATAC2_139_00DF0p1     F2          142544      25006
1            /dev/mapper/DATAC2_139_00440p1     F2          142544      26822
1            /dev/mapper/DATAC2_139_00438p1     F2          142544      52745
1            /dev/mapper/DATAC2_139_00610p1     F2          142544      54019
::::::::::::::::::::::::::::::::
1            /votediskseco2/nfs_votedisk        NFS           1024        990

 

You can also see detailed space distribution within diskgroup by using the query below:

 

 

 

Changes

You have successfully run the rebalance. Also 'check all norepair' does not report any issue.

Cause

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