Exadata: Grid Disk Can Be Resized Beyond A Cell Disk's Physical Size When Flash Cache Compression Is Enabled (Doc ID 1664267.1)

Last updated on FEBRUARY 05, 2015

Applies to:

Oracle Exadata Storage Server Software - Version 11.2.3.3.0 to 11.2.3.3.0 [Release 11.2]
Information in this document applies to any platform.

Symptoms

If you are allowed to create GRID DISK beyond a cell disk's physical size when flash cache compression is enabled, then you may be running into this problem.

 

EXAMPLE

--------------

CellCLI> create griddisk ACFS_FD_01_exa01cel05 celldisk=FD_01_exa01cel05, size=100G

ERROR

-----------------

CELL-02845: Drop all flash cell disks before flash compression can be configured

 

CELL-02845 is an expected error and should be seen because when flash cache compression is enabled, the total size of data grid disks and flash log cannot exceed the physical size of flash disk.

However you are able to bypass this by creating a smaller size and then making resize worked.

 

EXAMPLE

--------------------

CellCLI> create griddisk ACFS_FD_01_exa01cel05 celldisk=FD_01_exa01cel05, size=10G
GridDisk ACFS_FD_01_exa01cel05 successfully created

 

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms