CELL-02788: The number of cell disks exceeds the maximum allowed.

Symptoms:

celldisk can't be create after dropping the celldisk.

Error Message :

CellCLI> create celldisk CD_07_xxx_ex_mg_cel01 lun=0_7

CELL-04527: Cannot complete the creation of cell disk CD_07_xxx_ex_adm_cel01. Received error: CELL-02788: The number of cell disks exceeds the maximum allowed.
Cell disks are not created: CD_07_xxx_ex_mg_cel01

CellCLI>


Cause:

Please check the Exadata Rack Configuration Type ( Full / Quarter / Half ) :

# grep -i MACHINETYPES /opt/oracle.SupportTools/onecommand/databasemachine.xml

If out looks below you have limitation to create the celldisk on the eight rack machine.

<MACHINETYPES>X3-2 Eighth Rack HP</MACHINETYPES>


Solution:

1) Please open a case with oracle support. because you need to enable the Quarter Rack attribute, this is depending with license.


How to enable the attribute:


From one of the Exadata Compute nodes use the dcli utility to set the EightRack attribute to False:

dcli -g cell_group -l celladmin cellcli -e "alter cell eighthRack=false" or run the command individually on all the three cell servers.

After the above restriction is removed,you are should be able to manually re-create the celldisk/griddisks on the Exadata Storage Cell starting from step 4 in MOS document ( Doc ID 1281395.1 )


From compute node dcli:

dcli -g cell_group -l cellcli -e "list cell attributes eighthRack"

dcli -g cell_group -l celladmin cellcli -e "alter cell eighthRack=false"

dcli -g cell_group -l cellcli -e "list cell attributes eighthRack"

Individual login each cellnode as celladmin user:

[celladmin@xxx-ex-adm-cel01 ~]$ cellcli -e "alter cell eighthRack=false"
Cell xxx-ex-adm_cel01 successfully altered
[celladmin@xxx-ex-adm-cel01 ~]$ cellcli -e "list cell attributes eighthRack"
         FALSE
[celladmin@xxx-ex-adm-cel01 ~]$

[celladmin@xxx-ex-adm-cel02 ~]$ cellcli -e "alter cell eighthRack=false"
Cell xxx-ex-adm_cel02 successfully altered
[celladmin@xxx-ex-adm-cel02 ~]$ cellcli -e "list cell attributes eighthRack"
         FALSE
[celladmin@xxx-ex-adm-cel02 ~]$

[celladmin@xxx-ex-adm-cel03 ~]$ cellcli -e "alter cell eighthRack=false"
Cell xxx-ex-adm_cel03 successfully altered
[celladmin@xxx-ex-adm-cel03 ~]$ cellcli -e "list cell attributes eighthRack"
         FALSE
[celladmin@xxx-ex-adm-cel03 ~]$