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Note: All the posts are based on practical approach avoiding lengthy theory. All have been tested on some development servers. Please don’t test any post on production servers until you are sure.

Thursday, December 11, 2014

ASMCA tabs Volume and ASM Cluster File System are grayed out

DBA wanted to create the ACFS but got the Volume and Cluster File System grayed out.


Load ACFS file system modules
Some file system modules must be loaded before using ACFS. On linux these drivers include:
  • oracleasm, the ASM module;
  • oracleadvm, the ASM dynamic volume manager module;
  • oracleoks, the kernel services module;
  • oracleacfs, the ASM file system module

The modules are installed during Clusterware installation, but except they are not started at system boot by default.

Run acfsload and try again with ASMCA.
[root@SN3-IUB-RV-OD03 dev]# cd /u02/app/11.2.0/grid/bin/
[root@SN3-IUB-RV-OD03 bin]#  ./acfsload start -s

You can check currently loaded modules as root user. 
[root@SN3-IUB-RV-OD03 bin]# lsmod |grep oracle
oracleacfs           1788888  0
oracleadvm            270720  0
oracleoks             420496  2 oracleacfs,oracleadvm
oracleasm              84136  1

You can configure init script to load ACFS modules at system reboot
[root@SN3-IUB-RV-OD03 dev]# vi /etc/init.d/acfsload
#! /bin/ksh
#chkconfig: 2345 30 21
# description: Load Oracle ACFS drivers at system boot
/u02/app/11.2.0/grid/bin/acfsload start -s

[root@SN3-IUB-RV-OD03 bin]# chmod u+x /etc/init.d/acfsload
[root@SN3-IUB-RV-OD03 bin]# chkconfig --add acfsload
[root@SN3-IUB-RV-OD03 bin]# chkconfig --list acfsload
acfsload        0:off   1:off   2:on    3:on    4:on    5:on    6:off
[root@SN3-IUB-RV-OD03 bin]#

Note: the above test done on the non-RAC system, for the RAC you have to do the steps for all involved nodes.

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