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Mouhamadou Diaw

Oracle 18c: Cluster With Oracle ASM Filter Driver

During the installation of Oracle Grid Infrastructure, you can optionally enable automated installation and configuration of Oracle ASM Filter Driver for your system with the Configure ASM Filter Driver check box on the Create ASM Disk Group wizard page. When you enable the Configure ASM Filter Driver box, an automated process for Oracle ASMFD is launched during Oracle Grid Infrastructure installation.

If Oracle ASMLIB exists on your Linux system, then deinstall Oracle ASMLIB before installing Oracle Grid Infrastructure, so that you can choose to install and configure Oracle ASMFD during an Oracle Grid Infrastructure installation.
In this blog I do install a 2 nodes cluster of Oracle 18c using Oracle ASMFD. Below the disks we will use.

[root@rac18ca ~]# ls -l /dev/sd[d-f]
brw-rw----. 1 root disk 8, 48 Sep  8 22:09 /dev/sdd
brw-rw----. 1 root disk 8, 64 Sep  8 22:09 /dev/sde
brw-rw----. 1 root disk 8, 80 Sep  8 22:09 /dev/sdf
[root@rac18ca ~]#

[root@rac18cb ~]# ls -l /dev/sd[d-f]
brw-rw----. 1 root disk 8, 48 Sep  8 22:46 /dev/sdd
brw-rw----. 1 root disk 8, 64 Sep  8 22:46 /dev/sde
brw-rw----. 1 root disk 8, 80 Sep  8 22:46 /dev/sdf
[root@rac18cb ~]#

We suppose that all prerequisites are done (public IP, private IP, scan,shared disks ….). Also we will not show all print screens.
The first step is to unzip the Oracle software in the ORACLE_HOME for the grid infrastructure.

unzip -d /u01/app/grid/18.0.0.0 LINUX.X64_180000_grid_home.zip

After we have to use the ASMCMD afd_label command to provision disk devices for use with Oracle ASM Filter Driver as follows.

[root@rac18ca ~]# export ORACLE_HOME=/u01/app/oracle/18.0.0.0/grid
[root@rac18ca ~]# export ORACLE_BASE=/tmp                                       
[root@rac18ca ~]# /u01/app/oracle/18.0.0.0/grid/bin/asmcmd afd_label VOTOCR /dev/sde --init
[root@rac18ca ~]# /u01/app/oracle/18.0.0.0/grid/bin/asmcmd afd_label DATA /dev/sdd --init
[root@rac18ca ~]# /u01/app/oracle/18.0.0.0/grid/bin/asmcmd afd_label DIVERS /dev/sdf --init
[root@rac18ca ~]#

And then we can use the ASMCMD afd_lslbl command to verify the device has been marked for use with Oracle ASMFD.

[root@rac18ca network-scripts]# /u01/app/oracle/18.0.0.0/grid/bin/asmcmd afd_lsl                              bl /dev/sde
--------------------------------------------------------------------------------
Label                     Duplicate  Path
================================================================================
VOTOCR                                /dev/sde
[root@rac18ca network-scripts]# /u01/app/oracle/18.0.0.0/grid/bin/asmcmd afd_lslbl /dev/sdd
--------------------------------------------------------------------------------
Label                     Duplicate  Path
================================================================================
DATA                                  /dev/sdd
[root@rac18ca network-scripts]# /u01/app/oracle/18.0.0.0/grid/bin/asmcmd afd_lslbl /dev/sdf
--------------------------------------------------------------------------------
Label                     Duplicate  Path
================================================================================
DIVERS                                /dev/sdf
[root@rac18ca network-scripts]#

Now that disks are initialized for ASMFD, we can start the installation.

[oracle@rac18ca grid]$ ./gridSetup.sh

We will not show all the pictures.

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And in next window, we can choose the disks for the OCR and Voting files. We will also check Configure Oracle ASM Filter Driver.

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And then continue the installation. We will have to run the orainstRoot.sh and the root.sh scripts. All these steps are not shown here.
At the end of the installation we can verify the status of the cluster

[oracle@rac18cb ~]$ crsctl query crs activeversion
Oracle Clusterware active version on the cluster is [18.0.0.0.0]

[oracle@rac18ca ~]$ crsctl status resource -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
ora.DG_DATA.dg
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
ora.DG_VOTOCR.dg
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
ora.net1.network
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
ora.ons
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
ora.proxy_advm
               ONLINE  ONLINE       rac18ca                  STABLE
               ONLINE  ONLINE       rac18cb                  STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       rac18ca                  STABLE
ora.MGMTLSNR
      1        OFFLINE OFFLINE                               STABLE
ora.asm
      1        ONLINE  ONLINE       rac18ca                  Started,STABLE
      2        ONLINE  ONLINE       rac18cb                  Started,STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cvu
      1        ONLINE  ONLINE       rac18ca                  STABLE
ora.mgmtdb
      1        OFFLINE OFFLINE                               STABLE
ora.qosmserver
      1        ONLINE  ONLINE       rac18ca                  STABLE
ora.rac18ca.vip
      1        ONLINE  ONLINE       rac18ca                  STABLE
ora.rac18cb.vip
      1        ONLINE  ONLINE       rac18cb                  STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       rac18ca                  STABLE
--------------------------------------------------------------------------------
[oracle@rac18ca ~]$

We also can check that ASMFD is enabled.

[oracle@rac18ca ~]$ asmcmd afd_lsdsk
--------------------------------------------------------------------------------
Label                     Filtering   Path
================================================================================
DATA                        ENABLED   /dev/sdd
DIVERS                      ENABLED   /dev/sdf
VOTOCR                      ENABLED   /dev/sde
[oracle@rac18ca ~]$


[oracle@rac18ca ~]$ asmcmd dsget
parameter:/dev/sd*, AFD:*
profile:/dev/sd*,AFD:*
[oracle@rac18ca ~]$

[oracle@rac18ca ~]$ asmcmd lsdsk
Path
AFD:DATA
AFD:DIVERS
AFD:VOTOCR
[oracle@rac18ca ~]$

Conclusion
In this blog we have seen how we can install a cluster using ASMFD

 

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Mouhamadou Diaw
Mouhamadou Diaw

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