Deconfiguring Oracle ASM Filter Driver in an Oracle Grid Infrastructure Standalone (Oracle Restart) Environment

Perform the following steps to deconfigure Oracle ASM Filter Driver in an Oracle Grid Infrastructure standalone environment:

Update the Oracle ASM disk discovery string to enable Oracle ASM to discover disk devices after Oracle ASMFD is deconfigured.

For information about updating the Oracle ASM disk discovery string, refer to "Updating the Oracle ASM ASM_DISKSTRING Parameter for Oracle ASM Filter Driver Disks".
Log in as the root user and stop Oracle Grid Infrastructure for a standalone server using the following command:
```
# $ORACLE_HOME/bin/crsctl stop has
```
If the previous command returns an error, then use the following command:
```
# $ORACLE_HOME/bin/crsctl stop has -f
```
As root, stop Oracle ACFS kernel modules to ensure the most reliable shutdown:
```
# $ORACLE_HOME/bin/acfsload stop
```
For information about the acfsload command, refer to "acfsload".

As root, deconfigure Oracle ASMFD:

# $ORACLE_HOME/bin/asmcmd afd_deconfigure

As root, start ACFS kernel modules:
```
# $ORACLE_HOME/bin/acfsload start
```
For information about the acfsload command, refer to "acfsload".
As root, start Oracle Grid Infrastructure for a standalone server:
```
# $ORACLE_HOME/bin/crsctl start has
```
As the Oracle Grid Infrastructure standalone server owner verify the Oracle ASMFD status:
```
$ $ORACLE_HOME/bin/asmcmd afd_state
```
For information about checking on the state of the Oracle ASM Filter Driver, refer to "Determining Whether Oracle ASM Filter Driver Has Been Configured".
As the Oracle Grid Infrastructure standalone server owner update the Oracle ASM disk discovery string to remove the Oracle ASMFD paths:
```
$ $ORACLE_HOME/bin/asmcmd dsget

$ $ORACLE_HOME/bin/asmcmd dsset old_diskstring
```
Check the current value of the Oracle ASM disk discovery string before updating the value. The old_diskstring value is the old disk discovery string value before updating with the AFD: (Oracle ASMFD) paths.

For information about updating the Oracle ASM discovery string, refer to "Updating the Oracle ASM ASM_DISKSTRING Parameter for Oracle ASM Filter Driver Disks".

For information about updating the Oracle ASM Filter Driver discovery disk discovery string, refer to "Updating the Oracle ASM Filter Driver AFD_DISKSTRING Parameter".