How to configure ACFS - ASM Cluster File System and EXT3 file system

In Oracle 11gR2 Grid Infrastructure, Oracle introduces the ASM Cluster file system, or ACFS.  It provides shared, cluster-wide access to various type files like database binaries, user data, reports, configuration files, BFILEs, trace files and alerts.

Below are all the steps to setup ACFS file system or EXT3 file system via ACFS.
1)  Pre-checking for ACFS configuration:

+ASM1 > cluvfy stage -pre acfscfg -n racapp1,racapp2-verbose

2) Create DG_POC_ACFS diskgroup

cat /apps/oracle/work/an/dg_acfs.xml to view contain

<dg name="DG_POC_ACFS" redundancy="external">

    <dsk string="ORCL:ORADATA_DD501_DISK11" />

    <dsk string="ORCL:ORADATA_DD501_DISK12" />

    <dsk string="ORCL:ORADATA_DD501_DISK13" />

    <a name="compatible.asm" value="11.2"/>

    <a name="compatible.rdbms" value="11.2"/>

</dg>

+ASM1 > asmcmd mkdg /apps/oracle/work/an/dg_acfs.xml

3) Create ASM volume

ASMCMD> volcreate -G DG_POC_ACFS -s 128g vol_share

ASMCMD> volinfo -a

Diskgroup Name: DG_POC_ACFS

         Volume Name: VOL_SHARE

         Volume Device: /dev/asm/vol_share-356

         State: ENABLED

         Size (MB): 131072

         Resize Unit (MB): 256

         Redundancy: UNPROT

         Stripe Columns: 4

         Stripe Width (K): 128

         Usage:

         Mountpath:

4) Create the ACFS file system

as root

/sbin/mkfs -t acfs -n "DBA Share FS" /dev/asm/vol_share-356

mkfs.acfs: version                   = 11.2.0.2.0

mkfs.acfs: on-disk version           = 39.0

mkfs.acfs: volume                    = /dev/asm/vol_share-356

mkfs.acfs: volume size               = 137438953472

mkfs.acfs: Format complete.

5) Add acfs registry:

/sbin/acfsutil registry -f -a /dev/asm/vol_share-356 /share

acfsutil registry: mount point /share successfully added to Oracle Registry

6) Mount /share file system

/bin/mount -t acfs /dev/asm/vol_share-356 /share

Or you can also create it as an EXT3 file system

volcreate -G DG_POC_ACFS -s 128g  vol_dba

mkfs -t ext3 /dev/asm/vol_dba-356

mount /dev/asm/vol_dba-356 /dba

7) Validate Post ACFS configuration

cluvfy stage -post acfscfg -n racapp1,racapp2-verbose