ACFS File system creation Step by Step

Manual Creation of ACFS filesystem

Create the directory for the acfs in each node.
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# mkdir -p /oracle/app/oracle/acfsmounts/data_acfsvol3

Change the permission:
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# chown oracle:oinstall /oracle/app/oracle/acfsmounts/data_acfsvol3

Create the Volume for acfs:
====================
[oracle@rac1 ~]$ grid
[oracle@rac1 ~]$ cd $ORACLE_HOME
/oracle/app/12.1.0/grid
[oracle@rac1 ~]$ sqlplus / as sysasm

SQL> ALTER DISKGROUP DATA ADD VOLUME ACFSVOL3 SIZE 10G;

Diskgroup altered.

SQL>

Create the filesystem:
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[oracle@rac1 ~]$ /sbin/mkfs -t acfs -b 4k /dev/asm/acfsvo13-301 -n "ASMVOL3"
mkfs.acfs: version                   = 11.2.0.1.0.0
mkfs.acfs: on-disk version           = 39.0
mkfs.acfs: volume                    = /dev/asm/acfsvol3-301
mkfs.acfs: volume size               = 10737418240
mkfs.acfs: Format complete.
[oracle@rac1 ~]$


Register the filesystem.
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[oracle@rac1 ~]$ /sbin/acfsutil registry -f -a /dev/asm/acfsvol3-301 /oracle/app/oracle/acfsmounts/data_acfsvol3

acfsutil registry: mount point /oracle/app/oracle/acfsmounts/data_acfsvol3 successfully added to Oracle Registry

[oracle@rac1 ~]$

/bin/mount -t acfs /dev/asm/acfsvol3-301 /oracle/app/oracle/acfsmounts/data_acfsvol3

Check the acfs filesystem by creating a file
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Node1:
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[oracle@rac1 ~]$cd /oracle/app/oracle/acfsmounts/data_acfsvol1
[oracle@rac1 data_acfsvol1]$ echo "This is a test"> test.txt
[oracle@rac1 data_acfsvol1]$ ls -al
total 80
drwxrwx--- 4 root   dba       4096 Dec 29 12:39 .
drwxr-xr-x 3 root   root      4096 Dec 29 12:24 ..
drwx------ 2 root   root     65536 Dec 29 12:24 lost+found
-rw-r--r-- 1 oracle oinstall    15 Dec 29 12:39 test.txt
[oracle@rac1 data_acfsvol1]$

Node2:
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[oracle@rac2 ~]$cd /oracle/app/oracle/acfsmounts/data_acfsvol1
[oracle@rac2 data_acfsvol1]$ echo "This is a test"> test.txt
[oracle@rac2 data_acfsvol1]$ ls -al
total 80
drwxrwx--- 4 root   dba       4096 Dec 29 12:39 .
drwxr-xr-x 3 root   root      4096 Dec 29 12:24 ..
drwx------ 2 root   root     65536 Dec 29 12:24 lost+found
-rw-r--r-- 1 oracle oinstall    15 Dec 29 12:39 test.txt
[oracle@rac2 data_acfsvol1]$

To mount and unmount acfs filesystem:
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To mount:
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# /sbin/mount.acfs -o all

To unmount:
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# /bin/umount -t acfs -a