Oracle 11g ASM: how to create an oracle ACFs File System in asmcmd command line tool

Lab environment: Oracle 11g R2 RAC (11.2.0.3.5) Oracle Enterprise Linux 5.6x86
1. Create an ASM disk group and mount the disk on two nodes. Then, partition the disk on the first node. [root @ Rac1 ~] # Fdisk-ldisk/dev/SDE: 2147 MB, 2147483648 bytes255 heads, 63 sectors/track, 261 cylindersunits = cylinders of 16065*512 = 8225280 bytes
Device boot start end blocks ID system/dev/sde1 1 261 2096451 83 Linux
Create an ASM disk on node 1st [root @ Rac1 ~] # Oracleasm createdisk goldengate/dev/sde1 [root @ Rac1 ~] # Oracleasm scandisks

[Root @ Rac1 ~] # Oracleasm listdisksdatafragoldengateocr_vote scan the ASM disk on node 2nd [root @ rac2 ~] # Oracleasm listdisksdatafragoldengateocr_vote
Switch to the grid user on the first node and execute asmca to create the ASM disk group. Create the Oracle advm volume and diskgroup on the ASM diskgroup. COMPATIBLE.ASMAnd COMPATIBLE.ADVMThe compatibility must be set to 11.2.0.2. You can select "advanced options" when creating a disk group to set this attribute for diskgroup. You can also use SQL commands to create or modify this attribute for a disk group. The method is as follows:

ALTER DISKGROUP goldengate SET ATTRIBUTE 'compatible.asm' = '11.2.0.2';

ALTER DISKGROUP goldengate SET ATTRIBUTE 'compatible.rdbms' = '11.2.0.2';

ALTER DISKGROUP goldengate SET ATTRIBUTE 'compatible.advm' = '11.2.0.2';

2. Create an oracle advm volume
Switch to the grid user and enter the asmcmd command line interface Su-grid

[grid@rac1 ~]$ export ORACLE_SID=+ASM1[grid@rac1 ~]$ asmcmd

Verify the actual size of the created ASM disk.

ASMCMD> lsdgState    Type    Rebal  Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Voting_files  NameMOUNTED  EXTERN  N         512   4096  1048576      5114     3027                0            3027              0             N  DATA/MOUNTED  EXTERN  N         512   4096  1048576      5114     4613                0            4613              0             N  FRA/MOUNTED  EXTERN  N         512   4096  1048576      2047       29                0              29              0             N  GOLDENGATE/MOUNTED  EXTERN  N         512   4096  1048576      2047     1651                0            1651              0             Y  OCR_VOTE/

Create an oracle advm volume

ASMCMD> volcreate -G GOLDENGATE -s 1900m GOLDENGATE

Note that the value specified by the-s option must not exceed the actual size value displayed by the lsdg. Otherwise, the following error is reported:

ASMCMD> volcreate -G GOLDENGATE -s 1950m GOLDENGATEORA-15032: not all alterations performedORA-15041: diskgroup "GOLDENGATE" space exhausted (DBD ERROR: OCIStmtExecute)

Determine whether the Oracle advm volume is created

ASMCMD> volinfo -G GOLDENGATE GOLDENGATEDiskgroup Name: GOLDENGATE         Volume Name: GOLDENGATE         Volume Device: /dev/asm/goldengate-257         State: ENABLED         Size (MB): 1920         Resize Unit (MB): 32         Redundancy: UNPROT         Stripe Columns: 4         Stripe Width (K): 128         Usage:          Mountpath: 
SQL> col volume_device for a30SQL> col volume_name for a30SQL> SELECT volume_name, volume_device FROM V$ASM_VOLUME   2       WHERE volume_name ='GOLDENGATE';VOLUME_NAME                    VOLUME_DEVICE------------------------------ ------------------------------GOLDENGATE                     /dev/asm/goldengate-257
3. Create an oracle ACFs File System
[root@rac1 ~]# /sbin/mkfs -t acfs /dev/asm/goldengate-257mkfs.acfs: version                   = 11.2.0.3.0mkfs.acfs: on-disk version           = 39.0mkfs.acfs: volume                    = /dev/asm/goldengate-257mkfs.acfs: volume size               = 2013265920mkfs.acfs: Format complete.
Create an ACFs file system mount point on node 1 and node 2.
[root@rac1 ~]# su - oracle[oracle@rac1 ~]$ mkdir -p /home/oracle/ggs
[root@rac2 ~]# su - oracle[oracle@rac2 ~]$ mkdir -p /home/oracle/ggs
Register the just-created ACFs File System in the cluster Mount registery or manually mount it without registration.
The advantage of registering an ACFs file system is that when the cluster checks Mount registery every 30 seconds, the file system is automatically mounted on each node, when the cluster software or system is restarted, the file system is automatically mounted.
[root@rac1 ~]# /sbin/acfsutil registry -a /dev/asm/goldengate-257 /home/oracle/ggsacfsutil registry: mount point /home/oracle/ggs successfully added to Oracle Registry
The command for manual mounting is as follows:
[root@rac1 ~]# /bin/mount -t acfs /dev/asm/goldengate-257 /home/oracle/ggs
Wait 30 seconds after running the registration command, and then check whether the ACFs file system is mounted on each node.
[root@rac1 ~]# df -hFilesystem            Size  Used Avail Use% Mounted on/dev/sda1              30G   20G  7.7G  73% //dev/sda3            1003M   39M  914M   5% /tmptmpfs                 1.3G  454M  814M  36% /dev/shm/dev/asm/goldengate-257                      1.9G   73M  1.9G   4% /home/oracle/ggs
[oracle@rac2 ~]$ df -hFilesystem            Size  Used Avail Use% Mounted on/dev/sda1              30G   21G  7.3G  74% //dev/sda3            1003M   39M  914M   5% /tmptmpfs                 1.3G  450M  818M  36% /dev/shm/dev/asm/goldengate-257                      1.9G  137M  1.8G   8% /home/oracle/ggs
4. Test the File System
[root@rac1 ~]# chown -R oracle:oinstall /home/oracle/ggs
First Node
[oracle@rac1 ~]$ echo "Oracle ACFS File System" > /home/oracle/ggs/acfs.log
[oracle@rac1 ggs]$ more /home/oracle/ggs/acfs.logOracle ACFS File System
Section 2
[oracle@rac2 ~]$ more /home/oracle/ggs/acfs.logOracle ACFS File System
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Author: xiangsir
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