How to resize an ACFS file system / ASM volume

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In this Document

Goal

Solution

Community Discussions

References

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Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 11.2.0.1.0 to 12.1.0.2 [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 08-Oct-2013***

Goal

The present document provides an example about how to resize an ACFS Filesystem/ASM Volume (ADVM) through command line.

Solution

1) Create the <DG_NAME> (8GB) diskgroup from ASM instance:

SQL> CREATE DISKGROUP <DG_NAME> EXTERNAL REDUNDANCY DISK 'ORCL:<DISK#>8' SIZE 4157 M DISK 'ORCL:<DISK#>9' SIZE 4157 M

ATTRIBUTE 'compatible.asm' = '11.2', 'compatible.advm' = '11.2';

Diskgroup created.

SQL> Select name, state, total_mb, free_mb from v$asm_diskgroup where name like '<DG_NAME>';

NAME                           STATE       TOTAL_MB   FREE_MB
------------------------------ ----------- ---------- ----------
<DG_NAME>                      MOUNTED     8314       8260

2) Create the next volume (5GB) in the <DG_NAME> diskgroup: 

SQL> ALTER DISKGROUP <DG_NAME> ADD VOLUME <VOL_NAME>1 SIZE 5G ;

Diskgroup altered.

3) Create the new ACFS filesystem on the /dev/asm/<VOL_NAME>1-292 volume:

[root@dbaasm ~]# mkdir /oracle_backup --(as root user)

[grid@dbaasm ~]$ /sbin/mkfs -t acfs -b 4k /dev/asm/<VOL_NAME>1-292 -n "<VOL_NAME>1_LABEL" --(as grid user)

4) Register the /dev/asm/<VOL_NAME>1-292 volume on the /oracle_backup directory

[grid@dbaasm ~]$ /sbin/acfsutil registry -f -a /dev/asm/<VOL_NAME>1-292 /oracle_backup --(as grid user)

5) Mount the /oracle_backup directory on the /dev/asm/<VOL_NAME>1-292 volume:

[root@dbaasm ~]# /bin/mount -t acfs /dev/asm/<VOL_NAME>1-292 /oracle_backup --(as root user)

6) The /oracle_backup ACFS filesystem was created with a size of 5GB:

[grid@dbaasm ~]$ df -hBM /oracle_backup
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/asm/<VOL_NAME>1-292
5120M 47M 5074M 1% /oracle_backup

7) Then resize the ACFS filesystem to 6 GB:

[grid@dbaasm ~]$ /sbin/acfsutil size 6G /oracle_backup
acfsutil size: new file system size: 6442450944 (6144MB)

8) Confirm that the ACFS filesystem was resized up to 6GB:

[grid@dbaasm ~]$ df -hBM /oracle_backup
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/asm/<VOL_NAME>1-292
6144M 49M 6096M 1% /oracle_backup

9) The ASM volume (/dev/asm/<VOL_NAME>1-292) is implicitly resized as well (to 6GB) as result of the ACFS filesystem resize.

SQL> select FS_NAME, VOL_DEVICE, TOTAL_MB , FREE_MB from V$ASM_ACFSVOLUMES;

FS_NAME              VOL_DEVICE                     TOTAL_MB   FREE_MB
-------------------- ------------------------------ ---------- ----------
/oracle_backup       /dev/asm/<VOL_NAME>1-292       6144       6095.57031

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How To Resize An ACFS Filesystem/ASM Volume (ADVM) (Doc ID 1173978.1)

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