acfsutil size: ACFS-03006: smallest size, without loss of data

oradev01:NOTSET:/opt/oracle $ df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/mapper/VGExaDb-LVDbSys1

                                           30G   24G  4.2G  86% /

tmpfs                 253G  124M  253G   1%    /dev/shm

/dev/sda1             504M   42M  437M   9% /boot

/dev/mapper/VGExaDb-LVDbOra1

                                          198G  152G   37G  81% /u01

/dev/asm/goldengate-303

                                         500G   46G  455G  10% /goldengate

/dev/asm/gg_vol-303    20G   19G  1G 99% /u01/app/oracle/acfsmount/gg_vol

/dev/asm/acfs_expdir-303

                                            2.0T  1.2T  920G  56% /export

Set env to +ASM1 and login to sysasm and check with below sql

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

FS_NAME                           VOL_DEVICE                          TOTAL_MB    FREE_MB

--------------------------------- --------------------------------- ------------------ ----------

/goldengate                       /dev/asm/goldengate-303               512000   46072.625

/u01/app/oracle/acfsmount/gg_vol  /dev/asm/gg_vol-303                    20480    2.19140625

/export                           /dev/asm/acfs_expdir-303             2097152    938916.852

Now, Trying to resize ACFS (removing 500G from 2TB)

oradev01:NOTSET:/opt/oracle $ /sbin/acfsutil size -500G -d  /dev/asm/acfs_expdir-303   /export

acfsutil size: ACFS-03006: smallest size, without loss of data, is: 2193043226624 (2091449MB)

oradev01:NOTSET:/opt/oracle $ acfsutil version

acfsutil version: 12.1.0.2.0

SOLUTION:

As per Oracle DOC ID 1597710.1 it is not possible to resize ACFS so the work around is to delete the filesystem and create with the required storage

Ref more:

ACFSUTIL resize operation fails with "ACFS-03006: smallest size" (Doc ID 1597710.1)