How to resize ACFS file system online ?

We can resize the ACFS file system online without having to umount or disable volume. For this, we use the acfsutil tool.

For operations, the relevant volume must be enabled and the file system must be mounted.

We perform the operations with the root user.

For size increase:

bash-4.3# /usr/sbin/acfsutil size +500G /u01/backup
acfsutil size: new file system size: 2735894167552 (2609152MB)

To reduce size:

bash-4.3# /usr/sbin/acfsutil size -50G /u01/backup
acfsutil size: new file system size: 2682207076352 (2557952MB)