Converting an existing aggregate to version 1.5

An existing version 1.4 aggregate can be changed to a version 1.5 aggregate and, optionally, existing directories contained in the aggregate can be converted to extended (v5) directories. Use any one of the following methods to change an aggregate to version 1.5.

Explicitly, for a mounted aggregate using the zfsadm convert -aggrversion command, or
Automatically, on mount when the change_aggrversion_on_mount configuration option is on (set in IOEPRMxx or using the zfsadm config command), or
Automatically, on mount when the converttov5 configuration option is on (set in IOEPRMxx or using the zfsadm config command), or
Automatically, on mount when the CONVERTTOV5 MOUNT PARM is specified, or
Offline, using the IOEFSUTL converttov5 batch utility with the -aggrversion_only option.

Note: The CONVERTTOV5 option and MOUNT PARM will also cause accessed directories to be converted to extended (v5) directories after the aggregate is converted to version 1.5.

An aggregate is not automatically changed if the NOCONVERTTOV5 MOUNT PARM is specified. An aggregate is not explicitly or automatically changed if there are earlier release systems (prior to z/OS® V2R1) in the shared file system environment.

Following is an example of the zfsadm convert command to change a version 1.4 aggregate to a version 1.5 aggregate without converting any directories to extended (v5) directories:

# zfsadm convert -aggrversion OMVS.PRV.ZFS.AGGR005.LDS0005
IOEZ00810I Successfully changed aggregate OMVS.PRV.ZFS.AGGR005.LDS0005 to version 1.5