Mounting considerations for zFS

Keep in mind that the TYPE option is generic. When you specify either ZFS or HFS, the data set type is determined by the type of the data set.

If you specify TYPE(HFS), a search is done for a data set that matches the file system name.
- If the data set is found and it is not an HFS data set, the type is changed to ZFS.
- If a data set is not found, the type is changed to ZFS.
In both cases, the mount proceeds as though TYPE(ZFS) was specified.
If you specify TYPE(ZFS) and it is an HFS data set, then the type is changed to HFS. The mount proceeds as though TYPE(HFS) was specified.

If the file system type that was specified on the mount does not match the type of the file system and it is changed, the PARM parameter used by the mount is not preserved.

Restriction: zFS does not support the DDNAME() keyword on the BPXPRMxx ROOT and MOUNT parmlib statements. The FILESYSTEMNAME() keyword must be used instead.