Is filesystem USER.TOOLS part of the z/OS maintained filesystem?   Sounds like 
in BPXPRMxx you have VERSION set to Z1D on one system, and Z21 on another.   If 
this filesystem is NOT part of z/OS maintained filesystems, then you can 

1) Create a new directory entry in your SYSPLEX ROOT filesystem called 
something like /shared/tools
2) In your versioned filesystems, remve the directory /usr/local, and replace 
it with a symbolic link like ln -s /shared/tools /usr/local

Then both systems will resolve the directory to the same location.   With 
shared file systems in z/OS unix, a physical filesystem can only be mounted 
once, period.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Cal McCracken
Sent: Wednesday, January 08, 2014 10:02 AM
To: [email protected]
Subject: Sysplex File System Sharing with Mountpoints Containing Symlinks

I'm testing the sharing of a zFS file system between sysplex'd z/OS 2.1 and 
z/OS 1.13 systems. The file system is to be mounted at a mountpoint that 
contains a symlink containing $VERSION in its definition. That is, the 
mountpoint is '/usr/local' but '/usr' is a symlink defined as '$VERSION/usr'. 

On the z/OS 2.1 system, this mountpoint resolves to '/Z21/usr/local'. On the 
z/OS 1.13 system, it resolves to '/Z1D/usr/local'. 

When the z/OS 2.1 system is IPL'd first, the file system successfully mounts at 
'/Z21/usr/local'. When the z/OS
1.13 system is IPL'd second, the mount is refused with message:
BPXF237I FILE SYSTEM USER.TOOLS WAS ALREADY MOUNTED ON PATHNAME /Z21/usr/local.
 
How does one make the USERS.TOOLS file system available to the z/OS 1.13 at 
/usr/local (which resolves to /Z1D/usr/local)? 

Configuration:
BPXPRMxx - SYSPLEX(YES)
IOEPRMxx - sysplex=filesys and sysplex_filesys_sharemode=NORWSHARE

Mount command:
MOUNT    FILESYSTEM('USER.TOOLS')
         TYPE(ZFS)                                       
         MODE(read) UNMOUNT                              
         MOUNTPOINT('/usr/local')  

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