> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[email protected]] On Behalf Of Nofar Spalter
> Sent: Thursday, October 27, 2011 3:19 AM
> To: [email protected]
> Subject: HFS sharing and rolling product upgrades
> 
> Hello,
> How do you gradually roll changes to CICS, MQ and DB2 
> versions that change these products' HFS dataset one system at a time?
> We currently share our BPXPRMxx member between two LPARs 
> running in Sysplex with SYSPLEX(YES). 
> Our CICS guys want to upgrade the CICS version one LPAR at a 
> time (a reasonable request), and that means that they want to 
> change the CICS HFS pointed to by the 
> /usr/lpp/cicsts/cicsts32 mount point, but only on one system.
> In other words they want to do something like this:
> 
> BPXPRMxx:
> MOUNT FILESYSTEM('OMVS.&CICSVER.CICS32')  
>       MOUNTPOINT('/usr/lpp/cicsts/cicsts32')   
>       TYPE(HFS)  MODE(READ) AUTOMOVE(INCLUDE,*)
> 
> Where &CICSVER resolves to RSU1109 on SY1 LPAR and to RSU1110 
> on SY2 LPAR.
> 
> I don't think this is possible, but I do want to provide them 
> the option to roll the change one LPAR at a time, prefferably 
> without making changes to CICS.
> 
> Is there a way where we can support that?
> 
> Regards,
> Nofar Spalter

Have you looked at & considered: "Mounting file systems using symbolic links"?

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/bpxzb2b0/7.14

The commands to use would be something like:

cd /usr/lpp/cicsts
mkdir RSU1109
mkdir RSU1101
ln -s '$SYSSYMR/&CICSVER' cicsts32


Now, I don't use UNIX sysplex filesystem sharing, but I think you could do a 
mount similar to:

 MOUNT FILESYSTEM('OMVS.&CICSVER.CICS32')  
       MOUNTPOINT('/usr/lpp/cicsts/&CICSVER.')   
       TYPE(HFS)  MODE(READ) AUTOMOVE(INCLUDE,*)

Question: Is a period missing? Wouldn't you need 'OMVS.&CICSVER..CICS32'  ??? 
Or was it a typo on your part?

--
John McKown 
Systems Engineer IV
IT

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