I think David has the proper answer. There is nothing wrong with sharing the read-only ROOT file system. There should be a separate ROOT file system not for each LPAR (or combination thereof) but for each IPLable sysres. If you have two alternating sysres volumes, you should have two alternating ROOT file systems, one associated with each sysres.
(I'm assuming that OP does not really SMPE APPLY maintenance to *any* running system but rather copies from the install target resvol and file system to the 'alternate' environment ahead of an IPL switch. Please do not disabuse me of that sanguine interpretation.) So with three LPARs, any or all that are IPLed from SYRES1 should also be using ZFS-1. As each system is IPLed from the alternate SYRES2, it also switches to ZFS-2 because it's vital that the file system match the maintenance level of the active sysres. We make the sysres-ZFS association by name to keep track of what's where: SYRES1 --> hlq.SYRES1.appl.ZFS SYRES2 --> hlq.SYRES2.appl.ZFS At any time these sets can be at different RSU levels or at different z/OS releases. If you manage more than two IPLable sysres volumes in the same sysplex, then you need one additional ZFS associated with each additional sysres. . . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Jousma, David Sent: Wednesday, June 24, 2015 4:23 AM To: [email protected] Subject: Re: RSU apply on SYSPLEX You need to treat the ROOT filesystem (i.e. the stuff that comes from IBM) the same as SYSRES traditional datasets and have all the IBM supplied filesystems mounted read only. All of your customizations need to be in externally managed filesystems mounted at the proper places. When you IPL onto your new new SYSRES, you should also be getting the ROOT filesystem that matches that maintenance. If you are implying that you have customizations and are writing into each of the root filesystems, well, now you have your work cut out for you to remediate that, don’t you. _________________________________________________________________ Dave Jousma Assistant Vice President, Mainframe Engineering [email protected] 1830 East Paris, Grand Rapids, MI 49546 MD RSCB2H p 616.653.8429 f 616.653.2717 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Mainframe Mainframe Sent: Wednesday, June 24, 2015 7:20 AM To: [email protected] Subject: Re: RSU apply on SYSPLEX Yes. I forgot to mention but we also following same way. We have two set of RES volume Primary and Alt and we apply RSU on Alt RES volume and once systems are stable with this then we clone this volume to Primary RES volume and run system from that . But my issue is, as these three systems are running with same z/OS version and have common RES volume but two different root file systems are involved. While applying RSU, root file system is getting affected. So, do I need to apply RSU separately in SYS01 and SYS02 systems. Or is there any other way of doing this. On Wed, Jun 24, 2015 at 4:36 PM, Jousma, David <[email protected]> wrote: > The reality is that you should NEVER by applying routine maintenance to > running system. Unless in a problem situation, I always apply maintenance > to my base environment which is NEVER ipled from. Then via a cloning > process, I create the new alternate sysres, and IPL my systems onto them. > That way, if you encounter problems, you also have a backout by > IPLing onto the old again. > > _________________________________________________________________ > Dave Jousma > Assistant Vice President, Mainframe Engineering [email protected] > 1830 East Paris, Grand Rapids, MI 49546 MD RSCB2H p 616.653.8429 f > 616.653.2717 > > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Mainframe Mainframe > Sent: Wednesday, June 24, 2015 5:37 AM > To: [email protected] > Subject: RSU apply on SYSPLEX > > I am in the process of applying RSU1504 on sysplex systems but the > issue is , > > 1) Total Three systems are in sysplex and using same RES volume. > > 2) There are two root file systems. One is for SYS01 and other is > being used by SYS02/03. > 3) When I apply RSU from SYS01, system apply changes in SYS01 root > file system (ZFS.SYS01.ROOT) . > > 3) When I apply RSU from SYS02/03, system apply changes in SYS02/03 > root file system ( OMVS.SYS02.SYSPLEX.ROOT). As SYS02 and SYS03 > sharing same root file system and other file systems. > > So, I am little confused that how to go about. Please suggest. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
