On Wed, 28 Jan 2009 11:15:43 -0500, Guy Gardoit <ggard...@gmail.com> wrote:
>Actually, they don't. They are only mounted (to a /service' directory in
>the sandbox system) when service is applied; unmounted when service
>application is complete. The way I do staging is to NEVER used the staging
>resvol(s) nor $VERSION FS(s) files for an IPL'ed system. They are only
>used for cloning and nothing else. There are no issues with quiescing any
>staging FS since it is not mounted anywhere during the cloning process (one
>simple job), there is a base resvol(s) that is NEVER IPled.
>
>To make things clearer, bear with me while I give an example. A sysplex has
>two possible volumes to IPL from, say SYSRS1 or SYSRS2, which implies two
>possible "&VERSION" ROOT filesystem(s), say OMVS.**.SYSRS1 or
>OMVS.**.SYSRS2. These volumes and $VERSION ROOT file systems (the ones NOT
>IPLed from - which implies cloning cannot be done unless all systems in the
>plex have been migrated to ONE sysres/$VERSION; IMO a reasonable and
>desirable situation) are recreated from the staging resvol, say STGRES, and
>staging $VERSION ROOT FS, say OMVE.**.STGRES.
>
>The clone process uses the staging items as the source and the unused
>sysres/$VERSION ROOT FS(s) as the destination.
>
>Guy Gardoit
>z/OS Systems Programming
>
I'm not sure I understand what you are saying.
First, you say you won't roll out a new sysres set until all systems are
migrated to the same (most current) set. Correct? That's true most
of the time for us, but not always (oh, for a perfect world - that is why
we need at least 3 target sets). Regardless, it has nothing to do
with the problem at hand. It can happen with just 2 sets.
Second, you say the clone process uses the unused sysres version root
as the target. That is exactly what we do. The problem is, if you
do rolling IPLs, regardless of all systems being IPLed on the same version
root / files, even the unused version files ("destination" to use your
terminology) will remain mounted unless you take overt action to
unmount them.
Do you always do sysplex wide IPLs? What am I missing?
Mark
--
Mark Zelden
Sr. Software and Systems Architect - z/OS Team Lead
Zurich North America / Farmers Insurance Group - ZFUS G-ITO
mailto:mark.zel...@zurichna.com
z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/
Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html
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