We don't run ZFS support in its own address space any longer, it's in the OMVS 
address space now.

Mark Jacobs 


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------- Original Message -------
On Wednesday, May 10th, 2023 at 8:11 AM, Mark Jacobs 
<[email protected]> wrote:


> How do you start OMVS SUB=MSTR? I'm not seeing any start command in parmlib.
> 
> Mark Jacobs
> 
> Sent from ProtonMail, Swiss-based encrypted email.
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> 
> 
> 
> ------- Original Message -------
> On Wednesday, May 10th, 2023 at 7:58 AM, Allan Staller 
> [email protected] wrote:
> 
> 
> 
> > Classification: Confidential
> > 
> > OMVS can be started as SUB=MSTR or as a JES task. Che choice is up to the 
> > installation.
> > Ditto for ZFS.
> > 
> > What is really being implied is that if JES2 needs OMVS services, it should 
> > not provide those services until OMVS has initialized,
> > 
> > Many other tasks do this (e.g. TSO).
> > 
> > My USD $0.02
> > 
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [email protected] On Behalf Of 
> > Pommier, Rex
> > 
> > Sent: Tuesday, May 9, 2023 11:21 AM
> > To: [email protected]
> > Subject: Re: JES2 Submitlib Bootstrap problem
> > 
> > [CAUTION: This Email is from outside the Organization. Unless you trust the 
> > sender, Don't click links or open attachments as it may be a Phishing 
> > email, which can steal your Information and compromise your Computer.]
> > 
> > I see a problem with this scenario. It appears to me that there is a call 
> > (not necessarily by Shmuel) to potentially have JES2 wait for OMVS to be up 
> > before it does its startup (or at least completes the startup). Due to a 
> > self-inflicted screw-up on one of our LPARs, OMVS decided it had to do a 
> > filesystem check on every filesystem on the system. This took a good half 
> > hour where it simply appeared our LPAR was hung. JES2 had come up and I was 
> > able to start a few address spaces that are dependent on JES so I could 
> > figure out what was going on. Had JES been waiting for OMVS we would have 
> > been completely in the dark on this issue.
> > 
> > I could see there being communication between JES and OMVS so that when 
> > OMVS gets initialized it signals JES to redrive any failed zFS allocations, 
> > but don't force JES to wait until zFS is available.
> > 
> > My $.02.
> > 
> > Rex
> > 
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [email protected] On Behalf Of 
> > Seymour J Metz
> > 
> > Sent: Tuesday, May 9, 2023 10:10 AM
> > To: [email protected]
> > Subject: [EXTERNAL] Re: JES2 Submitlib Bootstrap problem
> > 
> > Yes, IBM absolutely should take startup sequence into account and should 
> > provide mechanisms to ensure that things occur in the proper order. This 
> > goes beyond OMVS.
> > 
> > --
> > Shmuel (Seymour J.) Metz
> > https://urldefense.com/v3/__http://mason.gmu.edu/*smetz3__;fg!!KjMRP1Ixj6eLE0Fj!oLVba7cIWA-HvwL4aaVssbMaEZeCG3m_dnLPJgpEL8DOiFs5DAJaoVf27kYVUZyYy_Nw7UxsOVp6sogwmA$
> > 
> > ________________________________________
> > From: IBM Mainframe Discussion List [[email protected]] on behalf of 
> > Paul Gilmartin [[email protected]]
> > Sent: Tuesday, May 9, 2023 11:01 AM
> > To: [email protected]
> > Subject: Re: JES2 Submitlib Bootstrap problem
> > 
> > On Tue, 9 May 2023 12:18:11 +0000, Mark Jacobs wrote:
> > 
> > > I defined several submitlibs in my JES2PARM to use directories in a ZFS 
> > > filesystem. When I hotstart JES2, JES2 can find everything and is happy. 
> > > During IPL/JES2 startup it's not. It doesn't seem like OMVS is 
> > > initialized yet and so the file systems aren't accessible for JES2 to 
> > > resolve. I haven't fully analyzed the system log to confirm it yet, but 
> > > it seems like a reasonable assumption. Has anyone else run into this?
> > 
> > WAD? z/OS UNIX appears to be a second-class citizen in that operations that 
> > require UNIX facilities are allowed to begin before UNIX is available, then 
> > simply fail.
> > 
> > Should design give more attention to the order of startup operations?
> > 
> > Should there be an implied WAIT (not explicit) for any operation which 
> > requires UNIX? Would that be likely to result in a deadlock?
> > 
> > --
> > gil
> > 
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