Robert,

I do not understand your last sentence. Why would your z/VM systems
crash? Is it because they are on DASD that is under XRC?

Bob Richards 


-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
RPN01
Sent: Friday, June 29, 2007 10:53 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: GDPS/XRC for z/VM and Linux volumes

It should be noted that, as far as we've been able to find out (and
there
are still IBM'ers working on it, so this may not be true shortly), z/VM
cannot participate in GDPS if you are running CSE, or if you have any
DASD
shared between two z/VM LPARs. As I understand it currently, if our z/OS
systems go with GDPS, and if and when they test the fail-over (which
they
want to do at least twice a year), both of my z/VM systems will crash.

--
   .~.    Robert P. Nix             Mayo Foundation
   /V\    RO-OE-5-55                200 First Street SW
  /( )\   507-284-0844              Rochester, MN 55905
  ^^-^^   -----
        "In theory, theory and practice are the same, but
         in practice, theory and practice are different."




On 6/29/07 8:36 AM, "Richards.Bob" <[EMAIL PROTECTED]> wrote:

> Dave should know. My local IBMer is trying to find out from Noshir
> Dhondy. Between those two, there should be a good answer!  :-)
>
> Out of curiosity, Alan, why aren't z/VM writes "timestamped"?
>
> Bob Richards
>
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
> Ingo Adlung
> Sent: Friday, June 29, 2007 3:13 AM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: GDPS/XRC for z/VM and Linux volumes
>
> Bob,
> AFAIK GDPS/XRC is a supported configuration except that only the Linux
> I/O
> is timestamped and hence XRC eligible while I/O on VM's own behalf is
> not
> (unless it changed recently). I.e. if this is acceptable for your
setup
> you
> should be able adding Linux volumes to your XRC configuration. Not
sure
> about the GDPS side of the configuration, hence adding Dave Petersen
on
> copy. He should be able telling us whether he can manage Linux
operated
> minidisks or whether he requires dedicated disks when running Linux
> under
> z/VM in a GDPS/XRC setup.

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