Re: Migrate zLinux off zVM into standalone LPARs?

>>> On 11/17/2015 at 10:12 AM, Ray Mansell wrote: > Speaking of disk address changes... how does one cope with that? We have > a new DS8700 to replace our ancient DS8000s, and I'm wondering what is > the best way to migrate our LPAR Linux servers to the new box? I'm sure > this

Re: Migrate zLinux off zVM into standalone LPARs?

Speaking of disk address changes... how does one cope with that? We have a new DS8700 to replace our ancient DS8000s, and I'm wondering what is the best way to migrate our LPAR Linux servers to the new box? I'm sure this must have been done before, so I'd be very interested to learn how others

Re: Migrate zLinux off zVM into standalone LPARs?

On Tuesday, 11/17/2015 at 10:14 EST, Ray Mansell wrote: > Speaking of disk address changes... how does one cope with that? We have > a new DS8700 to replace our ancient DS8000s, and I'm wondering what is > the best way to migrate our LPAR Linux servers to the new box? I'm sure >

Re: Migrate zLinux off zVM into standalone LPARs?

If you can't do what Alan said, you can do ddr from z/vm or dd in linux which have access to both - old and new storage (the old linux should be down during the clone process) There are good chances that it will ipl fine from new storage. As Mark mentioned, it might depend how did you set it in

Re: Migrate zLinux off zVM into standalone LPARs?

It worked for us :) -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Ray Mansell Sent: Tuesday, November 17, 2015 1:35 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Migrate zLinux off zVM into standalone LPARs? Thanks, Marcy - Perhaps I

Re: Migrate zLinux off zVM into standalone LPARs?

Thank you Mark, and Alan, and Gregory... I think our problem is going to be more one of boredom rather than encountering insurmountable problems, as DDR plods its way through several hundred volumes. Originally I thought we were going to have to cope with changing device numbers on the new

Re: Migrate zLinux off zVM into standalone LPARs?

down your VM & Linux first though. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Ray Mansell Sent: Tuesday, November 17, 2015 12:38 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Migrate zLinux off zVM into standalone LPARs? Thank

Re: Migrate zLinux off zVM into standalone LPARs?

I see two kinds of ECKD DASD in what you're describing: disk with one partition used as a filesystem, and disk with one partition used as a "PV" to LVM. Assuming CDL ("compatible" disk layout) you probably have the device number prefixed with "0X" as the volser. If you simply DDR from virtual to

Re: Migrate zLinux off zVM into standalone LPARs?

Thanks, Marcy - Perhaps I can offload all this effort onto our z/OS admin. I rather like the sound of that... Ray On 11/17/2015 15:55, Marcy Cortes wrote: Changing devices numbers is generally not a problem unless you have lots of dedicated devices. SSI needs a bit of work as well if you have

Re: Migrate zLinux off zVM into standalone LPARs?

-DAY) kevin.mor...@reedelsevier.com To: LINUX-390@VM.MARIST.EDU Date: 01/07/2015 13:56 Subject:Migrate zLinux off zVM into standalone LPARs? Sent by:Linux on 390 Port LINUX-390@VM.MARIST.EDU We currently have 22 zLinux guests (all running RHEL 6.4) on 7 zVM (v6.2) LPARs

Re: Migrate zLinux off zVM into standalone LPARs?

-fiet-fbcs-ceng-citp/4/4b1/748 Linux on 390 Port LINUX-390@VM.MARIST.EDU wrote on 01/07/2015 03:18:45: From: Morris, Kevin J. (RET-DAY) kevin.mor...@reedelsevier.com To: LINUX-390@VM.MARIST.EDU Date: 01/07/2015 12:56 Subject: Migrate zLinux off zVM into standalone LPARs? Sent by: Linux on 390

Re: Migrate zLinux off zVM into standalone LPARs?

On Wed, 1 Jul 2015 02:18:45 + Morris, Kevin J. (RET-DAY) kevin.mor...@reedelsevier.com wrote: Given our static environment, can anyone provide any glaringly obvious caveats/downfalls to migrating from zVM to standalone zLinux LPARs that we might be missing? This is not that easy to

Re: Migrate zLinux off zVM into standalone LPARs?

On Wednesday, 07/01/2015 at 07:56 EDT, Morris, Kevin J. (RET-DAY) kevin.mor...@reedelsevier.com wrote: I know that we will lose the capability to overcommit/share memory between zLinux systems, but the application running in this environment is very response-time critical/sensitive so we

Re: Migrate zLinux off zVM into standalone LPARs?

Hello, Kevin. That's an interesting direction for your company to take. Can you elaborate a bit on what drove the decision to not exploit virtualization? As far as the move from z/VM to bare metal LPARs, I don't see any potential problems, as long as the LPARs are defined with enough physical

Re: Migrate zLinux off zVM into standalone LPARs?

] On Behalf Of Morris, Kevin J. (RET-DAY) Sent: 01 July 2015 03:19 To: LINUX-390@VM.MARIST.EDU Subject: Migrate zLinux off zVM into standalone LPARs? We currently have 22 zLinux guests (all running RHEL 6.4) on 7 zVM (v6.2) LPARs spread across 6 CECs (29 IFLs in total) all to support numerous

Migrate zLinux off zVM into standalone LPARs?

We currently have 22 zLinux guests (all running RHEL 6.4) on 7 zVM (v6.2) LPARs spread across 6 CECs (29 IFLs in total) all to support numerous environments for a single application. Here is our current zVM LPAR / zLinux guest configuration: 1. Sandbox zVM LPAR - 3 zLinux systems only for

Re: Migrate zLinux off zVM into standalone LPARs?

As usually LPARs have a lot of devices connected to them you might want to start using cio_ignore if you are not already using it. Not using cio_ignore can really slow down linux startup when the LPAR has a lot of devices connected to it. On Jul 1, 2015 5:32 PM, Alan Altmark

Re: Migrate zLinux off zVM into standalone LPARs?

[mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Morris, Kevin J. (RET-DAY) Sent: Tuesday, June 30, 2015 8:19 PM To: LINUX-390@VM.MARIST.EDU Subject: Migrate zLinux off zVM into standalone LPARs? We currently have 22 zLinux guests (all running RHEL 6.4) on 7 zVM (v6.2) LPARs spread across 6 CECs (29 IFLs

Re: Migrate zLinux off zVM into standalone LPARs?

Has anyone ever known a static environment that has remained static? We have had zVM for 10 years, and in the last 8 years we have only retired zLinux systems. Also, our largest zVM LPAR only has 6 zLinux guests with two zVM LPARs only having 1 zLinux guest -- almost no point in running zVM in