Re: Midnight message
No, not practical: SET VTOD is for your virtual machine; CP's midnight message is a global thing, one user setting its VTOD to 23:59:xx won't make CP send it the midnight message. You can use SET VTOD for a guest VM system, but, SET VTOD causes a virtual machine reset, so each test means a restart of the guest VM. With DEFINE TIMEZONE and SET TIMEZONE in a guest VM, one can test often without the need to restart the guest VM each time. 2009/10/28 Richard Corak rich...@corak.com maybe SET VTOD would be more appropriate for testing? Richard Corak -- Kris Buelens, IBM Belgium, VM customer support
Re: Midnight message
I guess I should have responded to the list with a result and a thank you. Rob was completely correct - CPCONIO IUCV grabbed the midnight message. The other thing that I could do to stop the midnight message locking up the terminal was to do TERM HOLD OFF. I had a separate test system that I could play with so a combination of DEFINE TIMEZONE SET TIMEZONE commands allowed me to have as many tests as I needed (in this case - only 1). Thanks to Rob everyone else who responded. Colin Allinson Amadeus Data Processing GmbH
Can you run
Can z/VM 4.4 w/ VSE guests at 2.6 running under it run on a Z/10 ( 2097 ) Disregarding out of support issues etc. This would just be so we could get it here then upgrade to Z/vm to 5.4 , and VSE to 4.1 ( just a example ) Is anyone doing this ? some of the docs contradict each other thanks, Augie
web: Global CIO: As IBM Preps For Justice's Probe, Who Started This Nonsense? -- ...
Here's a slant on this... The bureaucrats at the Justice Dept., the European Commission, and a trade group called CCIA are looking to take from IBM what their supposed victim could not earn in the free market. http://www.informationweek.com/news/global-cio/interviews/showArticle.jhtml?articleID=220600671 -- Gabriel Goldberg, Computers and Publishing, Inc. (703) 204-0433 3401 Silver Maple Place, Falls Church, VA 22042g...@gabegold.com LinkedIn: http://www.linkedin.com/in/gabegold
Questions - zVM Limits/Hardware Support
Questions... What is the maximum page space supported by zVM? What is the supported real storage limit for the hardware and for VM itself? Does anyone have experience with a zVM system having over 500 non-CMS guest systems? What is the highest total sustained I/O rate you have witnessed on a VM system? I see from an BM presentation that support is available for simulated guest coupling. Does zVM support a real coupler facility for intersystem (VM SYSTEMS) communications? Thanks --. .- .-. -.-- Gary Dennis Mantissa Corporation
Re: Questions - zVM Limits/Hardware Support
Funny, there was a session on just this stuff at the z Expo a few weeks ago, and I had the handout handy. Max paging volumes: 255 (number of CP volume slots) Max real storage supported: 256GB, however higher has been tested. I've heard reports of VM being driven with something like 47,000 Linux guests, but I don't believe they were doing much. We have over 100 on our busiest system, and it's not heavily loaded. Highest sustained I/O rate would depend on architecture. FICON can handle much higher rates than older architectures, and under the right conditions, I've managed to saturate a 2GB. FCP channel. Best I got out of a single FICON channel with no contention was 60MB/sec. This will vary a lot with different hardware configurations. Sorry, no idea about the coupler stuff. -Original Message- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Gary M. Dennis Sent: Wednesday, October 28, 2009 3:31 PM To: IBMVM@LISTSERV.UARK.EDU Subject: [IBMVM] Questions - zVM Limits/Hardware Support Questions... What is the maximum page space supported by zVM? What is the supported real storage limit for the hardware and for VM itself? Does anyone have experience with a zVM system having over 500 non-CMS guest systems? What is the highest total sustained I/O rate you have witnessed on a VM system? I see from an BM presentation that support is available for simulated guest coupling. Does zVM support a real coupler facility for intersystem (VM SYSTEMS) communications? Thanks --. .- .-. -.-- Gary Dennis Mantissa Corporation -- This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. The information contained in this e-mail was obtained from sources believed to be reliable; however, the accuracy or completeness of this information is not guaranteed. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaran teed to be secure or error-free. References to Merrill Lynch are references to any company in the Merrill Lynch Co., Inc. group of companies, which are wholly-owned by Bank of America Corporation. Securities and Insurance Products: * Are Not FDIC Insured * Are Not Bank Guaranteed * May Lose Value * Are Not a Bank Deposit * Are Not a Condition to Any Banking Service or Activity * Are Not Insured by Any Federal Government Agency. Past performance is no guarantee of future results. Attachments that are part of this E-communication may have additional important disclosures and disclaimers, which you should read. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/. By messaging with Merrill Lynch you consent to the foregoing. --
Spool Dump space
Hi all... I'm hoping for some good suggestions... We have: - very big LPARs (80GB to 190GB and more) - very limited 3390 space In the 190GB LPAR, the basic dump space takes the better part of 3 mod 9s (about 1.1GB). To have dump space for a full dump (190GB), that would take at least 29 mod 9s, which we don't have -- especially when you consider there are a number of large VM LPARs that would each need the space... What we do have the ability to get space on is FCP LUNs, and we've the connectivity already... So... But (at least in this environment) there is the possibility of not having connectivity to the LUN after a VM IPL. If I set up a BIG EDEV for the dump, I'd like to keep spool files off the EDEV, so I don't loose things like console logs in case there's a LUN connectivity issue. In the olden days there was an allocation type of DUMP, but I don't see that any more... Am I missing the DUMP option, or?? And that doesn't even begin to talk about trying to load a dump that big... Thanks for any thoughts.. Lee -- Lee Stewart, Senior SE Sirius Computer Solutions Phone: (303) 996-7122 Email: lee.stew...@siriuscom.com Web: www.siriuscom.com
Spool Dump space
If I set up a BIG EDEV for the dump, I'd like to keep spool files off the EDEV, so I don't loose things like console logs in case there's a LUN connectivity issue. In the olden days there was an allocation type of DUMP, but I don't see that any more... Am I missing the DUMP option, or?? Lee, There is not an allocation type for DUMP, but there is a DUMP operand on the CP_OWNED statement in the system configuration file. This tells CP to reserve all of the SPOL space on that volume for dumps. John Franciscovich z/VM Development
Re: Spool Dump space
The DUMP designation still exists. I just looked at the 6.1 CP Planning and Admin manual. Regards, Richard Schuh -Original Message- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Lee Stewart Sent: Wednesday, October 28, 2009 11:14 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Spool Dump space Hi all... I'm hoping for some good suggestions... We have: - very big LPARs (80GB to 190GB and more) - very limited 3390 space In the 190GB LPAR, the basic dump space takes the better part of 3 mod 9s (about 1.1GB). To have dump space for a full dump (190GB), that would take at least 29 mod 9s, which we don't have -- especially when you consider there are a number of large VM LPARs that would each need the space... What we do have the ability to get space on is FCP LUNs, and we've the connectivity already... So... But (at least in this environment) there is the possibility of not having connectivity to the LUN after a VM IPL. If I set up a BIG EDEV for the dump, I'd like to keep spool files off the EDEV, so I don't loose things like console logs in case there's a LUN connectivity issue. In the olden days there was an allocation type of DUMP, but I don't see that any more... Am I missing the DUMP option, or?? And that doesn't even begin to talk about trying to load a dump that big... Thanks for any thoughts.. Lee -- Lee Stewart, Senior SE Sirius Computer Solutions Phone: (303) 996-7122 Email: lee.stew...@siriuscom.com Web: www.siriuscom.com
Re: Questions - zVM Limits/Hardware Support
On Wednesday, 10/28/2009 at 04:28 EDT, Gary M. Dennis gary.den...@mantissa.com wrote: What is the maximum page space supported by zVM? What is the supported real storage limit for the hardware and for VM itself? Max page space: - For ECKD: 11.2 TB - For FCP: 15.9 TB (emulated FBA on SCSI) Note that optimal performance requires that you keep utilization of each device to 50%. Memory limits: - z/VM supports an LPAR up to 256 GB in size - The amount of memory on the box and in an LPAR depends on the hw - Biggest z10 has up to 1.5 TB memory and a the largest LPAR can be 1.0 TB You can find these and other z/VM limits in Bill Bitner's z/VM Limits presentation at http://www.vm.ibm.com/devpages/bitner/presentations/vmlimits.pdf What is the highest total sustained I/O rate you have witnessed on a VM system? I have heard rumors of a z/VM paging rate of 200K pages/second on a robust I/O subsystem, but I don't know if that's what you're referring to. Guest I/O data rates are a function of access to the CPU and the size of the I/O operation, so it depends. I see from an BM presentation that support is available for simulated guest coupling. Does zVM support a real coupler facility for intersystem (VM SYSTEMS) communications? z/VM does not use and does not allow guest access to the real Coupling Facility. z/VM's native intersystem comms mechanism is ISFC, based on CTCs. Alan Altmark z/VM Development IBM Endicott
Re: Fed-Up With IBM Support!
There is no http://www.ibm.com/ibmbmlink. If you mean http://www.ibm.com/ ibmlink, that is the URL that IBMLink recommends you use. What were you using for IBMLink 2000 ? Alan Ackerman Alan (dot) Ackerman (at) Bank of America (dot) com
Re: Spool Dump space
Thanks John and Richard... I see that now (gotta look in the right place!)... Now we're off to create several of those 64GB LUNs as DUMP type EDEVs... Then a big honkin EFBA CMS disk to read the dump in... And not have to worry about losing a console log etc. in case the EDEV hickups... (The EDEV in our particular environment is a less than fully supported environment.) Thanks again, Lee John Franciscovich wrote: If I set up a BIG EDEV for the dump, I'd like to keep spool files off the EDEV, so I don't loose things like console logs in case there's a LUN connectivity issue. In the olden days there was an allocation type of DUMP, but I don't see that any more... Am I missing the DUMP option, or?? Lee, There is not an allocation type for DUMP, but there is a DUMP operand on the CP_OWNED statement in the system configuration file. This tells CP to reserve all of the SPOL space on that volume for dumps. John Franciscovich z/VM Development -- Lee Stewart, Senior SE Sirius Computer Solutions Phone: (303) 996-7122 Email: lee.stew...@siriuscom.com Web: www.siriuscom.com
