Gotcha's involved in relabeling CP-Owned volumes?
I need to relabel some volumes, including page and spool volumes... Are things such as the checkpoint and warmstart data strictly done based on the position in the CP-Owned list? Or will the actual volume labels matter, if the SYSTEM CONFIG has been adjusted prior to the shutdown and re-IPL? I want to rename a test system to keep it around, while making way for a new installation. (IBM: It¹d be really nice if you¹d all the sysres volume to be renamed during an install... Hint, hint) -- Robert P. Nix Mayo Foundation.~. RO-OE-5-55 200 First Street SW/V\ 507-284-0844 Rochester, MN 55905 /( )\ -^^-^^ In theory, theory and practice are the same, but in practice, theory and practice are different.
Re: VM Virtual CPUs and Threaded CMS Applications
I appreciate your insight. When you state: ³ If you¹re not invoking CMS services from non-base threads² What precisely do you mean by CMS services? Are you referring specifically to the services defined in ³CP Programming Services² OR any call to CMS? This has the potential to derail what we are trying to achieve with CMS so I want to be absolutely sure I understand what you mean. --. .- .-. -.-- Gary Dennis On 10/19/08 2:35 PM, Gillis, Mark [EMAIL PROTECTED] wrote: I haven¹t experienced this specific problem because IBM strongly advised us to not allocate more than 1 virtual CPU to a mutitasking CMS application. The reason they gave was that any CMS services called from a thread running on a non-base CPU would need to be scheduled to run on the base CPU, so that the overheads of this would outweigh the benefits of the extra processors. If you¹re not invoking CMS services from non-base threads then I guess that this won¹t be an issue for you. Mark Gillis Principal Software Engineer Tel: +61 2 8898 2678 Fax: +61 2 8898 2600 [EMAIL PROTECTED] From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Gary M. Dennis Sent: Sunday, 19 October 2008 10:24 AM To: IBMVM@LISTSERV.UARK.EDU Subject: VM Virtual CPUs and Threaded CMS Applications If you do not have experience with threaded CMS application development, I suggest you read anything but the balance of of this email. I have an application that runs under CMS and consists of three distinct layers. 1. The top layer is some virtualized x86 OS. 2. The middle layer performs x86 to z translation 3. The base layer is everything else. That includes code fragment storage, aging, retrieval, statistics collection/ push using IUCV, etc. Layer two has been developed in such a way that, without layer three, it simply translates a code fragments to z architecture code, executes that code, then discards the translated fragment. It detects the interface stub for layer three and, if that is present, it takes advantage of the capabilities including prior translation reuse. Layer 3 is multithreaded and is the cause/source of the problem. Whether layer 3 is run with layers 1 and 2 or in standalone test mode the results are the same. First the environment: VM 4.3 Number of processors: 2 Virtual CPUs (from 2 to 6 .. See note below) Now the application from 10,000 feet: Layer three consists of a parent thread that creates 4 additional threads. Each thread is created in a dispatch class that is unique. Routines are not shared between threads. Upon entry into each routine, the preamble is destroyed and restored on exit to trap any potential inadvertent share. Critical fields shared between threads are protected by a compare and swap spin lock. Part of the testing consists of pushing 1WAY IUCV messages from each connected client every 20 milliseconds. The VM directory for each of 4 machines (one server and three clients) defines the machine as an XC mode machine with: CPU 00 BASE CPU 01 As each thread is created it requests either BASE or ANY CPU affinity. BASE affinity is reserved for the parent and IUCV message handler threads . ANY is used for all other threads . Each affinity request receives a normal return code. All this works beautifully for days and millions of messages UNTIL the number of virtual CPUs defined exceed the number of real CPUs assigned to the VM image. When this takes place, everything comes unstuck. By everything I mean everything in CMS. Stack overflow (03FF abend), free storage management failure, all of it. The multitasking application dev guide states that to the extent possible, dispatch classes are assigned to vCPUs and further states that the max number of vCPUs that may be utilized is equal to the number of dispatch classes. Whether the vCPUs are defined in the user directory entry OR they are created dynamically using the CPU Create CMS function, the results are the same. My questions) 1. Has anyone had a similar experience? 2. Is this a known issue with 4.3? Or in more current releases? 3. Although this seems to be telling me no to go there, I¹ve tried but cannot find anything that says ³You¹ll shoot your eye out , kid.² if you define more virtual CPUs than real processors. Anyone know of such a restriction? 4. Is it possible that CMS kernel services don¹t tolerate a situation where the number of virtual CPUs exceeds ³real² processors? Thanks in advance for any insight you might have on this behavior. --. .- .-. -.-- Gary Dennis Mantissa Corporation
Re: The correct way to shutdown z/Linux Guest Softly
Hi, Terry. Yes, you should definitely be shutting down the Oracle database instances in a clean manner before shutting down Linux itself. Oracle does not like having the rug pulled out from under it Have a good one. Martin, Terry R. (CMS/CTR) (CTR) wrote: Hi, Lately we have had some problems with Oracle corruption that we are being told it is because the way we are shutting down our z/Linux guest. What is the cleanest and safest way to shutdown a z/Linux guest? Should we be issuing a separate Oracle shutdown of some sort before shutting down the whole guest? We are running REDHAT REL4 under z/VM 5.3 Thanks in advance! Terry -- DJ V/Soft z/VM and mainframe Linux expertise, training, consulting, and software development www.vsoft-software.com
Re: VM Virtual CPUs and Threaded CMS Applications
All execution of CMS linkage interfaces (CMSCALL, SVC 204, SVC202, etc.) and most common direct branch interfaces to CMS services executed on a non-base CPU result in running intercept code that switches that thread back to the base CPU for execution of the service. Another way to say it is that all the code in the CMS Nucleus only runs on the base processor. Each CP service defines how it executes on a non-base processor. Things like IUCV and most Diagnose codes work just fine. In CMS Multitasking, non-base processors are intended for pure code not requiring CMS services. Bob Bolch From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Gary M. Dennis Sent: Monday, October 20, 2008 8:31 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: VM Virtual CPUs and Threaded CMS Applications I appreciate your insight. When you state: If you're not invoking CMS services from non-base threads What precisely do you mean by CMS services? Are you referring specifically to the services defined in CP Programming Services OR any call to CMS?
Re: Gotcha's involved in relabeling CP-Owned volumes?
Warm Ckpt are independent of CP Owned, fully defined in SYSTEM CONFIG. Spool page are indeed dependent on order in CP Owned list. Do not forget to change the labels in the CP directory too. This should be the last step before shutdown-reipl, otherwise no *new* LINK commands will work due to disk newlabel not mounted. 2008/10/20 RPN01 [EMAIL PROTECTED]: I need to relabel some volumes, including page and spool volumes... Are things such as the checkpoint and warmstart data strictly done based on the position in the CP-Owned list? Or will the actual volume labels matter, if the SYSTEM CONFIG has been adjusted prior to the shutdown and re-IPL? I want to rename a test system to keep it around, while making way for a new installation. (IBM: It'd be really nice if you'd all the sysres volume to be renamed during an install... Hint, hint) -- Robert P. Nix Mayo Foundation.~. RO-OE-5-55 200 First Street SW/V\ 507-284-0844 Rochester, MN 55905 /( )\ -^^-^^ In theory, theory and practice are the same, but in practice, theory and practice are different. -- Kris Buelens, IBM Belgium, VM customer support
Re: Question about a user volume
Not exactly. Changing the contents of the CP_OWNED statement, including deletion, affects only that statement. But that's not as simple as it might appear. Spool files can span CP_OWNED volumes, so if CP needs to fetch the next record for the spool file by going to the volume at slot 'n', and there isn't a slot 'n', or it's a different volume so the needed record isn't there, you lose the spool file. Deleting the statement for slot 'n' doesn't automatically affect any other CP_OWNED volume, but can affect all your spool files, and could mean that you have no object directory. Richard Corak A word of caution, however. Don't just delete that line in the CP-Owned list in SYSTEM CONFIG, especially if there is a volume later in the list that contains SPOOL space. You would lose all the spool files in the later volume. Just change the volid in that slot in the CP-Owned list to Reserved, rather than removing the slot.
Re: The correct way to shutdown z/Linux Guest Softly
Here is part of my shutdown/startup instructions for Operations: 1. When the Oracle server is to be taken down, using PUTTY, logon in as oracle 2. emctl stop dbconsole 3. sqlplus ‘/ as sysdba’ 4. sql shutdown 5. exit 6. lsnrctl stop 6. After the Oracle Server is brought up, using PUTTY, logon in as oracle 7. lsnrctl start 8. sqlplus ‘/ as sysdba’ 9. sql startup 10. sql select name from v$database; 11. exit 12. emctl start dbconsole I have had the above command in an autostart/shutdown process, which is fairly easy to do. The problem was, if Oracle didn't start due to some problem, which so far has been the recovery area being full, the bad startup wasn't caught. Having Operations do the above command, sometimes (only sometimes), results in a phone call if the messages don't look right. Not a 100% solution either. Tom Duerbusch THD Consultinig Law of Dinner Table Attendance Cats must attend all meals when anything good is served. Martin, Terry R. (CMS/CTR) (CTR) [EMAIL PROTECTED] 10/19/2008 7:08 PM Hi, Lately we have had some problems with Oracle corruption that we are being told it is because the way we are shutting down our z/Linux guest. What is the cleanest and safest way to shutdown a z/Linux guest? Should we be issuing a separate Oracle shutdown of some sort before shutting down the whole guest? We are running REDHAT REL4 under z/VM 5.3 Thanks in advance! Terry
ZVM Linux losing WINS
We have Novell 10.2 zLinux on 5.2 ZVM running a SAMBA domain controller handling authorization. This centralized authorization hands out SAMBA shares on multiple zLinux servers as well as several AIX servers. Communication from the zLinux box is through a vswitch setup on the ZVM. This has worked well for several years now. In the past couple of weeks our Windows network infrastructure has begun to lose our SAMBA servers and we are having to hard code names into the WINS database on the Windows WINS server (I am not on that side of the house, so I do not really know how that piece is accomplished). Although the opinion is that the problem resides in the Windows Networking, I want to cover all bases, and wondered if anyone has experienced anything like this. The windows boxes are patched on a weekly basis. David Dean Information Systems *bcbstauthorized* Please see the following link for the BlueCross BlueShield of Tennessee E-mail disclaimer: http://www.bcbst.com/email_disclaimer.shtm
Re: Question about a user volume
OK, but if in deleting the Slot 5 statement and then tidying up by renumbering the subsequent slot statements so that there are no gaps in the slot numbers and if one of the later slots, Slot 6 for example, was a spool volume, then it would be in a different relative number, wouldn't it? After tidying up, the old Slot 6 would be the new Slot 5. That used to be bad before the cpowned volumes were numbered in SYSTEM CONFIG. Of course, sometimes my memory gets mixed up with really old things vs. just old things. Jim Richard Corak wrote: Not exactly. Changing the contents of the CP_OWNED statement, including deletion, affects only that statement. But that's not as simple as it might appear. Spool files can span CP_OWNED volumes, so if CP needs to fetch the next record for the spool file by going to the volume at slot 'n', and there isn't a slot 'n', or it's a different volume so the needed record isn't there, you lose the spool file. Deleting the statement for slot 'n' doesn't automatically affect any other CP_OWNED volume, but can affect all your spool files, and could mean that you have no object directory. Richard Corak A word of caution, however. Don't just delete that line in the CP-Owned list in SYSTEM CONFIG, especially if there is a volume later in the list that contains SPOOL space. You would lose all the spool files in the later volume. Just change the volid in that slot in the CP-Owned list to Reserved, rather than removing the slot. -- Jim Bohnsack Cornell University (972) 596-6377 home/office (972) 342-5823 cell [EMAIL PROTECTED]
Re: ZVM Linux losing WINS
In the same area, but not your problem... I had a weird problem, that I was thinking that someone was automagically updating the DNS servers with my Samba machines. Sometimes it happened, sometimes it didn't. The Network guys got on this, and found that if I specified in the Samba Configuration, under the Identity tag, that it was a Remote WINS Server, XP had no problem in finding the Samba server (using the Search for Computers) task. I had no idea prior to this what WINS was, just sounded good, since I wanted Windows users to have access to the SAMBA server. I haven't specified a name for the Remote WINS Server. I don't know, but I can connect to Samba using the guest machine name of the Linux image. In this case, LINUX61. Tom Duerbusch THD Consulting Dean, David (I/S) [EMAIL PROTECTED] 10/20/2008 9:57 AM We have Novell 10.2 zLinux on 5.2 ZVM running a SAMBA domain controller handling authorization. This centralized authorization hands out SAMBA shares on multiple zLinux servers as well as several AIX servers. Communication from the zLinux box is through a vswitch setup on the ZVM. This has worked well for several years now. In the past couple of weeks our Windows network infrastructure has begun to lose our SAMBA servers and we are having to hard code names into the WINS database on the Windows WINS server (I am not on that side of the house, so I do not really know how that piece is accomplished). Although the opinion is that the problem resides in the Windows Networking, I want to cover all bases, and wondered if anyone has experienced anything like this. The windows boxes are patched on a weekly basis. David Dean Information Systems *bcbstauthorized* Please see the following link for the BlueCross BlueShield of Tennessee E-mail disclaimer: http://www.bcbst.com/email_disclaimer.shtm
Re: Question about a user volume
I think there may be different interpretations of what deleting an entry in the CP_OWNED list means. I *think* Richard Corak means replacing a VOLSER entry with the Reserved keyword, _not_ compressing the list after deleting an entry. The pointers to SPOOL files from the Warm Start area and pointers from one page of a spool file to the next page are of the form CCPV, where the V (for Volume) is an index into the CP_OWNED list. If the index value gets changed by changing the position of a SPOOL volume in the list, all of the existing pointers are invalidated and the affected SPOOL files are lost permanently. Marty Martin Zimelis Principal maz/Consultancy -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Jim Bohnsack Sent: Monday, October 20, 2008 11:07 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Question about a user volume OK, but if in deleting the Slot 5 statement and then tidying up by renumbering the subsequent slot statements so that there are no gaps in the slot numbers and if one of the later slots, Slot 6 for example, was a spool volume, then it would be in a different relative number, wouldn't it? After tidying up, the old Slot 6 would be the new Slot 5. That used to be bad before the cpowned volumes were numbered in SYSTEM CONFIG. Of course, sometimes my memory gets mixed up with really old things vs. just old things. Jim Richard Corak wrote: Not exactly. Changing the contents of the CP_OWNED statement, including deletion, affects only that statement. But that's not as simple as it might appear. Spool files can span CP_OWNED volumes, so if CP needs to fetch the next record for the spool file by going to the volume at slot 'n', and there isn't a slot 'n', or it's a different volume so the needed record isn't there, you lose the spool file. Deleting the statement for slot 'n' doesn't automatically affect any other CP_OWNED volume, but can affect all your spool files, and could mean that you have no object directory. Richard Corak A word of caution, however. Don't just delete that line in the CP-Owned list in SYSTEM CONFIG, especially if there is a volume later in the list that contains SPOOL space. You would lose all the spool files in the later volume. Just change the volid in that slot in the CP-Owned list to Reserved, rather than removing the slot. -- Jim Bohnsack Cornell University (972) 596-6377 home/office (972) 342-5823 cell [EMAIL PROTECTED]
Re: ZVM Linux losing WINS
One case similar to this that I saw involved a MS patch inadvertently changing Windows name resolution away from NetBEUI in a client configuration as part of a network driver update. Did anything like that just get pushed out? Also, are you configuring regular DNS? Modern (post Win2K) Windows doesn't need WINS any longer, and they should be switching their clients away from it. From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Dean, David (I/S) Sent: Monday, October 20, 2008 10:57 AM To: IBMVM@LISTSERV.UARK.EDU Subject: ZVM Linux losing WINS We have Novell 10.2 zLinux on 5.2 ZVM running a SAMBA domain controller handling authorization. This centralized authorization hands out SAMBA shares on multiple zLinux servers as well as several AIX servers. Communication from the zLinux box is through a vswitch setup on the ZVM. This has worked well for several years now. In the past couple of weeks our Windows network infrastructure has begun to lose our SAMBA servers and we are having to hard code names into the WINS database on the Windows WINS server (I am not on that side of the house, so I do not really know how that piece is accomplished). Although the opinion is that the problem resides in the Windows Networking, I want to cover all bases, and wondered if anyone has experienced anything like this. The windows boxes are patched on a weekly basis. David Dean Information Systems *bcbstauthorized* Please see the following link for the BlueCross BlueShield of Tennessee E-mail disclaimer: http://www.bcbst.com/email_disclaimer.shtm
Re: detect VMREAD or CPREAD
You can use the READCHEK function in Performance Toolkit to get the following status conditions of a virtual machine. Note that your PERFSVM must be in monitor mode, collecting data. See HELP FCX CBASVMCF. So you could, for example, create a small EXEC to watch a list of critical service machines that wakes up every 15 minutes and does READCHEKs for them and sends a warning message, or whatever, for any that do not get a RC = 57 from READCHEK. RC 5: Missing argument: User-ID not specified RC 22: Not authorized for 'LOCATE userid' cmd. RC 45: User is not logged on RC 0: User is not disconnected RC 1: User is in VM or CP read state RC 4: User is in disabled wait state RC 6: User set to log off (read state or disabled wait state) RC 2: User is in CP read state RC 3: CP function active RC 145: User has been forced RC 57: User is disconnected and running Note also that AUDITOR can watch service virtual machines and is capable of detecting a userid in a disabled wait. However Perfkit gives you more options. Hal Schmitigal Perot Systems Corporation
Re: RXSSL / Charlotte Problem
Thomas Kern wrote: I just tried Charlotte/RXSSL from my IFL system to the web server on the VM system on the other side of the system. I do not get an abend but I do get this message: SSL Alert: HANDSHAKE_FAILURE My copy of RXSSL is: RXSSLMODULE T1 V 39080 4 11 4/21/00 16:15:46 Our web server is Velocity Software's ESAWEB but the SSL is supplied by SSLSERV that is not running in FIPS mode. This FIPS mode has caused some problems for older levels of Attachmate and now requires that web browsers have TLS 1.0 support turned on. I suspect that my problem with RXSSL is that it does not understand TLS 1.0. /Tom Kern /301-903-2211 Somewhere in the Rexx code for SSL support there is a comment that says: To enable TLS support uncomment the following line That may not be the actual wording, but that is the jest of what it says. Have you tried uncommenting that line? James Johnson
Re: z/VM SSL Usage
1) Strictly Telnet. 2) 6 3) no idea. On Tue, Oct 14, 2008 at 10:50 AM, Bill Bitner [EMAIL PROTECTED] wrote: The z/VM Development Lab is looking for some information regarding z/VM SSL server usage (this is the SSL for use with the VM TCP/IP stack). If you currently use the z/VM SSL server or plan to use it in the next few years, we'd like to hear from you to help guide some design decisions. Answers here, to myself, or to [EMAIL PROTECTED] for the following questions would be greatly appreciated: 1. What applications are you using with the z/VM SSL server? 2. What is the maximum number of concurrent sessions you currently use? 3. What is the maximum number you expect to be using in 2 years? Regards, Bill Bitner -- Mark Pace Mainline Information Systems 1700 Summit Lake Drive Tallahassee, FL. 32317
Re: Question about a user volume
I have those m-disks on the IPL volume, so there is never a problem. If it isn't available, then neither is the nucleus. ;-) Regards, Richard Schuh -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Rich Greenberg Sent: Friday, October 17, 2008 6:36 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Question about a user volume On: Fri, Oct 17, 2008 at 04:44:31PM -0700,Schuh, Richard Wrote: } You do not need it to be CP_Owned for that. If it is listed in the } User_Volume_List, CP will complain if it is not available at IPL. That } is the purpose of the list. After reflection, I have concluded that Rich is almost correct. The exception which I would still put the volume in the CP-Owned list would be if it contained critical minidisks such as the CMS S, Y or H disks. Otherwise the User_Volume_List is fine. -- Rich Greenberg N Ft Myers, FL, USA richgr atsign panix.com + 1 239 543 1353 Eastern time. N6LRT I speak for myself my dogs only. VM'er since CP-67 Canines:Val, Red, Shasta Casey (RIP), Red Zero, Siberians Owner:Chinook-L Retired at the beach Asst Owner:Sibernet-L
Re: VM Virtual CPUs and Threaded CMS Applications
Be careful of IUCV. There is an entire chapter of CP Programming Services devoted to IUCV in an MP configuration. Regards, Richard Schuh Each CP service defines how it executes on a non-base processor. Things like IUCV and most Diagnose codes work just fine. In CMS Multitasking, non-base processors are intended for pure code not requiring CMS services. Bob Bolch
Re: RXSSL / Charlotte Problem
I found that line in SSSREXX REXX and fixed it. I tried again and got an SSL Alert: HANDSHAKE_FAILURE message. I then looked further and saw the CERTDB stuff and checked for our CA (Entrust), it wasn't there. I use d SSLADMIN to export the cert from SSLSERV, since I had to add it there whe n we first brought up SSLSERV. I added the Entrust cert to the SSLCERT PEM file and ran CERTDB EXEC to rebuild the SSLCERT CERTDB and CERTDBX files. I still get this SSL Alert: HANDSHAKE_FAILURE message. My target url is https://vm1.hqadmin.doe.gov/htbin/callup.cgi?name=kern My entry is #5 in the response. Is there any additional documentation for RXSSL? /Tom Kern /301-903-2211 On Mon, 20 Oct 2008 11:56:22 -0500, James Johnson [EMAIL PROTECTED] wrote: Somewhere in the Rexx code for SSL support there is a comment that says: To enable TLS support uncomment the following line That may not be the actual wording, but that is the jest of what it says . Have you tried uncommenting that line? James Johnson =
Re: RXSSL / Charlotte Problem
Thomas Kern wrote: I found that line in SSSREXX REXX and fixed it. I tried again and got an SSL Alert: HANDSHAKE_FAILURE message. I then looked further and saw ... The SSL Alert: HANDSHAKE_FAILURE message lead me to believe that the error is occurring early in the negotiation process. Before the certificates are involved. One possibility is that the server wants to use the AES cipher. Charlotte does not understand AES. If I remember correctly there is a trace or debug option that will display the negotiation process. That may shed some light on what is happening. James Johnson
Re: RXSSL / Charlotte Problem
Our SSLSERV is set up for FIPS mode. Here is a display of the SSLSERV STATUS that shows the allowed algorithms. We seem to always be using 3DES_168_SHA as the cipher suite. I will look for the trace/debug setting. ssladmin query status Maximum number of sessions: 100 Number of active sessions: 2 Administration port: NoHalt: False Maximum Log Size: 0 Operating in FIPS mode. Cipher_suites included : FIPS_3DES_168_SHA FIPS_DES_56_SHA 3DES_168_SHA DES_56_SHA Cipher_suites exempted : Trace Settings: Normal: OFF Connections: OFF Flow: OFF Address: 255.255.255.255:0 Connection: 0 Ready; ssladmin query sessions Peer_Socket Protected_Socket Label Cipher --- - -- 10.23.32.151:3649 205.254.145.35:992 VM1D 3DES_168_SHA (My terminal) xx.xxx.xx.xx:1042 205.254.145.35:992 VM1D 3DES_168_SHA (https session) Ready; /Tom Kern /301-903-2211 On Mon, 20 Oct 2008 13:45:28 -0500, James Johnson [EMAIL PROTECTED] wrote: The SSL Alert: HANDSHAKE_FAILURE message lead me to believe that the error is occurring early in the negotiation process. Before the certificates are involved. One possibility is that the server wants to use the AES cipher. Charlotte does not understand AES. If I remember correctly there is a trace or debug option that will display the negotiation process. That may shed some light on what is happening. James Johnson
Re: z/VM 5.2.0 on z10
Thank you for your suggestions of reasons to run 5.3.0 and 5.4.0. I had already presented them to management, but I have been instructed to use 5.2.0. My only hope of changing management's mind is to give him reasons NOT to use 5.2.0. Reasons to use the newer releases have not been persuasive. We're just starting a POC, so we have no good information on workload requirements. There's nothing in 5.3.0 or 5.4.0 that we MUST have. That means no requirement for link aggregation, for example. To put this in political terms, we're past Vote for me, I'm a better candidate. I need Vote against my opponent, because he's an extremist. The end-of-service date for 5.2.0 is not sufficient for vote against. By the way, I'm sad to say that an SF Bay Area congresswoman ran on, My opponent is an extremist a few years ago. She won. Dennis A government that is big enough to give you all you want is big enough to take it all away. -- Barry Goldwater -Original Message- Is anyone running z/VM 5.2.0 on a z10? I know it's supported (with PTF's). I want to know if customers are actually running it. My management wants us to build some new systems to host Linux guests on z/VM 5.2.0, even though most of our other systems are on 5.3.0. They want stability, and one of the ways they attempt to get stability is by staying behind and hoping other sites will find problems first. I'm concerned that if we're the only ones running the combination of z/VM 5.2.0 and z10, that we will find those problems first. Dennis O'Brien We are Borg of America. You will be assimilated. Resistance is futile.
Re: z/VM 5.2.0 on z10
Does better performance fly? Silly mgmt :) This isn't windoze - no reason to hang back like that. Marcy This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation. -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of O'Brien, Dennis L Sent: Monday, October 20, 2008 12:43 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] z/VM 5.2.0 on z10 Thank you for your suggestions of reasons to run 5.3.0 and 5.4.0. I had already presented them to management, but I have been instructed to use 5.2.0. My only hope of changing management's mind is to give him reasons NOT to use 5.2.0. Reasons to use the newer releases have not been persuasive. We're just starting a POC, so we have no good information on workload requirements. There's nothing in 5.3.0 or 5.4.0 that we MUST have. That means no requirement for link aggregation, for example. To put this in political terms, we're past Vote for me, I'm a better candidate. I need Vote against my opponent, because he's an extremist. The end-of-service date for 5.2.0 is not sufficient for vote against. By the way, I'm sad to say that an SF Bay Area congresswoman ran on, My opponent is an extremist a few years ago. She won. Dennis A government that is big enough to give you all you want is big enough to take it all away. -- Barry Goldwater -Original Message- Is anyone running z/VM 5.2.0 on a z10? I know it's supported (with PTF's). I want to know if customers are actually running it. My management wants us to build some new systems to host Linux guests on z/VM 5.2.0, even though most of our other systems are on 5.3.0. They want stability, and one of the ways they attempt to get stability is by staying behind and hoping other sites will find problems first. I'm concerned that if we're the only ones running the combination of z/VM 5.2.0 and z10, that we will find those problems first. Dennis O'Brien We are Borg of America. You will be assimilated. Resistance is futile.
Re: z/VM 5.2.0 on z10
Bank of America...and management drives a 10 year old Ford for stability, right? David Dean Information Systems *bcbstauthorized* -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of O'Brien, Dennis L Sent: Monday, October 20, 2008 3:43 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: z/VM 5.2.0 on z10 Thank you for your suggestions of reasons to run 5.3.0 and 5.4.0. I had already presented them to management, but I have been instructed to use 5.2.0. My only hope of changing management's mind is to give him reasons NOT to use 5.2.0. Reasons to use the newer releases have not been persuasive. We're just starting a POC, so we have no good information on workload requirements. There's nothing in 5.3.0 or 5.4.0 that we MUST have. That means no requirement for link aggregation, for example. To put this in political terms, we're past Vote for me, I'm a better candidate. I need Vote against my opponent, because he's an extremist. The end-of-service date for 5.2.0 is not sufficient for vote against. By the way, I'm sad to say that an SF Bay Area congresswoman ran on, My opponent is an extremist a few years ago. She won. Dennis A government that is big enough to give you all you want is big enough to take it all away. -- Barry Goldwater -Original Message- Is anyone running z/VM 5.2.0 on a z10? I know it's supported (with PTF's). I want to know if customers are actually running it. My management wants us to build some new systems to host Linux guests on z/VM 5.2.0, even though most of our other systems are on 5.3.0. They want stability, and one of the ways they attempt to get stability is by staying behind and hoping other sites will find problems first. I'm concerned that if we're the only ones running the combination of z/VM 5.2.0 and z10, that we will find those problems first. Dennis O'Brien We are Borg of America. You will be assimilated. Resistance is futile. Please see the following link for the BlueCross BlueShield of Tennessee E-mail disclaimer: http://www.bcbst.com/email_disclaimer.shtm
Cost accounting for Linux guest running under z/VM
We are in the process of getting ready to add production Linux guest and we need to know how you are charging back the customer for running Linux under z/VM. We currently charge a fixed fee per month for small, medium and large based on the size of the individual server's memory, cpu, and network connections. Any ideas would be greatly appreciated. Thanks. David Juárez Department of Veterans Affairs IT Specialist - z/OS and z/VM Systems Programmer 512-326-6116
Re: z/VM 5.2.0 on z10
Tell your management that you will sick Alan Ackerman on them if they will not let you install 5.3 or 5.4. :-) Regards, Richard Schuh -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of O'Brien, Dennis L Sent: Monday, October 20, 2008 12:43 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: z/VM 5.2.0 on z10 Thank you for your suggestions of reasons to run 5.3.0 and 5.4.0. I had already presented them to management, but I have been instructed to use 5.2.0. My only hope of changing management's mind is to give him reasons NOT to use 5.2.0. Reasons to use the newer releases have not been persuasive. We're just starting a POC, so we have no good information on workload requirements. There's nothing in 5.3.0 or 5.4.0 that we MUST have. That means no requirement for link aggregation, for example. To put this in political terms, we're past Vote for me, I'm a better candidate. I need Vote against my opponent, because he's an extremist. The end-of-service date for 5.2.0 is not sufficient for vote against. By the way, I'm sad to say that an SF Bay Area congresswoman ran on, My opponent is an extremist a few years ago. She won. Dennis A government that is big enough to give you all you want is big enough to take it all away. -- Barry Goldwater -Original Message- Is anyone running z/VM 5.2.0 on a z10? I know it's supported (with PTF's). I want to know if customers are actually running it. My management wants us to build some new systems to host Linux guests on z/VM 5.2.0, even though most of our other systems are on 5.3.0. They want stability, and one of the ways they attempt to get stability is by staying behind and hoping other sites will find problems first. I'm concerned that if we're the only ones running the combination of z/VM 5.2.0 and z10, that we will find those problems first. Dennis O'Brien We are Borg of America. You will be assimilated. Resistance is futile.
Re: Cost accounting for Linux guest running under z/VM
The best model is one I heard last week at the ibm conference. One large well known installation charges only for prime shift, with 3 different rates based on types of service. All charges are based on resource consumption. With the usage charges and prime shift only charges, users are convinced to move some batch operations off shift where resources are plentiful and free. This encourages high CPU activites that can be off shift to be moved off shift. The three different service rates relate to 7x24 support, prime shift support, and a best effort. Installations not charging for resource consumption in a mainframe environment tell their customers that tuning is not important, and neither is workload planning. This is good for IBM's profit as it increases the IFL requirement, but will end up with applications consuming more resource and can make other platforms much more attractive. One performance person is worth their power consumption in IFLs so to speak Most important is to understand your objective: chargeback and recover costs, or manage costs with chargeback and minimize resource requirements. Several installations have charged by server, and quickly found users will abuse the system unless encouraged otherwise. Juarez, David T. wrote: We are in the process of getting ready to add production Linux guest and we need to know how you are charging back the customer for running Linux under z/VM. We currently charge a fixed fee per month for small, medium and large based on the size of the individual server's memory, cpu, and network connections. Any ideas would be greatly appreciated. Thanks. David Juárez Department of Veterans Affairs IT Specialist - z/OS and z/VM Systems Programmer 512-326-6116
Re: Cost accounting for Linux guest running under z/VM
Interesting thread. Thanks. Cathy McBride Manager, Mainframe/Midrange Support Kable News Company, Inc (815) 734-5905 [EMAIL PROTECTED] We're still in this together! -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] Behalf Of Barton Robinson Sent: Monday, October 20, 2008 4:45 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Cost accounting for Linux guest running under z/VM The best model is one I heard last week at the ibm conference. One large well known installation charges only for prime shift, with 3 different rates based on types of service. All charges are based on resource consumption. With the usage charges and prime shift only charges, users are convinced to move some batch operations off shift where resources are plentiful and free. This encourages high CPU activites that can be off shift to be moved off shift. The three different service rates relate to 7x24 support, prime shift support, and a best effort. Installations not charging for resource consumption in a mainframe environment tell their customers that tuning is not important, and neither is workload planning. This is good for IBM's profit as it increases the IFL requirement, but will end up with applications consuming more resource and can make other platforms much more attractive. One performance person is worth their power consumption in IFLs so to speak Most important is to understand your objective: chargeback and recover costs, or manage costs with chargeback and minimize resource requirements. Several installations have charged by server, and quickly found users will abuse the system unless encouraged otherwise. Juarez, David T. wrote: We are in the process of getting ready to add production Linux guest and we need to know how you are charging back the customer for running Linux under z/VM. We currently charge a fixed fee per month for small, medium and large based on the size of the individual server's memory, cpu, and network connections. Any ideas would be greatly appreciated. Thanks. David Juárez Department of Veterans Affairs IT Specialist - z/OS and z/VM Systems Programmer 512-326-6116
Re: z/VM 5.2.0 on z10
O'Brien, Dennis L wrote: There's nothing in 5.3.0 or 5.4.0 that we MUST have. SMAPI was carried over gnarly RPC through 5.2 .. After 5.3 it's vanilla TCP sockets. So if you ever want to use PigIron http://pigiron.sourceforge.net to automate guest provisioning (or anything else) from scripting or GUI on your desktop, you'll need z/VM 5.3 or better. Now there's a reason to upgrade! :) -- Jack J. Woehr# Self-delusion is http://www.well.com/~jax # half the battle! http://www.softwoehr.com # - Zippy the Pinhead
Some REXX help
I copied this line from the REXX VM/REFERENCE It is from a sample SOCKETS SERVER exec (page 16.2). When I try to execute it I get errors. I have not seen code like this before, I wonder if anyone can explain the technique to me? if restnotsym;='' then call error 'E', 24, 'Invalid parameters specified' Its the restnotsym;=''that I don't understand. Thanks
Re: Some REXX help
On Tue, Oct 21, 2008 at 12:43 AM, Huegel, Thomas [EMAIL PROTECTED] wrote: if restnotsym;='' then call error 'E', 24, 'Invalid parameters specified' Its the restnotsym;=''that I don't understand. \= or /= Someone expected that to be substituted by the not sign Rob
Re: Some REXX help
The notsym; is supposed be a not symbol when it gets printed in the book. This means that this line is supposed to be If rest is not equal to null then call error... On my keyboard, this is If rest ^= '' then call error... You can also use for not equal. I will contact the z/VM Information developers and have this corrected. Thank you. Doug Breneman z/VM Development Endicott, NY From: Huegel, Thomas [EMAIL PROTECTED] To: IBMVM@LISTSERV.UARK.EDU Date: 10/20/2008 06:43 PM Subject:Some REXX help I copied this line from the REXX VM/REFERENCE It is from a sample SOCKETS SERVER exec (page 16.2). When I try to execute it I get errors. I have not seen code like this before, I wonder if anyone can explain the technique to me? if restnotsym;='' then call error 'E', 24, 'Invalid parameters specified' Its the restnotsym;=''that I don't understand. Thanks
Re: Some REXX help
Ah, but the semicolon makes it two Rexx statements. The same as If restnotsym; ='' then call ... Your syntax will be better if you remove the ; Regards, Richard Schuh -Original Message- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Rob van der Heij Sent: Monday, October 20, 2008 3:55 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Some REXX help On Tue, Oct 21, 2008 at 12:43 AM, Huegel, Thomas [EMAIL PROTECTED] wrote: if restnotsym;='' then call error 'E', 24, 'Invalid parameters specified' Its the restnotsym;=''that I don't understand. \= or /= Someone expected that to be substituted by the not sign Rob
Re: Cost accounting for Linux guest running under z/VM
I have done it 3 1/2 times. The first time was in FORTRAN under VM/370 R5. Two times at this job using paid-for products (VMAccount and CA-JARS). Both were too much information for management and not enough of the right information for me. The 1/2 time was much more recent thanks to a special survey last May that eventually ignored all IFL usage. I started that process in REXX and PIPELINES with the structured fields support. I think that could have potential but I don't have to do any real accounting anymore. They want to charge as if everything was a dedicated wintel box. I am out of the hard part. /Tom Kern Jim Bohnsack wrote: My IBM management, 25 years ago, went by the same idea that all users should pay a fixed fee. I finally convinced them that your way, i.e. a smaller fixed fee and then incremental charges made sense. I used the analogy of a hotel. When you walk into a Holiday Inn, you know that there is some kind of base rate, but when you ask for an extra bed or a corner bedroom or room service, you are charged an extra fee. 25 years ago, the situation was kind of similar to running a Linux guest. Most of the users were PROFS users, but we also supported IBM instructors who needed to bring up an MVS guest to prepare for a class. There was no good reason to charge user A opening a PROFS note and user B running a guest MVS and calling them the same. Writing the accounting code to handle the accounting records is no small task. I did it in the '80's and would share it except that that was 2 jobs ago and I almost certainly didn't keep any of it to share. Jim
Re: Some REXX help
On Mon, 20 Oct 2008 16:06:48 -0700, Schuh, Richard [EMAIL PROTECTED] wrot e: Ah, but the semicolon makes it two Rexx statements. The same as If restnotsym; ='' then call ... Your syntax will be better if you remove the ; Regards, Richard Schuh Standard HTML entities like gt; and lt; start with an (am persand) and end with a ; (semicolon). The whole string notsym; was supposed to be a NOT SIGN. True, if you typed that into REXX, it would think the ; was a statement separator. But you don't want to remove the semicolon, you want to map notsym; to / (slash) or \ (backslash) or not-sign. REXX does not require a not-sign -- I recommend using backslash. Alan Ackerman Alan (dot) Ackerman (at) Bank of America (dot) com
Re: VM Virtual CPUs and Threaded CMS Applications
On Mon, 20 Oct 2008 08:43:00 -0400, Bob Bolch [EMAIL PROTECTED] wrote: All execution of CMS linkage interfaces (CMSCALL, SVC 204, SVC202, etc.) and most common direct branch interfaces to CMS services executed on a non-b ase CPU result in running intercept code that switches that thread back to t he base CPU for execution of the service. Another way to say it is that all the code in the CMS Nucleus only runs on the base processor. Each CP service defines how it executes on a non-base processor. Things like IUCV and most Diagnose codes work just fine. In CMS Multitasking, non-ba se processors are intended for pure code not requiring CMS services. Bob Bolch Does this apply to CMSIUCV support also? Are you using CMSIUCV, or only C P IUCV? You didn't mention semaphores, but if you are using them, have a look at: APAR Identifier .. VM64489 Last Changed 08/09/10 SEMAPHORE FAILS IF MULTIPLE SUBTASKS WAITING_ Alan Ackerman Alan (dot) Ackerman (at) Bank of America (dot) com
