Re: VM/ESA 2.4 under z/VM 5.x
On Mar 14, 2006, at 10:51 PM, Alan Ackerman wrote: I hope you can find someone who has tried it. We haven't tried it. It certainly isn't supported. What hardware are you planning to run on? VM does not virtualize everything (in fact, cannot). z/VM 5.x is supported o nly on zSeries and System z9. VM/ESA 2.4.0 does not (officially) run on a z9. You could certainly run it under Hercules under z/Linux, although there are probably licensing issues, since presumably VM/ESA 2.4 is not licensed to *that* processor. Adam
Re: Requirements for encrypting tape drives for z/VM
On Mar 10, 2006, at 9:18 AM, Edward M. Martin wrote: Hello Alan, You wrote this. If there is an encryption solution, it should either use the hardware encryption facilities of the z9 hardware, or offboard encryption hardware. There should also be compression. And please remember that you cannot compress encrypted data -- compression must come first. Tape-drive compression is worthless if the encryption is on the mainframe. I think I follow but I want to make sure. I think you mean you can compress encrypted data but that the compression ratio would not be lousy. Would be lousy: in fact, it should be impossible to compress an encrypted stream. Specifically, encryption makes your data stream look like random bits, and random bits don't compress at all. If they DO compress, they're not random, since compression is nothing but exploiting regularities in the data stream and expressing the most common patterns in a coded compact form. And if you did encrypt the data first, then you would need to reverse the process in the exact order to be able to use that data. Well, sure, but that's the case with any encryption and compression scheme: encrypting a compressed stream will yield a different answer than compressing an encrypted stream. Applying the inverse operations in the wrong order will yield gibberish. Adam
Re: Requirements for encrypting tape drives for z/VM
On Mar 10, 2006, at 9:47 AM, Brian Nielsen wrote: Actually, it's usually worse than that - putting encrypted/random data through a compression algorithm usually results in a larger data stream than the original data stream. Well, yeah. A compressed text is essentially a codebook defining a sequence mapping from the original onto the compressed version, plus the compressed version. If the entropy of the input stream is very high, then the overhead of the codebook adds to the size of the stream, with no reduction for the sequence remapping. Smart compression algorithms, however, should be able to say, Wow. That didn't help at all! Never mind! and just give you the original stream in that case. Adam
Re: Installing Debian Linux
On Mar 6, 2006, at 5:28 AM, Shimon Lebowitz wrote: ~ # mkdir cdrom ~ # mount -t nfs 10.1.20.20:/cdrom /cdrom mount: Mounting 10.1.20.20:/cdrom on /cdrom failed: No such device ~ # And even if I did the mount, how would I get the installer to use it? I asked these questions last week on Debian-390, but that list seems a bit sleepy, and no one responded. The S/390 Debian port, to the best of my knowledge, only does http or ftp installs, not NFS. If your machine cannot reach the outside world, you could set up a mirror of the Debian pool on an internal machine. It is our intention to produce a VM installer for Sarge as we did for Woody, which turns one of your S/390 guests into the installation server; however, this one will come on 2 DVDs instead a whole bunch of CDs. It's not ready yet--I've been very busy with other higher-priority projects--but if you'll write me offlist I can see whether a) I can just ship you a DVD copy of the installation pool and give you some help configuring a machine to serve it up, or b) I can try to help you through a regular network install if you can get to the external network from your s390. Adam
Re: ICKDSF R17 CPVOL LIST - R/W DASD Required
On Feb 28, 2006, at 9:53 AM, Chris Langford wrote: David Boyes wrote: Hic jacent Priscius. -- db Antiqui colant antiquum dierum Also, shouldn't it be hic jacet, unless Priscius had multiple personality disorder or something? Adam
Re: ICKDSF R17 CPVOL LIST - R/W DASD Required
On Feb 28, 2006, at 10:00 AM, Huegel, Thomas wrote: And a damsel in distress, there must be a damsel in distress. (maybe ICKDSF will do) If you're seeing ICKDSF as a damsel, whether in distress or not, you're at least as deluded as those sailors who thought manatees were lissome mermaids. I recommend some serious shore leave. Adam
Re: ICKDSF R17 CPVOL LIST - R/W DASD Required
On Feb 28, 2006, at 10:06 AM, Daniel P. Martin wrote: Must be either too much or too little caffeine. I'm struck by visions of David skulking about the battlements, all Gollum-like, muttering My Priscius... while Alan is circling the moat on horseback, dressed up like Howdy Doody, singing Oh give me a home, with a moat of my own... Or maybe somebody has been slipping Adam's special blend of cough syrup into my coffee. In the immortal words of Wavy Gravy, the brown acid is not, specifically, too good. Adam
Re: I'm Back
On Feb 22, 2006, at 9:32 AM, Edward M. Martin wrote: Hello Adam, Just so I have it clear, I can run Linux for S/390 or zSeries under Hercules without any licensing issues. Yep. You don't need a license to run Linux. Adam
Re: MCLs for z/VM 5.2
On Feb 8, 2006, at 4:49 PM, Alan Altmark wrote: As soon as all the world's governments unite under a single authority (to wit, Chuckie) ...we will all have been fed to the lions anyway, and therefore won't really care about microcode updates. Adam
Re: DCSS as SWAP disk for z/Linux
On Jan 20, 2006, at 10:27 AM, James G. Stracka wrote: Can running from an NSS be done for a few penguins? Is it then practical to do it for a penguin farm? Yes. You save a few megabytes per image. It makes maintenance more difficult, though. Adam
Re: DCSS as SWAP disk for z/Linux
On Jan 19, 2006, at 9:18 AM, James G. Stracka wrote: I was reading a document that suggested using DCSS as the SWAP disk for z/LINUX guests instead of V-DISK. This sounded interesting for several reasons. Unfortunately, the document did not describe how to implement this. Has anyone done this or experimented with it? My guess would be that this DCSS would have to be defined Exclusive Write. Can the DCSS be inside the guest's Virtual Storage or must it be outside? How would this be formatted? And, how would it be mounted? I haven't done it with the newer DCSS stuff, but the old way is something like: Yes, it's EW. It's inside the guest's storage but outside Linux's (like with DCSS filesystems, you IPL the guest with mem=128M or whatever to restrict Linux to below where you have the DCSS. Format it with mkswap, and then swapon /dev/cssblk/whatever. I think. This is all from hazy memory. I haven't played with this in a year or more. Adam
Re: {SPAM?} DCSS as SWAP disk for z/Linux
On Jan 19, 2006, at 1:17 PM, Barton Robinson wrote: Yah, you might save 1% of a processor if you ever swap at 1000 per second or something like that - never bothered to measure it, just know that the cost of swap to vdisk is cheap, fast, and easy to set up, and everybody does it that way for those reasons. And, ahem, let me plug SWAPGEN, which entirely automates the construction of Linux swap prior to IPL from CMS. Just run SWAPGEN in your PROFILE EXEC, stick /dev/dasdb1 (or whatever) in /etc/fstab, make sure that the DIAG driver is loaded on IPL, and let 'er rip. (Even better: prioritized swap disks.) Just because you CAN swap to dcss does not mean you should. The only value to dcss has been conjecture, no proof. I was under the impression that Rob van der Heij (I think) had in fact measured DCSS to be slightly faster. Me? I use VDISK and SWAPGEN. I understand exactly how it works (for, er, obvious reasons) and it's always been plenty fast enough for me. I haven't measured it either, but I suspect that Barton's right: at the point at which the performance difference becomes noticeable, you have much worse problems than which fast memory-based virtual device you're swapping to. Adam
Re: OSA Express GbE performance
On Jan 18, 2006, at 9:15 AM, Aria Bamdad wrote: Hi, I was wondering if others have seen the problem I am seeing on a OSA Express Gigabit Ethernet as compared to a regular OSA Express Fast Ethernet. My first guess would be that your GigE uses jumbo packets and the switch is having to chop up and reassemble them to feed them to the smaller size the FE is expecting. Adam
Re: Can Z/VM 4.4 handle IQDIORouting?
On Jan 13, 2006, at 3:19 PM, Alan Altmark wrote: Ah, pictures. A crayon is worth a thousand words. (And its easier to markup a drawing that a configuration file!!) Tastes better too. Adam
Re: Can Z/VM 4.4 handle IQDIORouting?
On Jan 11, 2006, at 11:15 AM, Bob Heerdink wrote: I'm not sure I understand the entire issue, but my MVS sysprog has an interesting idea. I showed him VSWITCH article by Mark Bruce in the Sept 2004 z/Journan mag but I'm not clear what to do myself. Right now I have a Z/OS lpar that is managing a OSA express card that is attached to our lan network. This lpar routes packets to the hipersocket network which z/vm and the linux systems are a part off. I would like to eliminate that Z/OS lpar and run the OSA express from Z/VM. I looked at the tcpip manuals for the V4.4 we have and it does not mention the parms required to do the routing. I do not know if a V5 Z/VM would be able to handle it. It was that IQDIORouting of the IPCONFIG statement I showed you. I read some of the books on the vswitch you mentioned but I am not sure how it works or if it would be better than the hipersocket approach. Any suggestions? If you really mean, get rid of the z/OS LPAR then you just give the OSA to z/VM, set up TCPIP as a controller for a VSWITCH that uses the OSA, and give every guest a virtual OSA adapter coupled into the VSWITCH. If you need to preserve routing to z/OS, then I'd set up an external network route sending traffic to z/OS via z/VM, and use a physical HiperSocket with both z/VM and z/OS on it. This introduces another hop to z/OS. Adam
Re: OT: Cough Syrups Not Effective
On Jan 10, 2006, at 8:52 AM, Dave Jones wrote: This news doesn't sound too good for our Adam Thornton.;-) I guess it's back to Hot Toddies, then: In a tall mug: 1 Tbsp honey Juice of 1/2 lemon 1.5 oz scotch Fill with boiling water. Stir until honey dissolves. Drink. Several of these and you'll either stop coughing or stop caring. Adam
Re: OT: Be nice to your favorite IBMer...
On Jan 6, 2006, at 10:06 AM, David Boyes wrote: From todays Washington Post… http://www.washingtonpost.com/wp-dyn/content/article/2006/01/05/ AR2006010502329_2.html?referrer=emailreferrer=email Perhaps we should start a community retirement fund for our favorite IBMers. Sounds like they're gonna need it. I've already put a bottle of cough syrup aside for Chuckie. Adam
Re: z/VM 5.2 install
On Jan 4, 2006, at 3:08 PM, Mike Walter wrote: Miguel, Steve cited the Summary which states: - Your first-level system must be running z/VM 5.1.0 or higher. I specifically searched the full Guide for 5.1. The step you refer to states: o For a second-level installation your first- level system must be running z/VM Version 5. Note the discrepancy, the Summary lists 5.1 while the Guide is more general (and upward compatible) with only 5. Doc error. If I had time and enough interest, I'd submit an RFC for the Summary to match the 5 in the Guide. Then when 5.3 hits the streets there would be one less point of confusion for upgrading customers. Thanks for pointing out the vagaries of character searches. (Damned computers! Do what I want not what I ask!) :-) Aren't z/VM Version 5 and z/VM 5.1.0 or higher strict synonyms anyway? Adam
Re: OS/2 RIP
On Dec 27, 2005, at 12:29 PM, David Boyes wrote: There are only three products on Windows that I cannot easily replace. One is Intuit's Quicken (GNUCash is just too difficult). The second is Intuit's TurboTax with eFiling. The last is Visio (which is now owned by MS blech). It's interesting that these three products are exactly the ones I can't live without. I wonder if Intuit ever hears about that, or can free themselves from MS enough to do so. It would seem that writing a good object-oriented drawing tool to replace Visio shouldn't be *that* hard. The trick would be being able to read the symbol libraries that exist for Visio... Dia already is a reasonable Visio replacement. The trick is being able to import Visio files. *NOTHING* can do that, and there's a large bounty out for whomever manages to handle the file format. Even the converter for the Mac product ConceptDraw requires a running Windows box and uses Windows DLLs and the Visio player to do some semigluteal magic that actually doesn't work well either. Adam
Re: Just a stupid question
On Dec 15, 2005, at 12:47 PM, Víctor wrote: Hi all! I'm new in z/VM, and I must try to install it. My question is: I was reading documentation and you should use the same tape in 2 IPLs for doing different things. How do they do that? Do they check for the res volume to be initializated? No, you just don't rewind it between ipls. And the other (and most important question): Could I copy the tapes on disk and do IPL from these disks? Not easily, no. I have problems for reading 3480s in the machine where I'm trying to install VM. Maybe the CD or DVD IPL-from-HMC would work better for you? Adam
Re: 2nd-Level VM Install Question - Side question
On Dec 9, 2005, at 11:56 AM, Wolfe, Gordon W wrote: In actual fact, I met Terry Pratchett at a book signing two months ago for his latest novel, Thud!, and I asked him if scrumpy was the inspiration for scumble. he said, Oh, of course!. Mr. Pratchett lives in Somerset, by the way. I see. As I recall from the books, it's essentially an icewine made from cider, innit? That is, you ferment the cider, then you let the water freeze out leaving behind a more-alcoholic residue? That'd be one of those drinks of which Nanny Ogg is not averse to the odd pint, those drinks being, again, IIRC, the same drinks that most people drink out of very small glasses. Adam
Re: Network Problems?
http://www.sinenomine.net looks fine from io.com (as an arbitrarily- chosen remote host where I happen to have a shell account). Adam
Re: [Bulk] Re: Dirmaint newbie question - 3390 default size
On Nov 20, 2005, at 10:42 PM, Tom Cluster wrote: And if I don't have DIRME, which minidisk's version of EXTENT CONTROL am I supposed to change? Am I supposed to change 1DF? Is the one on 1DB simply a copy of the one on 1DF? When is it copied? When a backup is done? I don't know, but it's never mattered: Use the DIRMAINT commands SEND and FILE: SEND can send EXTENT CONTROL to your reader, and FILE sends it back to DIRMAINT, who figures out where it goes. Don't try to directly manage any of DIRMAINT'S files after the initial setup, but rely on the DIRM commands instead. Adam
Re: SSL connection to VM
On Nov 10, 2005, at 1:28 PM, Duane Weaver wrote: Does TCPIP on VM support SLL connection to port 992? Yes, if you're running SSLSERV. Adam
Re: SSL connection to VM
On Nov 10, 2005, at 1:55 PM, Duane Weaver wrote: Is that part of TCPIP on VM? Yes and no. What level of VM do you have? After 3.1, yes it is. Also, you can either implement SSLSERV on your own Linux server, or you could download the pre-built one from Sine Nomine. I, as the person mostly responsible for putting together the SSLSERV appliance, think that's the easiest way to do it. Adam
Re: VM SSL support
On Nov 10, 2005, at 6:26 PM, David Boyes wrote: Just copy the Linux files from the old level to the new level; there's no need to regenerate the database. No, you can't import a certificate. The export function is included so you can look at the requests and certificates. Except with all the built-in networking brain-damaged by the SSL IUCV stack, it's kinda hard to copy things to safe places that don't get nuked during an upgrade. We should really have a long discussion on how configuration data is managed in the SSL code at some point...the current method has a few challenges to overcome. Adam, we should probably look into a way to copy the certificate file to a temp VDISK, or move where the certificate file is stored to a separate minidisk in the appliance. That would be more consistent with the appliance toolkit conf dir setup anyway. E2. If this is an upgrade, then you should link your old SSL 201 disk at address 1201, and the new one at 2201, and run the following script. Should work fine. Just gotta find time to do it. Adam
Re: VM SSL support
On Nov 3, 2005, at 2:28 PM, Jim Bohnsack wrote: I am trying to install the new Sine Nomine SSLSERV code on a test system but I can't figure out how, with the existing SSLADMIN commands, to move the existing and unexpired certificate from the old SSLSERV database to the new one. I can export the certificate from the old database and do the SSLADMIN STORE fn CA label, but when I do a SSLADMIN STORE fn SERVER, I get the 'DTCSSL403E No certificate request is found for the certificate.' message. Since I was able to do the SSLADMIN STORE fn CD label, I thought that it might be all that was needed, but when I try, unsuccessfully, to connect, I can't and see a msg in the SSLSERV log saying 'DTCSSL501E No SERVER certificate was found with this label.' Hm. Obviously you could generate a new certificate request and then sign it with the CA you've importedbut I think you should be able to do the STORE of the existing cert too, once you have the CA that signed it in place. I'll take a look and see what I can figure out, but if someone knows the answer offhand. Adam
Re: Time Change Help.
On Oct 31, 2005, at 1:24 PM, Schuh, Richard wrote: And while we are at it, it would also be simpler if every clock in the world were set to the same time. Only problem is, who would get to determine the correct setting? :-) Chucky. Adam
Re: Edgar Beargen's heritage (was: Edgar and Tux)
On Oct 26, 2005, at 1:00 PM, Mike Walter wrote: One of Tux's cousins, Tucks, has formed an especially close relationship with Edgar. If you dare, you may search for Tucks at the next SCIDS via careful observation in the vicinity of where the copper pipe stand is inserted into Edgar. TMI. Way, way, way, WAY TMI. Adam
Re: Filemode 7-9?
On Oct 22, 2005, at 9:21 AM, [EMAIL PROTECTED] wrote: New Operating System -- Operating System / Virtual Universe (OS/VU) ... This will give us a base to develop an even more powerful operating system, targeted for availability in the 4th quarter of year 2010, and designated Virtual Reality. OS/VR is planned to enable the user to migrate to totally unreal universes. Chuckie? Are we still on target for this one? Adam
Re: Filemode 7-9?
On Oct 24, 2005, at 11:49 AM, Dennis Wicks wrote: The problem surfaced when it was first installed, on the hush-hush, at a customer site. The test began, and as soon as the first initiator was started OS/VU attemted to allocate an infinite number of buffers of infinite size so it could quickly cache all available data. At least then it'd be easy to calculate the Ackerman function A(5,5). Adam
