Re: running NTP with Linux under z/VM
On Oct 28, 2009, at 3:47 PM, Mark Jacobs wrote: Mark Jacobs Time Customer Service Wow. You're the guy I want to talk to. Time is going too fast. Can you please slow it down a little so I can get a breather? And really, REALLY turn down the speed on weekends, please. A fast-forward- though-boring-meeting feature would be nice too. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 smime.p7s Description: S/MIME cryptographic signature
Re: Young Developers Get Old Mainframers¹ Job s
On Oct 12, 2009, at 11:23 AM, Jack Woehr wrote: Howard Rifkind wrote: There is a whole bunch of highly experienced z/Mainframe systems and applications people out there without jobs. It's time, in the immortal words of the Firesign Theatre, to climb a tree, take off your shoes, and learn to play the flute! Defoliating a victory garden sure works up an appetite! Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 smime.p7s Description: S/MIME cryptographic signature
Re: REXEC / RSH
On Oct 9, 2009, at 10:34 AM, Jones, Russell wrote: Does anyone have any experience running remote linux commands from MVS batch? I have found that MVS TSO has REXEC and RSH, but I am been unsuccessful executing a remote command on linux. I can use rexec/rsh from one linux system to another, but not from MVS. Any help on using these commands, or other suggestions on how to execute remote commands will be much appreciated. I would guess that your Linux guest doesn't have rexec/rsh installed. WIth good reason: they're astonishingly insecure. If they're on the same physical machine as your MVS machine then you may not care, since there's no physical wire to be sniffed between them. As far as I know they do still exist in modern distros and you should be able to install them. OTOH, if you have a little budget, you could license NJE for Linux and have a very easy way to submit remote jobs to Linux. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Novell iPrint Server using SLES on System z?
On Oct 6, 2009, at 11:50 AM, Eugene Carter wrote: 1. Are other organizations out there using iPrint on SLES (on x86) who are also using SLES on System z? 2. If Novell iPrint were an option for SLES on System z (and you were using iPrint) would you host it on System z? If not, can you share your rationale/perspective? 3. Does there appear to be a business case/demand out there for Novell to support iPrint under SLES on System z (that Novell is unaware of)? 4. Is it even worthwhile to explore (like I don't have enough to do already)? NDPS is *so* 1998. Unless you still have actual Netware somewhere it's just using LPR/LPD and IPP anyway, I think. The rest of the world is using CUPS these days, as far as I can tell, which works fine on z. So, my responses in order would be: 1) dunno 2) no--I'd use CUPS, which is open and well-supported 3) *I* don't see it 4) no Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Adam is moving on...
Some of you know this already, and some of you don't: Last month, I was offered a great opportunity at another organization that will allow me to focus my career in a way I have been interested in for quite a while. I accepted that position, knowing that my customers at SNA would be in good hands after I left. As a result, this Friday is my last day with SNA. Sine Nomine and its owners have been quite supportive of my move, for which I am very grateful. I intend to continue reading the Linux on 390 and VM mailing lists, but I am no longer going to be working with zSeries boxes as part of my job (I will continue to play with Hercules in my Copious Free Time), so my advice may grow even less useful than it currently is. Anyone who wants a non-work email address of mine and doesn't already have one, please contact me off-list. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Renaming a volume
On Sep 25, 2009, at 1:52 PM, Aria Bamdad wrote: Is there a reason why you create 3 partitions on one dasd? I would define 3 minidisks to VM on that one DASD or different ones and format each disk individually with one partition per disk. These can be freely moved to other volumes without any care. That's the way RH does it by default. It's not really a good idea under z/VM. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Installing Redhat 5.3 or 5.4 in Hercules
On Sep 21, 2009, at 4:42 PM, Alan Altmark wrote: I'm sorry to be the bearer of bad news Well, then, ask Chucky! He *LOVES* to do it. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dasd_diag_mod question
On Sep 11, 2009, at 10:36 AM, Larry Uher wrote: I guess my question would be why is a complex EXEC needed to do a normal system administration task? A second question is why didn't Novell provide a straightforward method for doing this and document it in a manual (without using a complex 3rd party EXEC) ? Complex? After the description and the license and update comment blocks, it's about 240 lines. Of those, about 120 are the various ways the program can exit (with descriptive text) and the help message. That leaves about 120 lines of actual code, and those lines are not dense (e.g. one line per pipe stage). That handles both the raw FBA and the DIAG device cases. It's not a normal system administration task on any other Linux architecture. It's really quite unusual for your swap device to be destroyed and recreated every time you power on the machine. In the normal case the swap signature sits there between power cycles. That's why Dave and I wrote the thing in the first place--Linux does not generally consider needing to format the swap device as part of its normal bootup routine and rather than mess with system startup scripts and their ordering, we thought it was a lot easier to just take care of it in CMS before handing control to Linux, so that the swap device was pre-prepared like it expected. And that, by the way, is the reason Novell doesn't do it: it's not a task that's necessary on other architectures, and Novell, not surprisingly, likes to keep as much the same between platforms as possible. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dasd_diag_mod question
On Sep 11, 2009, at 12:02 PM, Hall, Ken (GTS) wrote: My complaint with SWAPGEN going back to when it was first announced was that it needs to know the number of blocks to format. This means that if the size or number of the vdisk(s) changes in the directory, the VM admin also has to go to the target machine's 191 disk and update the PROFILE EXEC so the right number of blocks get formatted on the right devices. Having to change things in multiple places seemed like something to be avoided. Hm. Did you ever send us a requirement for that? If so, I apologize for having missed it. Since we already look for the number of blocks in the reuse code, I think it should be pretty straightforward to do that check and then use the number of blocks detected if the user doesn't specify. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dasd_diag_mod question
So, for those of you playing along at home: I'll eventually release a new VMARC, but I need to find and update the help file sources first, and I need to do the whole thing under update control and build the package, and in the meantime: I'm using the 0803 SWAPGEN as my starting point. Lines 243-244 read: parse var msg . . . . . newblks . if blks newblks then signal WrongBlks/* Mismatch, error */ Between these two lines, stick: if blks = '' then blks = newblks (that's two single quotes, not one double quote) And there you go: if you use REUSE (as you would if the VDISK is specified in your directory entry) then you no longer need to specify the number of blocks. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dasd_diag_mod question
On Sep 11, 2009, at 12:59 PM, David Boyes wrote: It sounds like the issue is more that it's a 3rd party tool than that it's done the way it's done. If either of the distributors wants to include SWAPGEN, we're open to discussing the idea. No one has asked. They don't even need to ask, actually. It's under the Artistic License, which is OSI-approved. Just saying. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dasd_diag_mod question
On Sep 11, 2009, at 1:15 PM, David Boyes wrote: My complaint with SWAPGEN going back to when it was first announced was that it needs to know the number of blocks to format. Actually, it needs to know how many blocks to define if you don't want to code it in the directory entry -- it always formats everything. If you put the VDISK in the CP directory entry and use the REUSE option, SWAPGEN will simply format what's there and write the signature on the disk. Well, NOW it will, with the change I just posted. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Cannot Login to zLinux Server
On Sep 9, 2009, at 11:30 AM, West, Judson wrote: I am running a SLES10 server under z/VM. This server also runs NIS client. Some of my users cannot login to the server using their NIS login name, some can. Actually, they do get logged in but the login does not complete and ends with a message saying Connection to servername closed. For those that do complete a login, if they try to su to any of the available root user names, it does not change the userid to root. If they give the wrong password for the root username, the system correctly detects it and denies the switch. There are no error messages to indicate why this is happening. The contents of the /etc/passwd file are similar to /etc/passwd files on other servers in the shop, since they are basically clones. The server has been rebooted with no effect on this issue. Any thoughts on where to go from here? Turn on debug in your PAM security stacks and see if you get useful diagnostic output. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Linux Processor Support
On Aug 28, 2009, at 12:02 PM, Mark Post wrote: On 8/28/2009 at 8:24 AM, Billy R. Bingham billy.bingham...@suddenlink.net wrote: Greetings all, Is there a central site that lists the different versions/distros of Linux for System z and what processors they support or will run on? SLES9, RHEL 3 and 4, G5 and up to z10. SLES10, RHEL 5, z/Architecture up to z10. SLES11, z/Architecture up to z10, but only z9 and z10 are officially supported. Slack/390, Debian/390 will run on anything from G5 up to a z10, but only in 31-bit mode. Slack/390 will be getting 64-bit as soon as I can get the time to work on the installer some more. Everything else is done. Next release of Debian may drop 31-bit support, and will offer 64-bit support. There seems to be some debate about whether to do a biarch release or separate s390 and s390x right now, although I haven't been tracking that discussion as keenly as I used to. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Quest re: Subversion on SLES 11.0
On Aug 27, 2009, at 12:27 PM, Michael Simms wrote: I have been trying to install a package called Subversion. Since I could not find a binary for SuSE SLES 11 on zVM, It was on the SDK in SLES 10. Maybe it's there? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Quest re: Subversion on SLES 11.0
On Aug 27, 2009, at 1:35 PM, Richard Troth wrote: Please don't lose heart about building it yourself. If you can find an RPM, and you trust it, great! But if you can't find pre-built packages or you don't trust the builder, or if you need customization or require some up-to-date release, building your own is the way to go. If you are committed to in-house compilation, then you can justify having and maintaining a suite of requisite packages and libraries so that next time something like SVN comes along it will just make and life will be beautiful. You still should find or build a spec file, and run rpmbuild to do the actual make. Going outside the package management system hurts. Trust me on this. I realize that this is very different advice than the Adam who worked in Rick's office a zillion years ago would have given, but from a maintenance standpoint: 1) Use the distro version if there is one--even if it's on the SDK 2) If you can't do that, at least roll it up into the distro package management system so you can use your distro tools to query installed package version level and so forth Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dynamicallhy Changing Linux Guest Network
On Aug 14, 2009, at 10:01 AM, Lionel Dyck wrote: Does anyone have a z/vm and/or linux script that they could share that can be used to dynamically change the linux servers network when the server is brought up at a dr site and/or when the network addressing is changed? I've tried playing with it without success - keep missing a piece here or there. This is inherently a network-specific question, and I don't think there is a one-size-fits-all approach. A DHCP server that, before starting, does a Q CPUID and swaps the appropriate lease-granting file in is probably the most straightforward approach, but how to do this and do it right is going to be extremely dependent on the specifics of what changes between the DR network and the normal network, or the original network and the changed network. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dynamically Changing Linux Guest Network
On Aug 14, 2009, at 10:33 AM, David Boyes wrote: Actually, you could trivially construct a Linux NAT appliance that would translate between the DR external addresses and the normal ones. It would simply substitute for the default route in the normal network, and NAT appropriately. You just don't bring it up in the normal configuration. In fact iptables provides a netmap function so, as long as you keep the networks the same size and put the guests at the same host-part-of- the-addresses, you can do it in a single line rather than having to do a map per host. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: IBM, Novell to slash Linux prices for mainframes
On Jul 29, 2009, at 11:52 AM, Mark Post wrote: I actually got a reply from him, but it was rather dismissive, The Register? Dismissive? THAT COULD NEVER HAPPEN. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Adding dasd technique
On Jul 28, 2009, at 9:18 AM, Bauer, Bobby (NIH/CIT) [E] wrote: We are running Redhat V5 with z/VM V5.4 with all 3390 dasd. I need to add another volume to one of my servers. I also have 2 swap disk defined using Sine Nomine's swapgen macro in the profile exec for the server and the mkswap and swapon commands in rc.local: If you're running swapgen then you don't need to mkswap or swapon. You should probably put dasd=200-205,700-701. But you should also use the by-device-address form of talking about your dasd (rather than dasda, dasdb, and so on) in /etc/fstab precisely so you don't have to care as you add and subtract devices, as long as they stay at the same virtual addresses. Also don't forget to rebuild your initrd after every time you change dasd configuration. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Other OSs instead of RHEL/SUSE for LCDS?
On Jul 21, 2009, at 7:54 AM, Shawn Wells wrote: What is your end goal? As there aren't any other Linux distributions supported by IBM on System z, you may be out of luck but if you give us details on what you're trying to do, we may be able to assist. Note the by IBM bit there. For instance, Sine Nomine has a service offering that's kernel-and-architecture agnostic and applies to anything in Debian stable main (http://packages.debian.org/stable/) (not all of those packages are applicable to all architectures, but the great majority are). Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Bridge-utils for SUSE SLES 10 SP2
On Jul 19, 2009, at 7:52 PM, David Boyes wrote: I've never even heard of it, and I've had no problem with using openVPN. What does it do, and what commands/programs/libraries does it provide? It¹s used with OpenVPN to do transparent layer 2 bridging. Most people use OpenVPN at layer 3 with routed networking. With OpenVPN you can get bridged layer 2 between the OpenVPN endpoints just by using the tap device rather than tun. Only if you need to bridge to machines not in the OpenVPN star (server + multiple clients) should you need to get fancy about it. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Opensource DB Firebird
On Jul 15, 2009, at 5:35 PM, Marcy Cortes wrote: Has anyone here used this? We have an app considering trying it on zLinux as a new temporary home. I've played with it on Intel, but not on z. I suspect it will build and run just fine. The question I had, though, when I played with it on Intel, was why? That is, between MySQL and PostgreSQL, it seems like the Open Source RDBMS bases are pretty well covered; I didn't see any really compelling reason you'd use Firebird instead. Why *do* you want to use it? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: SLES10 SP2 question
On Jul 16, 2009, at 11:45 AM, Ray Mansell wrote: I need to move a SLES10 SP2 server from one DASD volume to another (since we just installed a new storage box). However, after the move I discovered that the server's boot parms included the following: root=/dev/disk/by-id/ccw-IBMetc Naturally, the id of the new DASD device is not the same as the original, and the server refuses to boot. If I boot the server from its original home, is there a way to change the root= parm to be something rather less specific so that it will then boot in its new home? We wrote a tool to do this: http://download.sinenomine.net/sane-dasd-update/ Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Download directly to z/Linux server ?
On Jul 9, 2009, at 2:55 PM, Lionel Dyck wrote: In an effort to save time and reduce overall network traffic I would like to be able to download SLES ISO files from Novell from my Linux on z server rather than downloading them to my pc and then uploading them to z. I've looked, without success, for information on how to do this (I may have not used the right keywords). My thought is that I need to use a X server on my windows pc to connect to the z server and then open a web browser on the z to connect to Novell where I'd sign in and then download. Can anyone point me in the right direction? Wget? You can pass credentials to wget, I'm pretty sure. Or use a text-mode browser like w3m. As long as the Novell site doesn't require javascript you should be OK. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Unable to logon to Linux under VM
On Jun 24, 2009, at 6:54 AM, Vincent Getgood wrote: Hi all It looks like I have a firewall problem on the linux guest. I've checked with my N/W team, who tell me the SSH port is open on all firewalls between me and the mainframe. However, when I try to SSH in, I see the following messages on the VM guest console: - sfw2-inext-drop-deflt in eth0 out mac ... etc Which seems to suggest that suse firewall is blocking SSH. I can't logon to disable the firewall, so I think I'm stuck. Can you log in on the console? Do that and service SuSEFirewall2 stop (I may have the name or capitalization of the firewall service wrong, but it's something close to that) Then you should be able to ssh in and fix stuff. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Unable to logon to Linux under VM
On Jun 24, 2009, at 9:35 AM, Mauro Souza wrote: Adam, In this case he needs to log via ssh to fix a configuration issue preventing him from logging from console... Whoops. I missed that. Hmmm. Maybe the SuSE installation left VNC open? I doubt it, but you could run nmap against it from another host and see what it's listening on Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: To SHARE or NOT ... that is the question(2)
On Jun 22, 2009, at 9:27 AM, David Boyes wrote: How about Linux guests that have file systems stored on FCP attached SCSI devices, can they be shared r/o with other Linux guests? My understanding is that, no, they can not be shared. Am I mistaken? I suspect that you would still need some kind of cluster file system (eg, Lustre, GFS, OCFS, etc) to make that safe. To amplify David's response: I think it works like other kinds of DASD: if *everyone* has it read-only, that's OK. If *anyone* has it read-write at the same time that anyone else has either a read-only or read-write link to it, then you need some sort of cluster-aware filesystem to share it correctly. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Oracle Enterprise Manager
On Jun 17, 2009, at 12:25 PM, Kern, Thomas wrote: Is it reasonable for a Management agent to use 1.5% (or more) of the system CPU in each server? No, it's not reasonable. But it's also, alas, not uncommon. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: shutdown/reboot question
On Jun 17, 2009, at 2:31 PM, Sue Sivets wrote: Is there any way to give a user the ability to shutdown and reboot a Suse z/linux system without giving him the root password? In simple terms, one of my users is asking for the root password so he can reboot the machine when he needs to because the project he's working on has crashed and generally caused a lot of problems. I found a couple of notes from 2007 that were about a shutdown userid on a Redhat system. Will something like that work on a Suse10 system, or is there a better way of accomplishing what I need? If it will work, can someone tell me what I need to do in order to make it work? I was thinking about using SU, but as far as I know, he would still need the root password, and then I'm back where I started. Is there a way to give him some kind of alternate root password that doesn't open up the whole ball of wax? If anyone has any other ideas, I would really like to hear them. I really don't want to give out the root password if I can avoid it. The sudo command is built for situations like yours. Create an /etc/ sudoers file that allows use of /sbin/reboot and /sbin/shutdown (if that's where they in fact are) for certain users. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: LCS problem Installing SLES 11 in partition ( more)
On Jun 17, 2009, at 2:10 PM, Mark Post wrote: Mike, I just booted up the SLES11 installation stuff on my Hercules system. Here's my parmfile and hercules.cnf: ramdisk_size=65536 root=/dev/ram1 ro init=/linuxrc TERM=dumb conmode=3270 insmod=fs3270 ... PGMPRDOSLICENSED Surely this is not required. Please, tell me it's not required. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: LCS problem Installing SLES 11 in partition ( more)
On Jun 17, 2009, at 3:20 PM, Mark Post wrote: On 6/17/2009 at 3:55 PM, Adam Thornton athorn...@sinenomine.net wrote: -snip- PGMPRDOSLICENSED Surely this is not required. Please, tell me it's not required. To my knowledge it is not required by anything to do with Linux. That is what I believed until I saw it in your config. If it's just in there because the config started life with it already in place, then yay. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: To kick or to clone ... that is the question
On Jun 10, 2009, at 1:21 PM, David Boyes wrote: So you get the 5 minutes down to what? 3-4? A little under 2, actually. Most of which is spent writing like crazy to disk. I've also been tinkering with the idea of creating the disk image in storage and then writing a utility to write it out using full track writes. I don't know if it would actually be any better than DDR (or hey, write the input to the pipeable version of DDR...hmm), but it seemed like it would be interesting to try. You could also use the (undocumented, but stable since 5.1 so probably not going anywhere in the near term) ECKDREST pipe stage used for installation (there's a corresponding FBA version too). It's on MAINT 22CC or 2CC; the Install Quick Guide says which. The format of the input is pretty trivially determinable by examining the part files on the z/VM installation DVD. This is kinda what I wanted to do for NOVSTART at one point, but I never got around to actually *doing* it. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: line printer question
On Jun 3, 2009, at 12:12 PM, Alan Altmark wrote: tres fabu Someone should tell Chucky that the bill is probably not going to pass the New York Senate. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Linux Boot Verification
On Jun 1, 2009, at 3:07 PM, Lionel B Dyck wrote: If you don't have anything like that you might check out big brother from http://www.bb4.org/ - i've not used it with z/Linux but it should work. We used it for monitoring a number of messaging servers running various flavors of linux and unix. Nagios also works well, and the plugin scripts are very easy to create. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: DB2 on z/VM SuSE 10.2 box sizing - starter values ?
Way too much V STOR on each of your guests. Try reducing it substantially and backing with prioritized swap-on- vdisk after measuring actual memory requirements. *IF* your migration sources are actually using all that memory for something other than cache, you're going to have a painful migration. The good news is, they probably aren't (but of course I can only argue that historically, as I have no knowledge of your actual workload). Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: DB2 on z/VM SuSE 10.2 box sizing - starter values ?
On May 19, 2009, at 2:11 PM, bruce.light...@its.ms.gov wrote: Bear with me while I'm learning, please. you say to reduce the real for my virtual machine from 246900k and the swap from 3G ? My DB2 is already complaining that there is not enough memory to allocate any bufferpools - so I would have guessed growing the real to 1G. Maybe you were looking at the LPAR allocation for z/VM where the sysprog gave VM 9G of cstor and 3G of estor ? I was looking at 2 and 3, which are large, and I mentally inserted another 0 on the main stor of the first one. 250M is probably kind of tight, actually; I was reading as 2.5GB. My mistake; thanks for the correction. 256-512MB usually seem like good starting points to me, but some loads really do require more. Start #2 at 512MB and see where that takes you. If you need more, you need more. No need to reduce swap, as long as you have page space to cover it. Although I'd do a smallish higher-priority space for normal heavy load conditions, and a larger one for extraordinary load conditions. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Stateless Linux for zSeries
On May 13, 2009, at 2:16 PM, Alan Ackerman wrote: Someone here says we should not do Linux on zSeries because you cannot do stateless computing on zSeries. Of course, the first question is What the heck is stateless computing? I found some links: Stateless Linux at http://fedoraproject.org/wiki/StatelessLinux. Linux on IBM eServer zSeries and S/390: Large Scale Linux Deployment SG24-6824-00 at http://www.redbooks.ibm.com/abstracts/sg246824.html?Open . It is from 2002, though. Is there a more recent version? Has anyone had any experience with building a stateless Linux on zSeries? Any words of wisdom? Um, yeah. This is really much easier to do with zLinux than with discrete versions. There's been a whole lot done on highly-shared installations, including things like putting the IPLable kernel in a shareable saved segment. No, the Fedora implementation of stateless Linux isn't zSeries, but it's not like it's either a new idea or a particularly difficult one. It can be tedious and tricky to get right, but you can realize significant space and management savings once you've gotten there. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: HCPLNM091
On Apr 30, 2009, at 1:11 PM, James Chappell wrote: z/VM is at 5.4. Error 91 from CP DEFINE VFB-512 AS 301 BLK 1048576: HCPLNM091E DASD 0301 not defined; vdisk space not avilable You could try tossing a trace i at the top of SWAPGEN and making sure it's actually failing on the DEFINE, but I sure can't think of anything else that would be giving you those symptoms. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: VMUR receiving text files
On Apr 30, 2009, at 1:31 PM, Jonathan Bradbury wrote: Has anyone had any luck being able to read text files from the reader using VMUR? I have sent a F80 text file and am not able to view the received text file, there is always some form of header attached either the NETDATA or the old style header depending on how I did the sendfile. Is there a simpler solution than writing a perl script to read in the netdata headers and then print the file out? Thanks! I think PUN (NOH probably will do the trick. There's a netdata parser in the BSD-licensed ancient NJE code (the basis for what the NJE IP Bridge is based on, but really really ancient), and I wrote one in Perl a few years ago for SMTPPLUS, which is probably still kicking around somewhere, so you don't HAVE to write your own netdata parser/packer. It's not very hard to do though. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Dumping Flex disks prior to migration
So, as with many people, my dongle is running out soon. I have several VM systems. So I'm dumping all my disks to AWS-format emulated tape files, in the hope that someday down the road I will be able to restore them to something else. I chose awstape rather than faketape because of its better interoperability (e.g. PIPE DEBLOCK AWSTAPE). To do this in an automated fashion, I've written a Rexx script to walk through my DASD, define spanning MDISKs, and do a DDR dump. Yes, I'm going to have to go back with standalone DDR and do my sysresses and do spxtape to get my spool, but this gives me a decent first cut of everything else (which is, to be frank, mostly logged-off Linux guests). The script relies on the fsihost command to send commands to the Linux host and receive replies, and on a couple helper scripts on the Linux side. These enable me to create new awstape volumes as I go, and to gzip them once done (since I don't have disk for 160 mod-3s unless I compress them; most of them are compressing pretty well). If there is interest, I can either email these things out to people, or (perhaps more usefully) put them up on our website. As written it's pretty specific to my system (that is, I assume all the DASD is in a contiguous range and you can just specify the start and end volumes, and I assume that tapes are in /faketape, and that you want them named devno.aws), but it's fairly easy to change if you know even a little Rexx and shell scripting. Is there interest? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Dumping Flex disks prior to migration
Well, I've gotten two responses, so that's a mandate. http://download.sinenomine.net/flex-dumper/ All files are ASCII text. This is definitely *not* production-ready code: it is undocumented, and decidedly not designed for flexibility or general applicability. It is a quick and dirty hack that works for me, and that's all I will claim for it. Adapt it to your needs. Test carefully before deploying. No warranty expressed or implied. These files are in the public domain. Talk to your Flex-ES reseller to get a copy of the FSIHOST command, without which this will not work (although it can easily be adapted to a P/390-or-IS-or-Multiprise- based system, since that was what I adapted it *from* in the first place). Read the README first. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Active Directory Use from MediaWiki
On Apr 13, 2009, at 10:34 AM, Klein, Robert (NIH/CIT) [C] wrote: We are in the process of setting up a wiki service for our organization using MediaWiki. It is important that we be able to authenticate via Active Directory rather than users have to set up separate ids on the wikis. There is a product, Plexcel, which does this integration for x86 Linux, but it is not available for zLinux. The company has no plans to port to zLinux unless there is a zLinux simulator that can run on x86_64 or i386. My questions are: * (1) does anyone know of such a simulator? * (2) failing that, does anyone know of a comparable product to Plexcel that runs on zLinux; * (3) failing that, is there a product which provides similar integration with an LDAP server? Thanks. 1) Yes, but you don't want to go there 2-3) As long as PHP is built with LDAP support, I think you should be able to do LDAP auth over TLS/SSL to your AD controller and have it work fine. Take a look at: http://www.mediawiki.org/wiki/Extension:LDAP_Authentication/AD_Configuration_Examples Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: error IPLing SLES11 instalation image
On Apr 7, 2009, at 12:51 PM, Daniel Vila wrote: Hi everyone, I'm trying to start the SLES11 instalation under 5.3 ZVM but load process is interrupted after a panic kernel message (SLES10 worked without problems using the same ZVM) Any ideas to find a fix? Your initramfs is corrupt. Re-download it; make sure it's BIN FIX 80. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Solaris v. Linux
On Mar 27, 2009, at 9:22 AM, Erik N Johnson wrote:
What's really great about this is that for a z/Linux
farm you can easily use 9p to create a single virtual host whch has a
/mnt all full of:
/mnt
/host1/proc
/host2/proc
...
/hostN/proc
then a perl (or shell or python) script ( or ANY filesystem-aware
program, which is pretty open-ended) can easily do:
foreach host in hosts {
displayRelevantInfo( /mnt/host/proc);
}
That's really cool.
Adam
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Re: Solaris v. Linux
On Mar 26, 2009, at 1:13 PM, Jeff Savit wrote: We deliberately don't break compatibility in the long-term-support version of the OS, as that would be a Bad Thing for our customers who count on tools to work the way they did even if a newer and even better (but not strictly compatible) replacement is available. Hence Solaris non-POSIX /bin/sh. Pardon me while I go vomit in this corner here. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Solaris v. Linux
On Mar 25, 2009, at 2:43 PM, Mark Post wrote: Why? Almost every Linux distribution has made exceptions to their own rules. Just look at Java. Up until recently, it was not open source, but it gets included anyway. As far as Slack/390 goes, that was my project, and although I didn't like the situation at the time, I wasn't going to have a philosophical meltdown over it. If it hadn't been for the cooperation IBM received, the open source proponents inside of IBM would never have gotten the code released. Sometimes compromise and patience win in the end. It certainly did this time. Almost. I find Debian's insistence on license purity admirable from one standpoint, but irritating from several others. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Solaris v. Linux
I may have been misunderstood. It peeves me that my web browser has to be called Iceweasel, but almost all of my internal infrastructure is running Debian. That's because maintenance and updates and local configuration-without-having- it-clobbered-by-an-upgrade all works *so* much more easily there than under the, ah, more-accepted-as-Enterprise Linuxes. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Windows an linux under z/VM
On Mar 23, 2009, at 2:59 PM, Richard J Moore wrote: Not a chance unless: 1) there's a Z port of WIndows, which I doubt 2) there's an Intel emulator that runs under Z. Not heard of one. Richard Bah. #2 is old news. http://www.fsf.net/~adam/NT-on-390-desktop.png Back in 2002. You *can* do it. You just don't want to. According to Mantissa, #1 is also happening (well, a pretty fast s390x- based Intel emulator). Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Old IBM Mainframe - Still Useful?
On Mar 23, 2009, at 3:03 PM, Erik N Johnson wrote: Microsoft doesn't know how to write software for professionals. Their best stuff has always been targeted at people who want their computer as easy to use (and as functional) as a toaster oven. Unfortunately Mac OS X does the ease of use thing a lot better. And it's a nice little BSD Unix under the hood. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Old IBM Mainframe - Still Useful?
On Mar 23, 2009, at 4:58 PM, Andrew Wiley wrote: Okay, you've given me a lot to consider. My first question is about Linux/390. I'm an avid linux user and I assumed from my experiences that the difference in underlying platforms is handled entirely by the kernel; userspace programs, with only a few exceptions, compile and operate similarly no matter the platform. The comments I'm reading here seem to imply that this isn't the case. They're wrong. From a non-root-userspace perspective, mainframe Linux is Linux. Period. Also, I'm not sure why the Hercules emulator keeps being recommended as an alternative to mainframe linux. Do linux installations in LPAR's on Hercules perform better than existing linux virtual machines, or am I missing something else obvious? No. If your goal is a Linux machine a virtualized Linux that doesn't require processor emulation is a better use of your cycles. If your goal is to play with a mainframe Linux, then maybe not...for what you want to do, though, it sounds like Linux, rather than particular-architecture Linux, is what you want. In which case, virtualize the native hardware. If you can get your hands on a mainframe, some disk, a reasonably decent network interface, and z/VM 4.4, you might find it worthwhile to run Linux boxes under z/VM. The last one of those is going to be the tricky part. 4.3 would be OK, but prior to partway-through-4.2 you couldn't really do guest LANs effectively, which in turn mean that networking your penguins becomes really much more irritating than you want. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Access linux files from CMS
On Mar 19, 2009, at 9:15 AM, Dave Jones wrote: Hi, Bernie. Snag a copy of the EXT2 tool from here: http://www.sinenomine.net/products/vm/ext2free It will do exactly what you want.read *and write* Linux files in either EXT2 or EXT3 file systems. Have a good one. Bernie Wu wrote: Hi Listers, Is it possible to access linux files before we issue the ipl 100 command to bring up the guest ? Let me explain. We have 3 separate environments, test, dev/qa and prod. Each environment uses different device addresses for the network configuration, 0.0.a04 for test, 0.0.a64 for dev/qa and 0.0.a60 for prod. The golden master and the cloning process takes place in our test environment. When we move the disks to either dev/qa or prod, the device addresses have to change. Thus the need to modify the network configuration files. Currently, we do this process manually. I know that the PROFILE EXEC is executed to allocate the vdisks. Would it be possible to execute another rexx exec to manipulate the linux files before issuing the ipl ? Any ideas ? What Dave suggests will work. What I generally do is to put a control file on a minidisk (191, if you're using 191 A-disks instead of SFS), and have a Perl program early in the Linux boot that uses Rick Troth's cms filesystem utilities to read that file and rewrite the files on the Linux guest. Then--depending on where in the boot process you are--you can either continue or reboot to pick up the new info. I do it this way, though, because I'm a little more comfortable doing that sort of control-file rewriting in Perl than in Rexx. YMMV. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: SUSE 9 on Mupltiprise 3000
On Mar 13, 2009, at 12:48 PM, Fridrich, John wrote: Hey out there... Has anyone installed SUSE 9 under z/VM 4.4 on a Multiprise 3000 (7060)??? I have the boot-strap installed and working up to the network part... Can't ping outside the machine so I can't FTP the install back in. Not sure how to configure... or what network interface to use... The 7060 is an odd machine... I've tried the emulated ethernet cards, CTC to VM's IP stack, and directly to the BUSTECH MAN (ESCON attached LCS device) that I run all of my IP traffic through (3270 sessions and VSE's IP stack)... All with no luck... $...@... I've done that many times. Your best bet will be to define a guest LAN inside VM, tell the rest of your network to route to the guest LAN via the VM stack, give VM an interface on that guest LAN, and use VM's interface on the guest LAN as your router for your Linux guests. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: SLES11
On Feb 27, 2009, at 2:02 PM, Ivan Warren wrote: What does Novell have to gain by restricting which z machine SLES 11 may run on ? Restricting to z/Arch (no 31 bit) was already, IMHO, a bad enough restriction.. But cutting itself from its z800/z900/z890/z990 customer base ? And personally, in those trouble days where a lot of businesses have indefinitely postponed hardware upgrades, I find imposing such arbitrary restriction to be very counter-productive. And although David has outlined the reasons that vendors may drop support for backlevel hardware (or software), there are *other* vendors from whom you can buy support for those things, if it's important that you have commercial support. Feel free to contact me off-list. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: SLES11
On Feb 27, 2009, at 3:14 PM, Aria Bamdad wrote: On Fri, 27 Feb 2009 15:04:55 -0600 Adam Thornton said: And although David has outlined the reasons that vendors may drop support for backlevel hardware (or software), there are *other* vendors from whom you can buy support for those things, if it's important that you have commercial support. Feel free to contact me off-list. Adam I don't think the problem here is support. I think the release notes say that SLES 11 does not even run on non z9/z10 machines. Fair enough. I was reading it as I want to stay current, but I can't afford new hardware. There are vendors who *will* work with you to, say, leave the original vendor support behind, but move to a more modern codebase, on older hardware, is the position I was trying to get across. Which is to say, SLES 11 doesn't run on z800, but almost all of the software that goes into SLES 11 does. I fully understand that it is difficult an expensive to hang on to older processors and keep on supporting them but you don't have to keep them on maintenance agreements either. If the z800 that you do testing on died, you go out and get a new one for less than the cost of a PC. I think you buy expensive PCs. Either that or the used market in z800s is REALLY cold. What does a used z800 cost these days? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: automatic email?
On Feb 24, 2009, at 8:31 AM, Eddie Chen wrote:
Adam,
I am writing FTP and SSH-FTP in PERL to send data out
automatic
as well... I'm interested of take a look at your script... Thanks
Well, wrote doesn't actually mean still have access to it. It was
at a customer site for internal data movement, and I (contractually)
couldn't keep a copy.
But the idea is just construct a new connector with Net::SMTP-new(),
set the from and to parameters appropriately, and then
smtp-data();
while () {
smtp-datasend($_);
}
smtp-dataend();
Adam
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Re: automatic email?
On Feb 23, 2009, at 8:13 PM, John McKown wrote: Many thanks for any ideas. I wrote a very simple MTA based on Net::SMTP in perl to do this. It's straightforward. Net::SMTP makes it very, very easy, assuming you already speak Perl. However: Most Linux distros let you configure an MTA to use a remote host as its smarthost with a couple of clicks. I would not recommend sendmail for anything other than an emetic in this day and age, but certainly Debian's packaging of Exim lets you set up a mailserver pointing to a smarthost trivially, and I believe I remember that it's a single line in postfix as well. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Size of Linux DASD under Z/VM?
On Feb 18, 2009, at 9:34 AM, O'Brien, David W. (NIH/CIT) [C] wrote: Hi, We're new to the Linux world. Currently we have 3390 Mod-3 (2.8G) and Mod-9s (8.4 G) defined to our Linux guests under Z/VM. I'm starting to get complaints that these 'partitions' are too small and do not compare favorably with the dasd sizes available on PC desktops. (Apples and Oranges, in my opinion.) What I'd like to know from the group is - What are your DASD sizes? Are the complaints about partition sizes valid? We have a segment of 1.8TB that could be re-configured. I've suggested 50Gig Mod-54s but have been told that's too small. As with everything else, it depends. If they have applications that have large data storage requirements, then, yes, building LVMs from many small partitions can get annoying fast. In that case you may want to look at FCP-attached SCSI, either presented directly to the guest (which makes management a pain) or given to VM and then shared to the guests as EDEV FBA (which would be my inclination). On the other hand, if they just want that space for their pornography archives, then that's less urgent. And if they just want them because their PC has 2TB, then that's also less urgent. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Size of Linux DASD under Z/VM?
On Feb 18, 2009, at 10:02 AM, Stewart Thomas J wrote: We had an IBM consultant come in and told us to never use EDEV for Linux guests. That's fascinating. What were the reasons given? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Size of Linux DASD under Z/VM?
On Feb 18, 2009, at 12:52 PM, Stewart Thomas J wrote: I also had a link to the following IBM report: http://www.vm.ibm.com/perf/reports/zvm/html/520lxd.html Absent from this study is an evaluation of Diagnose X'250' with emulated FBA DASD. - that was another question IBM could never answer at the time we consulted them, basically how that might speed up the overhead of using an EDEV. Or even what versions of z/VM and Linux would support that. All of them *should* support that. Diag250 doesn't care if it's FBA or ECKD. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Why does one need to mkinitrd/zipl ? (WAS : Broken logical volume group)
On Feb 18, 2009, at 4:30 PM, Ivan Warren wrote: Basically, the requirement for an initrd was generated by 'distributed' systems.. Where you can stick in brand XXX variant ZZZ HBA.. but on IBM System z.. you can't do that ! And even more... Even if you were allowed to, it would have to follow either the Principle of Operations/OEMI channel specs/3990 CU specs or QDIO SCSI.. basically.. you have 3 drivers ! (ok.. FBA, CKD, ECKD, and FCP SCSI.. But that's still 3 since basic CKD isn't even supported!) Or diag250. Sure, doesn't work on the metal. Nevertheless. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Why does one need to mkinitrd/zipl ? (WAS : Broken logical volume group)
On Feb 18, 2009, at 9:36 PM, Ivan Warren wrote: Now about Diag 250.. What's the gain ? a) tons easier for the device driver writers. Take a look at the disk driver in OpenSolaris/z to see why I care. Now.. Simplicity ? Device independence ? well, to support LPAR, you're going to have to deal with CCWs and device geometry anyway. Yeah, but from my (non-Hercules, anyway) perspective, I don't really care about LPAR. The business case for running z/Linux in an LPAR is a very hard one to make. Now, it *is* nice if it works under Hercules because that opens up the development community to an order of magnitude more people. This is the cause of my apparent schizophrenia whereby I'm strongly suggesting that it would be neat if Hercules learned to do the (now fully documented) DIAGs that OpenSolaris requires and exploits. The *only* gain I see is being able to leverage CP I/O Error Recovery Procedures - and logging (which you get on minidisks.. anyway ! even if issuing I/O to Minidisks with SSCH). But, again, it makes writing the device driver a LOT easier. No need to screw around with error recovery in the driver--if it came back bad, you know the IO isn't going to succeed. Of course, Adam (or anyone else), you are welcome (and encouraged) to prove me wrong :P Plus, it provides orthogonality between ECKD and FBA: you don't have to care which you're dealing with. Just pick the right blocksize and away you go. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Migration Off Reiser
On Feb 12, 2009, at 9:26 AM, Jack Woehr wrote: Scully, William P wrote: Does anyone know of a document which describes a well-accepted technique for migrating a server's file systems from one format to another? The classic one is to boot off cd and move stuff. If you are booted to a ramdisk and have one file system (e.g., the real hardddrive root file system) mounted as /old and the new filesystem mounted as /new then in the Bourne shell or bash you can do something like: $ cd /old; tar cf - . | (cd /new; tar xf -) If you're on a Linux box, though, cp -a does a fine job of preserving file permissions and symlinks and so forth and you don't need the tar. In general, you can just mount the new filesystem, and then do cp -ax (stay on the same filesystem) for each one you want to copy. The tricky part is, things like databases need to be quiesced first, so you don't end up with inconsistent files, and you don't get a point in time copy. Hence the recommendation for booting from CD/to single- user mode and doing it that way. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Nawk for SLES10 ???
On Feb 10, 2009, at 1:39 PM, Smith, Ann (ISD, IT) wrote:
We have customers in the process of porting an application from
Solaris
to SLES10 on zseries.
They have a korn shell script which includes the following:
export DOMAIN_NAME=`echo $1 | nawk '{print tolower($1)}'`
Is there a 'nawk' for linux ?
I see that nawk means 'new awk' but I am not familiar with the history
of awk, nawk, gawk.
Is there any compatible command for SLES10?
gawk will probably work OK.
Adam
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Re: Nawk for SLES10 ???
On Feb 10, 2009, at 1:58 PM, Andrej wrote:
2009/2/11 Smith, Ann (ISD, IT) ann.sm...@thehartford.com:
We have customers in the process of porting an application from
Solaris
to SLES10 on zseries.
They have a korn shell script which includes the following:
export DOMAIN_NAME=`echo $1 | nawk '{print tolower($1)}'`
The command is tolower is supported by gawk - if they just modify
the script to say awk instead of nawk it will work just fine.
Or symlink gawk to nawk.
Adam
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Re: Good editor for under the 3270 console interface
On Jan 28, 2009, at 2:03 PM, Tom Duerbusch wrote: However, it is not on the rescue system. Well, then, submit that to the vendor as a requirement. After all, ed is the standard text editor. http://www.gnu.org/fun/jokes/ed.msg.html Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Security question and using scp
On Jan 22, 2009, at 10:49 AM, Jack Woehr wrote: The normal practice is the Unix world is to disallow ssh logins to root ... root users must log in under a user account and su or sudo to root. I'd be leery of saying that is necessarily normal practice. There's a lot of variation in the Unix world. For instance, a lot of machines I've seen don't do this precisely because there are no user accounts. Just system accounts used to run various services. Granted, in those cases, it would probably be better to add a support account everywhere, allow ssh to a support account and force support to sudo, but in this day and age, you really can't count on user accounts anymore, since almost all interaction with systems is via network-exposed services rather than an actual login shell. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Disable makewhatis ?
On Jan 22, 2009, at 11:50 AM, Bhemidhi, Ashwin wrote: We have noticed on our 2 z/VM Linux instances makewhatis is scheduled to run daily and weekly via CRON. Since this program is re- building whatis database, I am guessing its ok turn it off to save some CPU utilizations. Does anyone see a reason to keep makewhatis running? If you want indexed man pages, and you ever add commands, you're going to want it. Does makewhatis rebuild the index from scratch each time? If not, then there's no real harm in leaving it enabled. If it does then you might want to run it by hand when you add commands. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Installing a new Guest from the Starter System Closed
On Jan 22, 2009, at 12:00 PM, Ray Waters wrote: Mark, No I can't. I tried to connect to LINUXEKM (172.16.28.63) with PUTTY and could not connect. I received connection timed out. I could only get the LOGIN screen when I used PUTTY to 172.16.28.62 (NOVSTART). Then use SSH -X r...@172.16.28.63. Is this a routing problem in our network? Probably. Specifically, you probably don't have the default route set on LINUXEKM. So other things on its subnet can get to it, but nothing outside the subnet. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Security question and using scp
On Jan 22, 2009, at 6:38 PM, John Summerfield wrote: Larry Ploetz wrote: Scott Rohling wrote: If I must configure bind, maybe I need a text editor. If I can use a text editor maybe I can edit /etc/sudoers I said that That's what sudoedit (not visudoers!) is for. The point is that I can actually use any editor I like, so long as I get it right. I have actually used at least one of ed, ex and sed, I edit it in my kickstart %post section. Well, yeah, but you should do that by setting your EDITOR environment variable and running visudo (or, I guess, sudoedit), which, despite the name, does respect the value of $EDITOR. It also does all the appropriate locking and atomic updating to ensure that the file is safely editing, which just smacking a text editor onto /etc/sudoers doesn't. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Installing a new Guest from the Starter System
On Jan 21, 2009, at 9:27 AM, Ray Waters wrote: I have the Starter System built (NOVSTART) and can logon to it via putty @ 172.16.28.62. Yesterday I brought up NOVSTART(172.16.28.62) and my new LINUX guest named LINUXEKM (172.16.28.63), ran SLES exec, and was able to connect via ssh -X r...@172.16.28.63mailto:r...@172.16.28.63 from NOVSTART. It was too late in the day to start the configuration via Yast, so I logged out of LINUXEKM then logged out of NOVSTART. Today I tried to start again and brought up NOVSTART, brought up LINUXEKM, ran thru SLES exec as before with no problems. But when I try to connect to the new guest via ssh -X r...@172.16.28.63mailto:r...@172.16.28.63 so I can configure, I get errors today. Yesterday it worked fine. How do I fix this? There is no attack. novstart:~ # ssh -X r...@172.16.28.63 @@@ @WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that the DSA host key has just been changed. The fingerprint for the DSA key sent by the remote host is 18:0d:e9:12:5b:f7:85:30:28:6c:f5:60:ab:b6:05:92. Please contact your system administrator. Add correct host key in /root/.ssh/known_hosts to get rid of this message. Offending key in /root/.ssh/known_hosts:4 DSA host key for 172.16.28.63 has changed and you have requested strict checking. Host key verification failed. novstart:~ # If all you want to do is log in, delete line 4 of /root/.ssh/ known_hosts. But it would probably be good to know WHY the host key changed. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Installing a new Guest from the Starter System
On Jan 21, 2009, at 9:54 AM, Ray Waters wrote: Dave, How do I delete Line 4 in known_hosts? Dave's not here, man. sed -i -e '4d' /root/.ssh/known_hosts would do the trick. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Installing a new Guest from the Starter System
On Jan 21, 2009, at 10:26 AM, Mark Post wrote: On 1/21/2009 at 11:05 AM, Adam Thornton athorn...@sinenomine.net wrote: -snip- sed -i -e '4d' /root/.ssh/known_hosts would do the trick. I don't think that's going to work very well with PuTTY on a Windows desktop. Wasn't he sshing from novstart? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Security question and using scp
On Jan 19, 2009, at 4:05 PM, Rob van der Heij wrote: I have heard that suggestion before, and it appears to come from those who never tried it. I recall that several things get messy when you don't maintain a 1-to-1 mapping of names and uid 0. IIRC the reverse mapping goes through the nscd cache and the result will change color depending on who is looking. The most scary one is seeing yourself as the owner of the file although you never created it. It also breaks stuff that tests for root, and deity knows what. Well, one obvious lesson here is: Don't ever use nscd because it is malicious and evil and sucks and lurks under your chair at the movies and steals your popcorn and gets it all slimy. Oooh, we hates it. We hates it forever. I remember hearing that in some LDAP environments, nscd really *does* help, but it's caused me much more harm than it's ever done good. YMMV. I have never tried giving out multiple uid 0 users, and the idea makes me twitchy. But on the other hand, on many occasions I've had a second uid 0 user, named toor, who had a SANE login shell. I have seen horrifically written software that checks to see if it's being run by root rather than by uid 0. But then, I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. C-beams glittering in the dark near the Tannhauser gate. Um. It's really, really not Friday yet, is it? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: HiperSocket Performance
On Jan 15, 2009, at 8:40 AM, Rakoczy, Dave wrote: I've spent the past few days scouring these archives looking for what others have done. I found a few threads that addressed HiperSocket throughput speeds between zOS and zLinux, but were using FTP as the benchmark utility. I have a window this weekend where I can put in a I/O Gen change for the Maximum Frame Size on the HiperSocket channel define (hopefully I'm on the right track here). So, the question I'm posing is : If you are using HiperSockets to support FDR/Upstream, in your experience where did you find the performance throughput sweet spot? What does FDR/Upstream use as a tape block size? Most of the backup software I'm familiar with uses 32k or 64k chunks, so if you can set your frame size to match, that's probably ideal (assuming that much or most of your Hipersocket traffic *is* backup blocks). If your traffic is dominated by bulk transfers (like backup blocks) rather than interactive traffic, then the larger frame and larger MTU the better (unless you're in a *really* memory starved environment, but if you are this probably isn't going to be your first bottleneck). How long till the next-but-one window? Try something different this weekend, and measure it, would be my advice. Go back to the other one if it's worse, or try a third one, at your next opportunity (it is unlikely, I think, to get enormously faster or slower, presuming you're not doing silly things with MTU or frame size; 576 byte MTUs, for instance, did make sense for interactive traffic in the days of 2400 baud modems, but not so much now). Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: HiperSocket Performance
On Jan 15, 2009, at 9:35 AM, Rakoczy, Dave wrote: zLinux assigns the MTU size according to the IQD CHPID definition. For sake of discussion lets say I set the CHPID to a Max Frame Size of 64K, that would give me an MTU size of 56K according to the Doc. Where can I control the size of the packets I'll send across the interface? In the Tape Blocksize / Record length as alluded to in the Adam's previous note? You can set the MTU manually with, say, ifconfig hsi0 mtu 56000 If the guest is smart enough to set it to a reasonable default based on the frame size that's probably what you want to do. There are sysctl parameters you can tune to choose maximum packet read/ write sizes. See Mark Perry's note. If you are not memory constrained, giving QDIO big buffers will also likely help speed transfer speeds. You can use the tracepath command to determine the maximum MTU size across the whole path (which *should* be a direct-connection to your zOS side, but probably worth verifying). For your application, since you're using 256k tape blocks and 32k max recls as your basic data chunk size, as large as possible is probably the right answer for frame/MTU size...but by all means, *measure performance* to see. We're also making the assumption that the backup application just constructs network transactions in whole- block or at least whole-record sizes. Without knowledge of the wire protocol (which is likely not published) or tcpdumping what it's doing, we don't really know that, and it is certainly not unheard of for applications to try to be clever about network traffic on their own (especially apps whose primary function is moving data across a network quickly, like a backup client). So it may well end up being the case that the app is performing a misguided optimization (for your case--that is, FDR/Upstream may use behavior that is in fact the right behavior for the majority of their customers but is wrong for your situation) that nullifies the effects of moving the frame size up, and you won't see a benefit. We really don't know what relation the tape block and record size has to the wire protocol. I, at least, am just guessing based on how I'd design it: I've never looked that deeply into exactly HOW FDR/Upstream moves its data around. I feel like Bill Bitner: I must say, it depends. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Encryption on a 7060
On Jan 13, 2009, at 12:16 PM, Mark Post wrote: On 1/13/2009 at 1:00 PM, David L. Craig d...@radix.net wrote: I curate a museum which includes a uni-CP Multiprise 3000 -snip- Do current distros still support this platform or will I need something older, and if so, will current encryption software work on the older distro? SLES10 and RHEL5 are 64-bit only. Previous versions are 31-bit or 64-bit. The non-commercial distributions, Debian/390, Slack/390, CentOS are mostly 31-bit. So far as I know, they all include GPG and OpenSSL. Yeah. How acceptable this will be depends, really, on the bandwidth you need encrypted, because doing crypto on a multiprise is pretty slow. Something that we've had success with (depending on your requirements) is to use an outboard x86 box, a private network, and some iptables magic to make it transparent to everything else on the network but do your crypto where it's cheap. There are, of course, organizations that will provide support for non- major distributions, and at least one that really, really likes Debian. Ask me offline. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Porting Cobol to Linux/390
On Jan 9, 2009, at 10:39 AM, David Boyes wrote: Emacs has a nice COBOL editing mode Happy Friday! Open COBOL 1.0 builds fine on Debian Etch on s390. The only dependencies I hadn't already fetched were gmp (GNU Multiprecision math stuff) and libdb4.4 (Berkely db stuff). ## - ## ## Test results. ## ## - ## All 161 tests were successful. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Basic question
On Dec 31, 2008, at 11:28 AM, Smith, Ann (ISD, IT) wrote: I need to update sudoers and don't know proper procedure. Figured I'd ask before I mess it up. I did at least create a backup of /etc/sudoers visudo, usually. Set your EDITOR environment variable (or VISUAL) to the editor you prefer. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Updating 'by-id'
On Dec 10, 2008, at 2:37 PM, Tom Duerbusch wrote: I'm trying to update a test system from using the 'by-id' to by- path method. Adam has an exec that nicely automates the process but I like to see how the more legit way of doing it goes. When I go into the partitioner and update the FSTAB Options, it does update the /etc/fstab file. However, it doesn't update the / etc/zipl.conf file. The /etc/zipl.conf file doesn't get updated with the new 'by-path' method when I do a zipl or mkinitrd either. So, what forces the zipl.conf file to be updated with the new access method? That is, without editing the file directly? It *should* be doing itwell, a file should be created next to the current zipl.conf that does it. Send me the contents of your zipl.conf and I'll take a look. I've had a problem with my regexp not matching all the reasonable parmlines before; this might be the same. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Updating 'by-id'
On Dec 10, 2008, at 4:32 PM, Tom Duerbusch wrote: Hi Adam I wasn't using you script, but rather Yast with mkinitrd and zipl. Oh. Dunno if YaST changes it. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Boot after cloning: SLES10
On Dec 9, 2008, at 3:21 PM, Tom Duerbusch wrote: Adam After reading thru the script, I'm wondering And now I know that I shouldn't be taking the by-id as defaulted and I should be using by-path when I setup the disk in yast What is the difference between using the script and going back into yast, Expert Partitioner Editing each logical device select fstab options and select device path instead of device id? Is either method going to force a Boot, or something else different between the two methods? No, I think that should do just about the same thingalthough I don't know whether YaST will also change your zipl configuration. Or is it that the script can do all disks, which in a large Linux image, can be quite a few and time consuming if using yast? Well, that's pretty much why I wrote it: converting a customer each of whose guests had like twenty disks. Plus, I just don't like yast. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Boot after cloning: SLES10
On Dec 9, 2008, at 3:45 PM, Adam Thornton wrote: Plus, I just don't like yast. I guess I'd better explain lest I ruffle too many feathers. YaST is fine if you're administering one guest. It becomes less useful in an environment where you have lots of penguins, because it is not trivially scriptable. I like CLIs. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Boot after cloning: SLES10
On Dec 8, 2008, at 4:17 PM, Tom Duerbusch wrote: I hit the same problem as others (reference back in November), but I knew that a solution already exists.. OK, so where is it? As in on your website? http://download.sinenomine.net/sane-dasd-update/ Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Oracle, zlinux, and virtualization
On Dec 2, 2008, at 3:46 PM, Pat Carroll wrote: Call me. You don't *look* like Debbie Harry. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: SLES 10 SP 2 - Starter Vswitch
On Nov 25, 2008, at 7:52 AM, Shedlock, George wrote: Gentle Listers, I have the SLES 10 SP2 starter system build and am attempting to create my first guest from the starter system. I start the install process, console log follows: [...snip...] Any suggestions? How very strange. I'm going to guess that the answer is in the MAC address specification. You gave it 101095. Is it perhaps expecting colons between the bytes? Does it want you to specify all six bytes, even though the first three are defined by CP? I don't remember, and I don't have a Layer 2 guest LAN/VSWITCH handy to test on right now. Does anyone remember off-hand? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Some observations regarding admining rhel v. sles on Z
On Nov 24, 2008, at 10:53 AM, Patrick Spinler wrote: +) It automagically pulls the current list of activated DASD channel numbers, and includes those in the ramdisk image it builds for activation at next IPL. No forgetting to edit /etc/modules.conf when extending a machine with more DASD. +) It automagically builds a initrd for every installed kernel in /boot, unless given just a specific kernel by command line options. Not having mandatory options for mkinitrd is sweet. This is also a PITA if you're, for instance, attempting to add diag support to an existing disk. I find its helpfulness pretty irritating as soon as I want to do anything more complicated than adding or removing disks. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Cannot IPL zVM
If z/VM doesn't IPL, you don't waste your time on the Linux/390 list. You call IBM support with a Sev 1 and get your machine breathing again. Once you have z/VM running, *then* you come to the list for help getting your penguins back safe and sound. At least, that's my advice. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: How to virtualize Windows under SLES Linux on zSeries - PJBR
On Nov 11, 2008, at 11:15 AM, David Boyes wrote: On 11/11/08 11:57 AM, Alan Altmark [EMAIL PROTECTED] wrote: I keep waiting for an operating system written in Java with a byte-code-interpreting CPU! Well, there is the p-system OS. Not the IBM P, and not written in Java, but very platform independent, and there were systems manufactured that ran P-code natively (LSI11, etc). A Java-based pcode interpreter does exist, which would get you a pretty decent system fairly quickly. Now, there is a company that makes a system with Java enabled coprocessing facilities that *might* be made to do this with a little thought, but... 8-) http://www.jnode.org/ for the Java OS. Combine with JOP: http://www.jopdesign.com/ (not currently responding, but the Google Cache is there) Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: mail attachment problems to Outlook
On Nov 10, 2008, at 3:43 PM, Bernard Wu wrote: Hi List, From a Linux guest, when I send an email and a file as an attachment to MS Outlook, the attachment is displayed as part of the message body. How can I send it so that Outlook receives it as an attached file and not embedded as part of the message body ? The syntax that I use is : uuencode filename.rpt filename.csv | mail -s Test [EMAIL PROTECTED] TIA Bernie Wu I'd use Perl and MIME::Lite. http://www.akadia.com/services/email_attachments_using_perl.html Has a tutorial. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: OpenSolaris for System z IPL
On Nov 4, 2008, at 2:53 PM, Livio Sousa wrote: The RSU level is not uptodate, do you believe that this can be the problem? Any another idea? This is a z9 or z10? If not, you're going to have the same result. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: SSH on SuSE 10 SP1 problem
On Oct 31, 2008, at 8:40 AM, Stahr, Lea wrote: I cannot start SSH on my cloned SuSE 10 SP1 system under zVM. It does not start at boot time, but gives the error cipher_encrypt: bad plaintext length 337 brksvl01:/usr/bin # ssh-keygen -t rsa -N -q -f ssh_host_rsa_key That's probably supposed to be dash-capital-N-singlequote-singlequote and you're typing a doublequote. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: problems when running mksles9root.sh for SP4
On Oct 28, 2008, at 10:07 AM, Bernard Wu wrote: OK. Looks like something is wrong with the devices. I tried it manually and this is what I got : # mount -o loop,ro SLES-9-SP4-CD-s390x-RC7-CD3.iso sles9xsp4root/sp4/ CD3 mount: could not find any free loop device Maximum of 8 loop devices. Easy to fix. Add options loop max_loop=64 (or up to 255, I think) in /etc/ modules.conf. You will need to rmmod and then modprobe loop again, so it may be simpler just to reboot. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Crytographic processors
On Oct 24, 2008, at 11:51 AM, Mark Post wrote: On 10/23/2008 at 4:01 PM, in message [EMAIL PROTECTED], Bjoern A. Zeeb [EMAIL PROTECTED] wrote: -snip- I remember that the linux support once came as an object file and not in source code. I guess that is still true? No, it is open source. I'm not aware of any hardware support that is otherwise. It was the case for QDIO for a while. Not anymore, though. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: DIRMAINT necessary with RACFVM?
On Oct 13, 2008, at 9:10 AM, Dave Jones wrote: Hi, John... While DIRMAINT does provide some features of an ESM (expiring passwords, password checking, etc.), being a security manager is not its main reason for being. In the z/VM environment, RACF (and other 3rd party vendor products like ACF2) provide the ESM functionality needed, while DIRMAINT concentrates on directory management. I would recommend that any site that is planning on deploying z/VM in anything other than a trivial configuration install and use a directory management product of some sort, like DIRMAINT. Attempting to manage the CP user directory 'by hand' can lead to the sort of directory errors that can be difficult to overcome (overlapping minidisk definitions being a prime example) Plus, DIRMAINT now has capabilities to quickly create and clone user ids, ideal for working with colonies of penguins. Seconded. DIRMAINT is easy to use for basic functionality, and it pays for itself the first time you *don't* overwrite your guests' DASD because you typoed the volume name or you made an arithmetic error. But, as Dave just said: it doesn't have to be DIRMAINT per se. It just needs to be SOMETHING that keeps you from doing stupid things to your directory inadvertently. There are other ways to manage directories, both up and down the price and ease of use scales from DIRMAINT. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: ZFS or LVM2 on Debian?
ZFS is really neat, but because of its license, a kernel-mode ZFS driver is unlikely ever to be included in a Linux distribution. One might make the case that the license was chosen specifically for this reason. FUSE (Filesystems in User Space) makes LVM quite possible on Linux, but it does come at a speed penalty. LVM2 is certainly well-understood and very stable. *I* would do LVM2, myself, at this point. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Early draft of architecture and porting guide for OpenSolaris on Z available
On Oct 1, 2008, at 8:59 AM, John Campbell wrote: I dipt my fingers into the flow... However, one jarring note: Sirius? Neale answered that. I wonder if anyone will bundle it with Hercules? Or is openSolaris unable to run on the bare metal as yet? It will not run on bare metal. Hercules would need to implement DIAGS 24, 64, 210, 250, and 2A8 in order for OpenSolaris to run. Of those, all but 2A8 are documented. I do not know whether IBM plans to document 2A8, although it is available now for z/VM 5.3 as a PTF and will be available for z/VM 5.4 later this year. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Early draft of architecture and porting guide for OpenSolaris on Z available
On Oct 1, 2008, at 11:10 AM, John McKown wrote: Of those, all but 2A8 are documented. I do not know whether IBM plans to document 2A8, although it is available now for z/VM 5.3 as a PTF and will be available for z/VM 5.4 later this year. Adam Wouldn't the use of 2A8 in OpenSolaris implicitly document what it does? Once the source is released, it will be evident on a close reading how it is used in the OpenSolaris environment, yes. However, no one has done QDIO for Hercules either, although the QDIO Linux network drivers have been open-sourced for quite some time now. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Sharing data between z/OS and Linux on z/Series
On Sep 26, 2008, at 4:53 PM, Alan Altmark wrote: No security, no auditability, no accountability. (shudder) Sounds just perfect for today's financial industry. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Sharing data between z/OS and Linux on z/Series
On Sep 26, 2008, at 4:57 PM, Adam Thornton wrote: On Sep 26, 2008, at 4:53 PM, Alan Altmark wrote: No security, no auditability, no accountability. (shudder) Sounds just perfect for today's financial industry. Fun Friday fact! The Dept of the Treasury says that a dollar bill is .0043 inches thick. So if you made a stack of 700 billion of them, you'd have a belt 47,506 miles long, which would wrap around the earth at its equator almost twice! Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
