Upgrade SLES10 SP2
Hi All, We have a server (on VMware, so x86) that is still running on SLES10 SP2. I'm looking for an upgrade path. The official statement is that in order to go to newer releases we first must upgrade to SLES10 SP3, next to SLES10 SP4, next to SLES11 SP4 and then we can move into SLES12 SP5 or SLES15. Obviously all upgrades must be done using an offline upgrade, so boot from the installation media to perform an upgrade. However, the SLES10 DVD's are no longer available. Novell doesn't provide any SLES anymore and Suse only has SLES starting SLES11 SP4. I managed to obtain a copy of SLES10 SP4 but I don't have SLES10 SP3. Would it be possible to perform an upgrade from SLES10 SP2 directly into SLES10 SP4? The official statement is that they didn't test a direct upgrade from SP2 to SP4 but that leaves the question if it's actually impossible or just not advised. Similarly, we do have a few SLES10 SP2 on s390 but I only have the SLES10 SP2 DVD for s390 and no SP4 for s390. So I can't test it myself in s390. Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven * +31 (0)6 22564276 [cid:image001.png@01DAC645.6C732720] [cid:image002.png@01DAC645.6C732720] -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Start DB2 Connect at linux boot
It's quite a long time ago we had DB2 Connect, but the startup of DB2 connect was included in the regular Linux SYSV init startup. I guess the scripts came with DB2 connect. I don't know if current versions are adjusted to SystemD. But in any case, you need to include it in the regular startup. Also SYSV init scripts can be included in SystemD. Regards, Berry. Op 09-04-2024 om 18:34 schreef Tom Huegel: I'm a LINUX novice. I need to have DB2 CONNECT autostart at LINUX boot time. How do I do that? LINUX is SUSE. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: [DKIM] SUSE 11 guest under z16
Hi Victor, We have a couple of SLES11 SP4 and a SLES11 SP3 on z16. In fact, when we moved to our z13 some years ago we did see a SLES10 SP4 fail (migrated to SLES11 SP4) but we still have a few SLES10 SP2 machines that haven't migrated into a newer version yet. Indeed it might be a problem when the customer doesn't want to migrate, but I think you realy should point out the risk to them. Apart from out-of-service (no security updates), any hardware migration might render the machine inoperable. Back with that SLES10 SP4 we had to save/rebuild the server into SLES11 and that took a week to get it running again (luckely we did manage to rescue the data). Your gun, your foot, but I rather have someone else shoot their own foot. Regards, Berry. Op 07-03-2024 om 19:38 schreef Victor Echavarry: Does anyone have a SUSE 11 guest running under z16. We are buying a z16 and we have a couple of SUSE11 running and the customer is not interested to migrate soon. Thanks, Víctor Echavarry System Programmer EVERTEC LLC WARNING: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it immediately. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of EVERTEC, Inc. or its affiliates. Finally, the integrity and security of this message cannot be guaranteed on the Internet, and as such EVERTEC, Inc. and its affiliates accept no liability for any damage caused by any virus transmitted by this email. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Increase dynamically memory to Linux guest
Hi Victor, In the z/VM guest, you need to define STANDBY storage. If you didn't you need to restart the guest. It doesn't depend on the VM and Linux version, it's the way guest storage works. (well, some things have changed recently in z/VM with CONFIGURED, STANDBY and RESERVED storage when dynamic memory was introduced but the general idea remains the same. I don't know for sure if this has had any effect on the internals of Linux guests, I have only played with Dynamic Memory options in a CMS machine.) USER LNXGUEST AUTOONLY 4G 8G COMMAND DEFINE STORAGE 4G STANDBY 4G Here, the guest will have an initial 4G. There is an additional 4G available (MAXSTOR=8G) and this is defined as standby. You can't execute the define command after the machine has booted since the storage will be cleared (example in my CMS user): define storage 512m standby 1G STORAGE = 512M MAX = 2G INC = 2M STANDBY = 1G RESERVED = 0 Storage cleared - system reset. Within the linux guest the state of the memory in 256MB segments, the initial memory is online, the standby memory is offline: grep -r --include="state" "line" /sys/devices/system/memory/ If you have offline segments, you can set them to online. Example: echo online > /sys/devices/system/memory/memory32/state So in order to increase/decrease memory dynamically, you do need to prepare that beforehand. Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven -Original Message- From: Linux on 390 Port On Behalf Of Victor Echavarry Sent: Tuesday, 20 February 2024 21:55 To: LINUX-390@VM.MARIST.EDU Subject: Increase dynamically memory to Linux guest Caution: External email. Do not open attachments or click links, unless this email comes from a known sender and you know the content is safe. Is there a way to add memory to a Linux guest without turn off and turn on the guest. The guest are on SUSE 15 SP5 and the VM is 7.2 Regards, Víctor Echavarry System Programmer EVERTEC LLC WARNING: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it immediately. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of EVERTEC, Inc. or its affiliates. Finally, the integrity and security of this message cannot be guaranteed on the Internet, and as such EVERTEC, Inc. and its affiliates accept no liability for any damage caused by any virus transmitted by this email. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: CRLs on Linux
When I created my own certificates I only had CRL's. Today we use company certificates and they too use CRL's but the signing certificate also has OCSP configured in the certificate. Regardless if it's using CRLs or OCSP, obviously when that server is not available it might be a problem. I think it depends on the application, your application might be configured to validate the certificate. I didn't really check what the options are within Linux, our Linux servers use certificates but the clients are mostly Windows users. My Bluezone can be configured to check for certificate revocation but I have set it to not check the certificate status. I don't know for sure if that was the default or that I had set it this way myself. Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven -Original Message- From: Linux on 390 Port On Behalf Of Phil Smith III Sent: Monday, 8 January 2024 21:33 To: LINUX-390@VM.MARIST.EDU Subject: Re: CRLs on Linux Caution: External email. Do not open attachments or click links, unless this email comes from a known sender and you know the content is safe. I asked this quite a while ago (last June!) and nobody responded. Whether that's because nobody knows or because (I now realize) I might not have asked it very well is unclear, so here I am asking again. Do people use CRLs on Linux? My understanding is that CRLs are mostly a Windows thing, but that some stacks on other platforms do support them. For example, I saw something (not verified) suggesting that if you fetch the CRL lists manually, cURL will validate the CDP info. That's certainly not as integrated as on Windows-which is arguably not a bad thing. IOW, on Windows, "of course" they work; but if they still mostly (I think) don't work on Linux et al., are people even bothering? I suspect not. Plus they add latency, and possible failure. On Windows we see users who renew a certificate and the new one has CDP info in it, and suddenly something doesn't work because the server they're testing it on is internal and can't get to the CRL server. Since they had no expectation that it would even try, this is a surprise and a problem. Our solution was to make it disable-able (by the developer, not the end-user), which seems to sort of miss the point of having CRLs in the first place, but what other choice is there? And yes, that's a separate and quite different question! -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: zip for vm
For who doesn't follow the IBMVM list, Leland was unaware the homerow.net site was down. It's reactivated. Regards, Berry. Op 03-01-2024 om 19:34 schreef Jack Woehr: On 1/3/24 11:22, Alan Altmark wrote: I'm a fan of VMARC, as the files in it can be viewed on a Windows laptop with an app called "vmagui" (dunno if it's available for Linux or Mac). vmagui for windows seems to have gone missing with homerow.net For Linux and MacOS there's https://github.com/rvjansen/vma -- Jack Woehr # Zen is a finger pointing at the moon. IBM Champion 2021-2023 # Some want to see the moon. http://www.softwoehr.com # Some want to discuss the finger. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: [DKIM] zip for vm
There is ZIP for CMS available, but VMARC is more easy. The commercial PKZIP is available for CMS (IIRC it was also available for zOS and maybe VSE). There is info-zip. It includes versions for VMCMS and MVS. (See https://infozip.sourceforge.net/ for information and ftp locations.) Regards, Berry. Op 03-01-2024 om 17:59 schreef Levy, Alan: Is there a program that will allow me to zip up all files on a VM minidisk ? This email, including any attachments, may contain confidential, privileged, or otherwise legally protected information intended solely for the person(s) or entity(ies) to which it is addressed. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of the email or its attachments is prohibited. Please immediately notify the sender of your access to the email or its attachments by replying to the message and delete all copies. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: zip for vm
Hm, I missed that homerow.net is offline. Only some months ago I had visited the site. Luckely I got all of it. The vma at rvjansen is the 12.081 version, but Leland had two newer versions, 20.226 and 22.204, though it looks like the changes are included in this 12.081 version as well. Compiling, both cli and gui version, is quite easy. The hardest part is to make sure the prerequisites are available. Regards, Berry. Op 03-01-2024 om 19:34 schreef Jack Woehr: On 1/3/24 11:22, Alan Altmark wrote: I'm a fan of VMARC, as the files in it can be viewed on a Windows laptop with an app called "vmagui" (dunno if it's available for Linux or Mac). vmagui for windows seems to have gone missing with homerow.net For Linux and MacOS there's https://github.com/rvjansen/vma -- Jack Woehr # Zen is a finger pointing at the moon. IBM Champion 2021-2023 # Some want to see the moon. http://www.softwoehr.com # Some want to discuss the finger. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: email and crypto
Hi Rick, At work I have Outlook, at home I have Thunderbird (yes, Linux only, I use opensuse for a long time already). At work, I have used encrypted mail and some colleagues do as well, but I don't like it all that much. (Actually I was glad it was removed when I installed my new PC, I didn't bother to reactivate it afterwards.) If anything, when the first encrypted mail arrives it takes my PC quite a long time to decide it has to open the smart card for validation, and every time the smart card is used in another application (browser, putty etc) it has to revalidate the smart card. And that with an application that already often hangs, I need to reboot multiple times a week to get my outlook operational again. At home, with thunderbird, I don't recall ever doing something with encrypted mail. Regards, Berry. Op 05-12-2023 om 19:19 schreef Rick Troth: That's cryptoGRAPHY, not to be konfoozed with cryptoCURRENCY. Any of you using Thunderbird? And if so, are you using the (now) built-in PGP support? Last week I noticed a LI post by someone from this circle. He had made a donation to Thunderbird (and we thank you!). So I asked this colleague privately if he had delved into the OpenPGP functionality which has been built-into Thunderbird for like three years already. He had not. He and I will circle back on that, but I then wondered about the rest of the group. So I must ask. I've been a user of, and a fan of, and a promoter of, PGP for many years. There are lots of tools now for security and privacy, and a handful of trust webs supporting them. The PGP "web of trust" is the most important because it is peer-to-peer. Not to slam the PKI model, but it has drawbacks when used at the lowest level. I could discuss, but let's do so in a separate thread. And don't forget that if you're running Linux, you ALREADY HAVE PGP in house, even if you don't know the value. The downside to PGP is its upside. Being peer-to-peer it doesn't scale well in large environments (enterprise, gov/mil, consumer). As a result, it has always been kind of a side-show. But then, it's a standard part of Linux. And now with OpenPGP built-into Thunderbird (and other email clients, from way before TB), it's much much easier to start using it, and then shortly to get into the web of trust. So that's the question: are any of you using PGP via Thunderbird? (Or using PGP at all?) I'd like to hear from you. Maybe converse with myself and our unnamed colleague. It's all about trust. -- R; <>< -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: [DKIM] Re: CGI not executed
Hi Grant, Sigh, the mail ended up in the spam box, both at home and at work. Pretty annoying, it looks like more and more mails end up in the spam box, especially DKIM messages. At home it's annoying as I have to regurarly check my ISP spam box, useless at work as spam is deleted automatically by our mail servers. Anyway, after some searching I found it, the cgi had to be configured in mod_mime-defaults.conf as well. So there are at least three options to check, if any of them fails it will not work. Regards, Berry. Op 25-07-2023 om 15:56 schreef Grant Taylor: On 7/25/23 7:40 AM, Berry van Sleeuwen wrote: Hi All, Hi Last week we migrated a linux guest from SLES12 to SLES15 SP4. We are running Samba and Apache in the server. Apache has a page for the users to change their Samba password. The cgi is executed in the html as: As a long time Apache user, that looks more like what I would describe as Server Side Include (SSI) than CGI. I'm used to CGI having a more complex configuration at the server configuration level. This seems to me like you are leveraging a sub-set of the SSI exec feature to call the CGI. When we migrated the machine the cgi was not executed but I don't understand why not There are no error messages at all. The html page is requested and it does show the content outside of the CGI generated content. Even running Apache with the highest debug level didn't give any pointer to the error. But even more disturbing, at some point it suddenly start working and I don't know why. We did tinker with the machine, because we also had some other PHP related issues in the application, but as far as I know nothing related to the cgi was changed. I tried to replace the program with a new compiled version but that didn't help so I went back to the old program. Is there a chance that any of the other work you did on the first system was related to SSI? Do any SSI directives work? One of the easiest ways to tell if SSI is being processed at all is to look at the page source in the client web browser and see if you see the raw string or not: If you see the raw string client side, then SSI didn't parse ~> replace it. I make extensive use of SSI's #include feature and occasionally make use of SSI' #exec feature. But I don't remember the last time I've used SSI's #cgi feature. As such I'd have to refer to documentation to refresh myself on SSI's #cgi feature to see how it's configured & utilized. Today I have migrated another Samba machine, once again the cgi is not executed. How can I find what the reason is? I'd start by checking to see if the string shows up in the page served tot he client. Try adding something like the following to a page to see if it shows the date when viewed: Finally, I've always found Apache HTTPD's documentation to be quite helpful when chasing minutia. Link - Apache httpd Tutorial: Introduction to Server Side Includes - https://httpd.apache.org/docs/2.4/howto/ssi.html The "The exec Element" section of the following page talks about SSI #exec's cgi support: Link - Apache Module mod_include -> Available Elements -> The exec Element - https://httpd.apache.org/docs/2.4/mod/mod_include.html#elements The following page is more of the CGI configuration that I'm used to. Link - Apache Tutorial: Dynamic Content with CGI - https://httpd.apache.org/docs/2.4/howto/cgi.html I would start by chasing this as an SSI issue more than I would a CGI issue. Make sure that SSI is working. Grant. . . . -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
CGI not executed
Hi All, Last week we migrated a linux guest from SLES12 to SLES15 SP4. We are running Samba and Apache in the server. Apache has a page for the users to change their Samba password. The cgi is executed in the html as: When we migrated the machine the cgi was not executed but I don't understand why not There are no error messages at all. The html page is requested and it does show the content outside of the CGI generated content. Even running Apache with the highest debug level didn't give any pointer to the error. But even more disturbing, at some point it suddenly start working and I don't know why. We did tinker with the machine, because we also had some other PHP related issues in the application, but as far as I know nothing related to the cgi was changed. I tried to replace the program with a new compiled version but that didn't help so I went back to the old program. Today I have migrated another Samba machine, once again the cgi is not executed. How can I find what the reason is? Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven * +31 (0)6 22564276 [cid:image001.png@01D9BF05.1D757940] [cid:image002.png@01D9BF05.1D757940] -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Intermitted TLS error after SLES15 upgrade
The issue is solved, Jeff also has taken a look and explained the process a bit more. In the apache SSL configuration there are two options that need to be disabled, SSLSessionCache and SSLSessionTickets. SSLSessionCachenone # #SSLSessionCache dbm:/var/lib/apache2/ssl_scache # # #SSLSessionCache shmcb:/var/lib/apache2/ssl_scache(512000) # #SSLSessionCacheTimeout 300 SSLSessionTickets off SSLSessionCache is normally enabled, through the mod_socache_shmcb module. I have set SSLSessionCache to off. Even tough there are no PSK ciphers enabled, and I expected PSK would not be in use, it looks like the cache caused the problem. As Jeff explained, probably the initial session is started and creates a cache entry, when a resume/reuse is done it will go through the PSK module to match the cached entry. And then it fails. So by making sure there is no cache the connection doesn't give an error. Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Intermitted TLS error after SLES15 upgrade
Hi Jeff, SLES15 SP4 has openssl 1.1.11. Indeed openssl does list PSK ciphers, but I don't think they are enabled in Apache, at least there are no PSK ciphers listed in the ssl-global SSLCihrsSuite.. Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven -Original Message- From: Linux on 390 Port On Behalf Of Jeffrey Barnard Sent: Wednesday, 12 July 2023 14:42 To: LINUX-390@VM.MARIST.EDU Subject: Re: Intermitted TLS error after SLES15 upgrade Caution: External email. Do not open attachments or click links, unless this email comes from a known sender and you know the content is safe. The error seems to be related to session resume using PSK cipher suites. You might try disabling the PSK cipher suites in your server. There are plenty of others supported by TLS 1.3. What version of OpenSSL are you using? Regards, Jeff -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Intermitted TLS error after SLES15 upgrade
Hi All, We recently migrated a few web servers from SLES12 SP3 into SLES15 SP4. I now have see an intermitted error in FireFox. We have a Xymon webserver running Apache. When I connect to the website all is fine, and every minute the page is refreshed. But very so often (as fast as within a few minutes up to a few hours) I get an "SSL_ERROR_ILLEGAL_PARAMETER_ALERT" error in FireFox. I also see this sometimes at the moment I connect (to another server) for the first time, but when I refresh the page the connection is correct. I only see this in FireFox, Edge doesn't have this problem. I guess Chrome is also fine as it should use the same engine as Edge. In the old server we ran TLSv1.2 but the new version supports TLSv1.3, and that's obviously the preferred version. Based on the FireFox error, I have seen a few discussions for an older version of FireFox/TLS, back when TLSv1.2 was introduced. The solution would be to force FireFox to only allow TLSv1.1 or lower. But when I force FireFox to only accept TLSv1.2 I get the same error. The only 'solution' I have is to remove TLSv1.3 from the Apache configuration. Indeed then, using TLSv1.2, it works fine but we obviously would want to run with TLSv1.3. The apache log shows an error at the time of the failure. But I haven't found any solution when searching for the two error messages. Apparently there might be multiple causes that produce these errors. [ssl:info] [pid 59440] [client xxx.xxx.xxx.xxx] AH01964: Connection to child 2 established (server :443) [ssl:info] [pid 59440] [client xxx.xxx.xxx.xxx] AH02008: SSL library error 1 in handshake (server :443) [ssl:info] [pid 59440] SSL Library Error: error:141FA0FD:SSL routines:tls_psk_do_binder:binder does not verify [ssl:info] [pid 59440] [client xxx.xxx.xxx.xxx] AH01998: Connection closed to child 2 with abortive shutdown (server :443) Do you have any idea how I can solve this? Are there any configuration options in Apache that might have a solution for this behaviour? Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven * +31 (0)6 22564276 [cid:image001.png@01D9B4A0.4318DC10] [cid:image002.png@01D9B4A0.4318DC10] -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Edit grub from 3270 console
Dave, I assume Rick was referring to the Amdahl UTS Unix system. There is a copy of UTS available at https://geronimo370.nl/vm6pext/uts/. I don't know if it actually contains 'ned', I haven't yet tried it in my Hercules VM. Note that this is an UTS system on 3330 DASD so you can't run that on current (z/)VM systems. UTS does run in VM/370. IIRC it is referenced by the VM/370 community. Regards, Berry. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Can zLinux detect when files arrive in the virtual reader?
I don't think Linux itself can detect that. But if you monitor the Linux console through a user running PROP you can see a file has arrived in the RDR because this will give a message in the virtual machine. PROP can then be used to send a command to the Linux machine to process that file. That's what we do, when a file arrives in the RDR we send a command to start a script to process that file. This general script (receive_files) receives the file and then runs an additional script to process the file. A config file determines what to do with the file that has arrived, including where to receive the file and what additional script is to be executed. Here are some examples: - We send a tar file with updated scripts in /root/bin/* to all of our guests. These scripts are maintained in a central guest. - Each day all guests send their logfiles to a Samba machine, the Samba machine stores them in a reporting directory. This way we have all logfiles available from our Windows workstations. - We send our reporting data to a machine that loads the data into a MySQL database. The data is created from the CP MONITOR, packed with vmarc and then send to the Linux guest. We have vmarc available in Linux as well to unpack the data. Regards, Berry. Op 31-08-2022 om 22:46 schreef Donald Russell: Short of having some Linux script querying the virtual reader, is there a way Linux can detect when a file arrives and invoke a script? Sort of like incrond for file system events. The idea is from cms I could send a file to the Linux virtual reader and then Linux would process with vmur commands. How does CMS WAKE-UP do it? I assume when a. We file arrives there’s a. Unsolicited DE (Ready) interrupt that Linux currently ignores. Can I configure something with udev rules? -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
Re: Overcommitting zLinux CPU
I'd say have multiple guests. Let's NOT forget SPOF. (Well, you have a SPOF if it's in only one z/VM LPAR but at least you have multiple guests that can be serviced at different times.) I usually like a number of small guests over a single large guest. Especially when there are multiple guests (with various applications) in z/VM. It will increase the chance a guest is ready to run (waiting for CPU) when the active one is entering a wait state (waiting for disk, network or whatever resource). When you are building a cluster of worker nodes, start with 4 guests with 2 vCPU each, that way you have 8 vCPU's to be scheduled on the 8 threads in z/VM. I expect when you have a cluster of nodes already it wouldn't be hard to add a node when that would make sense. (Remember: performance monitoring, especially the status of guests, is quite important in this case, to see if a new node indeed makes sense.) As for SMT, it will decrease performance for a single thread. So if you move to SMT and keep the guest at 4 vCPU then it will most likely decrease in performance. (If anything, you might also needed to increase the number of vCPU.) But for multiple small guests and/or multi-threaded applications it increases performance. Especially when you have more vCPU's then physical threads. We had an LPAR with 4 IFL, and a lot of guest were in status "CPU Wait" up to 30%. When we moved to 8 SMT enabled threads guests no longer had any CPU Wait status. Overall the performance increased, even for the High CPU guests. (Note: these High CPU guests had 3 vCPU's and even when these guests still had 3 vCPU's they were no longer held back to schedule the other guests because those could be scheduled on another thread.) Regards, Berry. Op 03-08-2020 om 17:43 schreef Mariusz Walczak: Hello, I also thought that enabling SMT will degrade performance of a single threaded process, but I could not find anyone to confirm that. Thank you Christian. Alan: Postgres is not constrained by having only 4 cores. It's running fine with 1 vCPU. The problem is with overall Openshift Cluster CPU count. Now we have 3 Worker Nodes, 4 vCPU each = 12 vCPU. We can schedule max 7 postgres workloads. Our test shows - running 7 identical postgres workloads on Openshift simultaneously, we get to 66% IFL Utilization on CEC (we have 4 IFL). This means there is still some "horsepower" available on the Mainframe, right ? How to properly use zVM and zLinux virtualization technology to increase Openshift Cluster capacity from 12 vCPU to 24 vCPU, without degrading performance. Which of the approaches below is correct ? - to have 6 Worker Nodes (zLinux), 4 vCPU each ? - to have 1 Worker Node with 24 vCPU ? (lets forget about single point of failure for now) I'm trying to understand - does it make any difference which option I take ? At the end its vCPUs fighting for real CPU time on CEC (and for option 2 I avoid OS overhead and OS management) All the best, Mariusz pon., 3 sie 2020 o 08:29 Christian Borntraeger napisał(a): On 02.08.20 06:36, Alan Altmark wrote: A physical core has a certain amount of “horsepower” in it. It can, at top speed do X amount of work. In SMT, you split the core in half, creating two execution contexts (CPUs) instead of just one. The two CPUs share resources on the physical core, but the total horsepower doesn’t increase. In fact, it gets a little smaller in the sense that the core must now spend cycles managing the two CPUs (threads) on it. Some workloads need more threads. Other workloads need faster CPUs. So you choose between SMT (threads) or non-SMT (speed). Knowing which is best means measuring workload response times. To tell some more details: The sum of both SMT threads is usually larger than one single thread. This is because a CPU does have many execution units (floating point, fixed point, etc). Now the CPU can only execute things where all dependencies are resolved.So several units are sitting idle, e.g. when there was a wrong branch prediction until the pipeline has enough things in the out of order window again. With SMT there are now 2 independent dependency tracking streams that can make use of the execution units. So as a rule of thumb: IF you have enough parallel threads and you are bound by overall capacity, enabling SMT is usually a win for throughput. The z15 technical guide says 25% on average over single thread. As an example that could mean instead of 100% you get for example 60% + 65%. What Alan tried to tell is that this of course DOES have an impact on latency. When one single thread only gets lets say 65% the latency is larger. So you balance latency vs throughput. And if you only have one thread on the whole system, then this thread would be faster without SMT. Now as latency might also depend on the questions "do I get ressources at all" I also think that for highly virtualized systems with many guests and overcommitment of CPUs, SMT is usually a win as z/VM
Re: Accounting on zVM
Hi Mariusz,
You can take a look at the ACCOUNT module. (IIRC it's on MAINT 193) This
processes an account input file. You can find information about the
ACCOUNT module in the CMS Command and Utilities guide.
(https://www.ibm.com/support/knowledgecenter/en/SSB27U_6.4.0/com.ibm.zvm.v640.dmsb4/acnt1.htm?view=kc)
You can also write your own procedures. The CP Planning guide describes
the layout of the records.
(https://www.ibm.com/support/knowledgecenter/en/SSB27U_6.4.0/com.ibm.zvm.v640.hcpa5/hcpa5125.htm?view=kc)
We have an exec that processes the account records. We also send the
account records to our performance group, they have their own procedures
to process the data.
Regards, Berry.
Op 25-05-17 om 09:57 schreef Mariusz Walczak:
Hello Community ,
We are running VM 6.4. Do you know any tool or manual for processing
accounting records on zVM? Those files are accumulating on our systems and
I'd like to create a report from it. However, the data from column 29 is
not human readable (""b"}a"") and I'm not sure how to process it.
Thanks!
Mariusz
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Re: Best way to edit Linux files in z/VM 3270
Indeed, sed/awk can be used. Or check out the rpl package, but still that is just a command to replace strings from the command line, just like sed. The only times I need to use the 3270 console is when the network (ssh) is not available. In that case we have the option to shutdown the machine, since it's not available to the customer anyway. Then we can link/mount the disks in our emergency system and use vi (or whatever full-screen editor) from there. Regards, Berry. Op 20-09-16 om 21:10 schreef Harley Linker: The only option that I'm aware of is the 'sed' command. Harley Linker -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Diep, David (OCTO-Contractor) Sent: Tuesday, September 20, 2016 2:02 PM To: LINUX-390@VM.MARIST.EDU Subject: Best way to edit Linux files in z/VM 3270 Hi everyone, I've searched everywhere and I cannot find for editing Linux files while logged in with 3270. Vi will just get me stuck. I looked at 'ed', but I get stuck as well... any recommendations?? Thanks David Diep -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ © 2016 Ensono, LP. All rights reserved. Ensono is a trademark of Ensono, LP. The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: What are your feelings about non-RPM installers for Linux?
Or worse, /usr/local/ibm. In our system /usr/local is just what is says, local. This means the directory is moved during migration into the new server. Or rather, the installation version in our golden image isn't moved into an upgraded server. Regards, Berry. Op 23-01-15 om 16:22 schreef Robert J Brenneman: Also - you get major bonus points for making your RPM relocatable so I don't have to mix your stuff in with the OS install in somewhere silly like /usr/lpp. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: autofs doesn't umount
Hi Mark, Yes, I am, at least for autofs. Today I have upgraded autofs with the latest patch. But the issue remained. I have to test a bit further but I have found a way to get it functioning correctly. Currently I have /etc/sysconfig/autofs with a timeout of 20 seconds. The entries through auto.master have a timeout of 30 seconds. Now the mounted image gets unmounted. I have to test what the real issue is here. Either /etc/sysconfig/autofs is leading, or the entry in /etc/auto.master. The tests so far were inconclusive. I have tested with the same timeout and with different timeouts. And it even looked like the behaviour had changed after I upgraded autofs. Regards, Berry. Op 19-11-14 om 22:06 schreef Mark Post: Are you current on maintenance for SP3? Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: REXX mod
Hi Ron, You can set both CPU and model. CPU serial can be set with a command or within the directory entry for the guest. If you also want to set the CPU model you need to modify the storage address within the VMDBK that contains the CPU model for a guest. But some products query the model in a different way so it might not always work. We use this to run a zOS or VM guest on different model hardware (z9 or z890 in DR on z10). Regards, Berry. Op 26-06-13 21:41, Ron Wells schreef: Do not know if this is place to ask Is there a way to tell VM that I am going to run a image(Linux or zos) under a different machine/serial/model # than what I am really on?? looking at doing it for a DR possibility where it is a PAIN to get auth codes.. -- Email Disclaimer This E-mail contains confidential information belonging to the sender, which may be legally privileged information. This information is intended only for the use of the individual or entity addressed above. If you are not the intended recipient, or an employee or agent responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution, or the taking of any action in reliance on the contents of the E-mail or attached files is strictly prohibited. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: CCL OSA device not activated
Hi Vincent,
I think an upgrade for this level is not quite an option or at least not
at this moment. Even more so, we are upgrading from SLES9 to SLES11 just
to get out of possible problems with the EC12 in the future. If
anything, for the short term, we would go back to the old (and
unsupported) SLES9 as that level does activate the current OSA.
I guess we need to get support involved.
Thanks, Berry.
Op 26-10-12 17:20, Iuliano, Vincent schreef:
I can't really tell from the messages listed below what is going on but we
had an issue where there was an MCL driver push on our CEC that needed our
SLES11 kernels to be upgraded in order for it to work again. You may need to
upgrade your kernels if it is the same issue. Please check your CEC MCLs
pertaining to your OSAs and the version of SLES you are running. Thank you.
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of van
Sleeuwen, Berry
Sent: Friday, October 26, 2012 10:49 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: CCL OSA device not activated
No messages other than udevd-event[554]: error opening
ATTR{/sys/devices/qeth/0.0.efac/portname} for writing: No such file or directory in
the boot.msg. This is the case for both portname and portno.
/etc/udev/rules.d/51-qeth-0.0.efac.rules:
# Configure qeth device at 0.0.efac/0.0.efad/0.0.efae ACTION==add, SUBSYSTEM==drivers,
KERNEL==qeth, IMPORT{program}=collect 0.0.efac %k 0.0.efac 0.0.efad 0.0.efae qeth
ACTION==add, SUBSYSTEM==ccw, KERNEL==0.0.efac, IMPORT{program}=collect
0.0.efac %k 0.0.efac 0.0.efad 0.0.efae qeth
ACTION==add, SUBSYSTEM==ccw, KERNEL==0.0.efad, IMPORT{program}=collect
0.0.efac %k 0.0.efac 0.0.efad 0.0.efae qeth
ACTION==add, SUBSYSTEM==ccw, KERNEL==0.0.efae, IMPORT{program}=collect
0.0.efac %k 0.0.efac 0.0.efad 0.0.efae qeth
TEST==[ccwgroup/0.0.efac], GOTO=qeth-0.0.efac-end
ACTION==add, SUBSYSTEM==ccw, ENV{COLLECT_0.0.efac}==0,
ATTR{[drivers/ccwgroup:qeth]group}=0.0.efac,0.0.efad,0.0.efae
ACTION==add, SUBSYSTEM==drivers, KERNEL==qeth, ENV{COLLECT_0.0.efac}==0,
ATTR{[drivers/ccwgroup:qeth]group}=0.0.efac,0.0.efad,0.0.efae
LABEL=qeth-0.0.efac-end
ACTION==add, SUBSYSTEM==ccwgroup, KERNEL==0.0.efac,
ATTR{portname}=OSNdevEFAC
ACTION==add, SUBSYSTEM==ccwgroup, KERNEL==0.0.efac, ATTR{portno}=0
ACTION==add, SUBSYSTEM==ccwgroup, KERNEL==0.0.efac, ATTR{online}=1
It looks like the part between TEST and LABEL are skipped. The devices are
online but the actions beyond the label give an error in the boot.msg. But the eth0 devices are
started correctly.
Regards, Berry.
-Original Message-
From: Iuliano, Vincent [mailto:viuli...@iso.com]
Sent: vrijdag 26 oktober 2012 14:52
To: Linux on 390 Port; van Sleeuwen, Berry
Subject: RE: CCL OSA device not activated
What are the errors messages that you are receiving in the syslog
during IPL?
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
van Sleeuwen, Berry
Sent: Friday, October 26, 2012 6:01 AM
To: LINUX-390@VM.MARIST.EDU
Subject: CCL OSA device not activated
Hello All,
We are migrating a CCL guest from SLES9 to SLES11 SP1. The guest is
available but the CCL is not activated. Looking at it it looks like
udev can't activate the devices needed for the CCL engine. The guest
has the three OSA devices (EFAC, EFAD, EFAE) attached, just as it had
in the SLES9 CCL guest.
/var/log/boot.msg:
udevd-event[554]: error opening
ATTR{/sys/devices/qeth/0.0.efac/portname} for writing: No such file or
directory
Devices (EFAC, EFAD, EFAE) are online but the ccwgroup is offline.
cat /sys/bus/ccw/devices/0.0.efac/online
1
cat /sys/bus/ccwgroup/devices/0.0.efac/online
0
When I compare this with a running SLES9 CCL machine the ccwgroup
should be online, so I guess this is the problem I need to fix.
Any ideas how to configure these OSA devices in SLES11?
Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen,
Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven
* +31 (0)6 22564276
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Re: Formatting large EAV dasd
Did you dynamically add the device? We have seen a similar error when new DASD, 3390-9 in our case, is linked in SLES11 SP1. Only after a reboot (logoff/logon) of the guest we were able to format the DASD. Regards, Berry. Op 24-04-12 15:58, Roger Evans schreef: Is there anyway to format dasd devices that aren't minidisks (because they're too large)? I am trying to use disks that looks like this: faktark:~ # lsdasd Bus-ID Status Name Device Type BlkSz Size Blocks == ... 0.0.0500 active dasdi 94:32 ECKD 4096 169036MB 43273440 0.0.0501 active dasdj 94:36 ECKD 4096 169036MB 43273440 0.0.0502 active dasdk 94:40 ECKD 4096 169036MB 43273440 dasdfmt fails with: dasdfmt: Writing the bootstrap IPL2 failed, only wrote -1 bytes. and fdasd then can't read the volume. I've tried dparted but can't seem to find a way to write a volume lable. Mvh./Best Regards Roger Evans, Autodata Norge A/S http://www.autodata.no +47 93 25 92 36 -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Error while DASDFMT
Hi Mark, It's IBM. And like I stated, a few weeks ago I have build a system where I could format. So i'm caught by suprise that it doens't work this time. Regards, Berry. Op 23-01-12 16:20, Mark Post schreef: On 1/23/2012 at 07:53 AM, van Sleeuwen, Berryberry.vansleeu...@atos.net wrote: I started with an ICKDSF format for the DASD volume. Next the linuxguest has got a minidisk 1-10016. The subsequent dasdfmt failed. The DASD is available in Linux, it has been set online, 0216 is in /proc/dasd/devices as /dev/dasdr, it is included in the /etc/udev/rules.d/ directory. I tried a CMS format before dasdfmt but that ends with the same result. I DDR'ed the first 10 cylinders from another DASD, still the same result during dasdmt. I tried to format through Yast - hardware - dasd, no difference. Any ideas what could be wrong and how to solve it? Berry, What brand of storage array do you have? If it's EMC, do you have the latest maintenance (especially the kernel) installed? Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Required packages on a zLinux server running Oracle vs Put everything on
Installing Oracle doesn't require X. The only reason Oracle guys want X is because they've learned how to do it on Windows and don't (want to) know the silent install method. Even more so, a silent install can be scripted, can be automated by the linux sysadmin, can make *their* install jobs obsolete. We've installed a SLES10/Oracle 10 in 1G, without X using a silent install. And we run 2 DB's in that same 1G even while oracle states that you realy need 1G or more for every DB instance. No swapping involved, or at least no runtime swapping. Linux does have some memory offloaded into swap but that's rarely touched in runtime. A second, more or less the same, Oracle guest has 1G for 1 DB, it's a full production system and it swaps even less. It all boils down to knowing what the requirements are, both for installing and runtime. Don't believe the (red)books or recommendations and scripting from suppliers. These just confirms that they've done it in this setup, not the minimum requirements. The only way is measuring or trail-and-error. Monitor your numbers, increase or decrease when needed. Like you state, the workload determines the requirements. The problem is: up is easy, down is a nightmare. The same is true for software install and remove. Both technical (how to remove software safely?) and for the more is better rule-of-thumb (it's not and we can prove it!). Regards, Berry. Op 16-12-11 21:47, Damian Gallagher schreef: There is a difference between the installation requirements and the runtime, as is usual. Installation requires x , but runtime doesn't - and the docs state 4GB as that's the amount needed to get a full install. If you're a min install, you might get away with 2GB without swapping to hard, but there we go. Once you've done the install, of course X isn't needed, but that will be for patching perhaps :-) Once you're into runtime, then YYMV - it's your workload that generates the resource usage. Cheers Damian -Original Message- From: van Sleeuwen, Berry [mailto:berry.vansleeu...@atos.net] Sent: 16 December 2011 17:09 To: LINUX-390@vm.marist.edu Subject: Re: Required packages on a zLinux server running Oracle vs Put everything on I don't know if that would help too. Our Oracle specialist ran a script from Oracle to determine requirements and demanded that the requirements would be met otherwise he couldn't install Oracle. This is an SLES11 with Oracle 11. So now we have a guest with 4G memory, 2G /tmp and a lot of packages installed, including a full X-windows. Installing Oracle we had proved through measuring the system that he needed only 200M /tmp space and less than 1G memory. X is never being used. So even the Oracle scripts and books do not reflect the actual minimal requirements but still consider a stand-alone server running X. BTW, the server is now installed according to Oracle recommendations, running at over 55MIPS it is now a top5 machine in CPU consumption and 100% in Q3. No, the machine is not in use yet so this is the IDLE load. Our SLES10 with Oracle 10 is a guest with a minimal installation, meaning the absolute minimum required to run a Linux guest and added a few packages such as sudo, sysstat etc. On top of that we've added: cpp, gcc ,gcc-c++ , glibc-devel ,libaio-devel ,libmudflap, libstdc++-devel, java-1_5_0-ibm-devel, expat-32bit, fontconfig-32bit ,freetype2-32bit, glibc-devel-32bit, openmotif, xorg-x11-libs-32bit, zlib-32bit. So this is the actual minimum requirement. Anything more is not required to install or run an Oracle. Also the guest runs 2 oracle databases within 1G. Idle load at about 6MIPS and almost never in Q3. Conclusion, don't trust the requirements from Oracle, they are wrong. On the other hand, if you want to install using X then you indeed need a lot more than this. Regards, Berry. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Damian Gallagher Sent: vrijdag 16 december 2011 15:47 To: LINUX-390@VM.MARIST.EDU Subject: Re: Required packages on a zLinux server running Oracle vs Put everything on Oh, we can do better than that :-) On the assumption that you have a support contract, all you need is in this article: Note 1086769.1 -Ensure you have prerequisite rpms to install Oracle Database and AS10g(midtier) on IBM: Linux on System z (s390x) This provides an rpm which consists only of prereqs, thus ensuring you have the packages needed for the appropriate product. Run both sets, and you're good for E-Business Suite also. It won't necessarily tell you what you have that's unnecessary, though. Cheers Damian -Original Message- From: Mauro Souza [mailto:thoriu...@gmail.com] Sent: 16 December 2011 10:56 To: LINUX-390@vm.marist.edu Subject: Re: Required packages on a zLinux server running Oracle vs Put everything on There's a RedBook (http://www.redbooks.ibm.com/abstracts/sg247634.html) for installing Oracle on System Z. It
Re: Undeleting files
Hi Tom, Try google, there are some hits on recovering data on ext3. It might not be easy so it depends on how bad you need the deleted data. I've found for instance http://carlo17.home.xs4all.nl/howto/undelete_ext3.html, quite a long story but apparently it can be done. Regards, Berry. Op 14-12-11 23:00, Tom Duerbusch schreef: Where I know the answer to this question, generally. I wonder if this can be done in a very defined sitituation. I have disk /dev/dasdb1, formatted with ext3. There is one directory on it. That directory had about 40 files on it of a few megabytes each. This is SLES 10 SP 2. I connected to the Linux image with WINSCP. I bought up that directory in one pane and in the other pane, I bought up my thumb drive. I wanted to copy the files to my thumb drive. Instead of copying the files, I thought syncing the directories would be easier. Well, I synced an empty directory to the Linux directory. All files are gone. In most cases, recovering deleted files is very dependant on if any of the space or directory structure has been reused. In this case, the space hasn't been reused, but I don't know if the deletion of 40 files, one at a time, would reuse the directory blocks or just mark them available. Before I go too far in this Am I just out of luck? Or is there a decent chance I can recover these files? Thanks Tom Duerbusch THD Consulting -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: RSH RPM
We use the RDR for that. We send a file to the linux guest. On the console it is noted that a rdr file has arrived. The console automation (PROP) triggers a script that processes RDR files. The script determines what the name and origin for the file is and based on a config file it can run various scripts depending on the filename/origin it has to process. And no cron is needed for this. Regards, Berry. Op 21-09-11 18:26, Agblad Tore schreef: No Problem Alan :) Well, not enough, we really would like to be able to signal from z/VM that: 'go and get some new data from that cmsfile I have told you the name of before' without having to use cron. That way, we can start things without having a number of crons using cpu. And without delay. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Samba security again
Hi Mark, That was our first idea too but we were not able to get the correct setup for our goal. How should we setup the share config in a way that we get the correct write authorization? When we do not specify anything in the share a file gets username:defaultgroup. So for instance berry:users. But we'd want the files to get a permission based on the directory it is created in. So directory linux should get something like user:linux. When using forcegroup we do get the group right but the parameter in the share is then used for all files in all (sub)directories. So share MFPL would then get group MFPL instead of vmvse or linux. When using inherit group or inherit permission it still is not the way we exepected it. Even more so, inherit group looks like to be inherit user; the file is then created as root:users (root is owner for the directory, users is my default group). Regards, Berry. Op 27-07-11 17:25, Mark Post schreef: On 7/27/2011 at 10:12 AM, van Sleeuwen, Berryberry.vansleeu...@atos.net wrote: Would it be possible at all to assign permissions based on the directory instead of the share? Since Samba doesn't override the native Linux permissions, you should be able to do this with file system ACLs. Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: VM to zLinux Remote Execution
We send a command to the guest console. We have a PROP user that monitors the consoles and is also able to send commands to the guest. Usually the commands are scripts but also regular linux commands can be executed. Downside is that the console doesn't always handle command output correctly so if you want command output to be processed afterwards you should trap the output into a file and send the file back to VM (using vmur). For instance, when a RDR file arrives at the guest, PROP triggers a script that will receive the RDR file. Or when we want to shutdown the guest we execute the shutdown command on the console. Some commands, for instance ls, will run inside a script to trap the output and that is sent back to the requesting user on VM. It's zero cost, except for the programming of some exec's in VM and scripts in the guests. Both logging and security is maintained at various levels. Regards, Berry. Op 22-07-11 19:31, Tom Duerbusch schreef: I'm trying to remotely execute a command with CMS as the client and SLES 11 SP 1 as the server. All documentation I've found so far, shows how to do it from Linux to VM. Apparently the problem is, TCPIP for VM only has the unsecured REXEC client and SLES 11 only has a secured sshd. I've searched the VM download page for a ssh client. I've done some Linux searches for how to dumb down sshd (i.e. to allow unsecured transfers). Of course, there might be program products available, but unless they would be zero cost products, it's not going to happen in the short term. Thanks for any help Tom Duerbusch THD Consulting (Still on z/VM 5.2) -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Open Xchange
Hi Mark, I did find that post and indeed it worries me that it looks like a silent forum. We would like to setup a exchange-like server with more or less the same function. We are open for suggestions if there is a better solution for this on zLinux. We have loaded mod_proxy_ajp according to the install instructions, but perhaps I should verify it's correct function. Thanks, Berry. Op 16-06-11 19:18, Mark Post schreef: On 6/16/2011 at 07:17 AM, van Sleeuwen, Berry berry.vansleeu...@atosorigin.com wrote: When we start the webinterface the errorlog in apache shows: File does not exist: /srv/www/htdocs/ajax, . The installguide does show the ajax-gui package to be installed on all frontend servers. But in SLES I can't find any reference to ajax so I don't know what to install in this case as well as if it would really be required for OX to function properly. From the documentation it appears that the magic happens in the mod_proxy_ajp configuration. Section 1.10.2 Configuring Services of the Installation and Administration guide. Google turned up this link http://forum.open-xchange.com/archive/index.php/t-3458.html Based on that and other forum entries for open-xchange, it doesn't look like anyone who works for the company monitors the forums. Probably not a good sign. Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Open Xchange
I agree. The primary goal is to have mailboxes, especially shared mailboxes, that users can connect to. At least in this stage calendars, contacts and such are not required since that is running within our regular (windows) exchange server environment. But as the project manager stated, he wanted exchange on zlinux. Perhaps just a word, exchange instead of mailserver just because he is used to the word exchange (just like OS=windows, sigh). OTOH, it would be nice if we could provide full exchange functionality. So if we can make an exchange replacement happen it would be nice. But if that proves to be too much at one time (or not possible at all) just a mailserver for shared mailboxes would be good for now too. Any thoughts on how to proceed here? Is a regular mailserver (postfix?) capable of providing shared mailboxes? Regards, Berry. Op 16-06-11 21:48, Richard Troth schreef: Berry -- I cannot help you get OX running, but I would suggest that if you run out of options ... consider a mixed approach. YOU MAY be well served by a combination of standard servers for email, contacts, calendar, and files. Many services are already provided by stock packages (programs you possibly already installed). This approach has pros and cons. Just a thought. -- R; Rick Troth Velocity Software http://www.velocitysoftware.com/ On Thu, Jun 16, 2011 at 15:15, Berry van Sleeuwen berry.vansleeu...@xs4all.nl wrote: Hi Mark, I did find that post and indeed it worries me that it looks like a silent forum. We would like to setup a exchange-like server with more or less the same function. We are open for suggestions if there is a better solution for this on zLinux. We have loaded mod_proxy_ajp according to the install instructions, but perhaps I should verify it's correct function. Thanks, Berry. Op 16-06-11 19:18, Mark Post schreef: On 6/16/2011 at 07:17 AM, van Sleeuwen, Berry berry.vansleeu...@atosorigin.comwrote: When we start the webinterface the errorlog in apache shows: File does not exist: /srv/www/htdocs/ajax, . The installguide does show the ajax-gui package to be installed on all frontend servers. But in SLES I can't find any reference to ajax so I don't know what to install in this case as well as if it would really be required for OX to function properly. From the documentation it appears that the magic happens in the mod_proxy_ajp configuration. Section 1.10.2 Configuring Services of the Installation and Administration guide. Google turned up this link http://forum.open-xchange.com/archive/index.php/t-3458.html Based on that and other forum entries for open-xchange, it doesn't look like anyone who works for the company monitors the forums. Probably not a good sign. Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: How many virtual servers per IFL?
How about savings in power consumption. If configured correctly a virtual server won't cost you anything. Well, hardly anything. Running a dedicated server you must size the server for it's peak load. In VM you run multiple servers and if their peak load doesn't overlap you don't need to size for the total peak load. So 10 '1 IFL' servers can run in perhaps only a 2 IFL LPAR. It also means that you can add servers without the immediate need for additional hardware. Note that the utilization is both CPU and storage. You should monitor both CPU and storage (page) loads. Those two will determine the numbers. IMHO, size an LPAR for peak load of a large, high CPU guest, such as a busy DWH machine. Then look at small low utilized servers you can add without the need for additional hardware. For instance some small apache or samba servers etc. Actual numbers is very hard. 2 to 50 perhaps. But we do have a dozen guests that could be 100 per IFL since they are paged out 95% of the time. Obviously these are not running large production loads. Regards, Berry. Op 06-12-10 18:07, John Cousins schreef: Here we go again! Without success, we've been trying to get the IT department here to adopt z/Linux since 2003! Our zVM licence has been recently cancelled, and I have just had a request from our Enterprise Architects for some costing for z/Linux as they need to compare server virtualisation costs with VMware! One problem of trying to get a cost per virtual server was always trying to estimate how many servers an IFL will support. We had a 13 SuSe servers defined in a z800 IFL but as they were hardly used we couldn't measure a thing! So are there any rules of thumb out there on how many production virtual servers would run on a Z10 IFL? Obviously it will depend on server utilisation, guess that will need to be estimated as well? Another question is where do the bulk of the savings come from? From my investigations over the years other success stories suggest most savings come from software licensing, e.g Oracle, Tivoli etc. but also from networking infra-structure by the use of virtual switches. Are there any other areas that provide benefits? Any ideas or constructive suggestions would be gratefully received! Best regards John John Cousins Senior IT Officer Central Support Services ICT Division Bristol City Council Romney House Romney Avenue PO Box 1380 Bristol BS7 9TB Tel : 0117 922 4705 Fax: 0117 922 3983 e-mail: john.cous...@bristol.gov.uk __ 'Do it online' with our growing range of online services - http://www.bristol.gov.uk/services Sign-up for our email bulletin giving news, have-your-say and event information at: http://www.bristol.gov.uk/newsdirect View webcasts of Council meetings at http://www.bristol.gov.uk/webcast Bristol is the UK's first Cycling City. Visit www.betterbybike.info to join thousands of others getting around by bike. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Question to smsgiucv
Hi Florian, Please don't use polling. You wakeup your machine even when nothing is happening. If you want to receive files you can use the linux console. When a file is send to a guest a message on the virtual console appears. Trap this message (use SCIF and PROP to monitor your linux consoles, like OPERATOR or similar) and have PROP trigger a script to receive the file. That's how we do it. We send files from VM and linuxguests to linuxguests, either directly or through ftp to remote VM LPARs (we don't have RSCS over there). When a RDR file arrives our PROP user issues a command to the linuxguest to run a script that will receive and process the file. Regards, Berry Op 01-12-10 21:48, Florian Bilek schreef: Dear all, I am looking for a possibility using the Virtual Reader under z/VM in z/LINUX. The idea is to process files received from a z/OS via RSCS. Off course I could regullarily start VMUR to poll the RDR but couldn't that be done much smarter with an event starting VMUR ? I thought smsgiucv could do that but I am not sure how.Does there exist a sample? Thank you very much. -- Best regards Florian -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: HCPGIR450W and HCPGIR453W after editing user direct
Are you even running DIRMAINT? I guess not, since you use a directory on MAINT. But if you are then it could be your directory is now replaced with an old (probably incorrect) version. Actually you didn't need to IPL VM. Once you put the directory online it is available. So delete the IPL step from the instruction. Or change the instruction, do not IPL VM, IPL the guest (either xautolog or logon). Just guessing here, I'd expect that you do not have all required DASD attached to SYSTEM after the IPL. Look at the guest minidisk config in the DIRECT USER. All volumes should be available. For instance: MDISK 100 3390 VMVOL1 MR Disk 100 is located on volume VMVOL1. So VMVOL1 should be attached to system. QUERY DASD VMVOL1. If not, ATTACH SYSTEM. Perhaps the 100 disk is available but the 101 is missing. Just check all MDISK statements. Look at the free and offline DASD volumes. QUERY DASD FREE and QUERY DASD OFFLINE. Any volume that is needed in this VM should be attached to system instead of free. Hope this helps. Regards, Berry. Op 04-11-10 23:25, koray schreef: Hi Pieter, i logged in as MAINT user and run x direct user c command. then edited the file, saved, run the command diskmap user, run the command x user diskmap and searched for overlaps. And there was no overlap. Then executed directxa user and re-ipled Z/VM. This is the procedure which our Z/VM guy wrote to me and im the Linux guy.So i dont know if it was a source directory or parts of a segmented directory on DIRMAINT disks. Our Z/VM has left the company some time ago, and we dont have one yet. Due to ipl didnt work us, we executed a POR (power on reset) and saw a hardware message about FICON Channel Error, Lost of Light or something. So we thought maybe it's a hardware failure. But i dont know how to be sure about that. There is also one weird thing, we re-configured all guests memory settings, but some guests still run properly some doesnt ipl. Regards On 05.11.2010 00:14, Harder, Pieter wrote: Can you describe in more detail what you exactly did? I hope you are talking about manually changing a monolithic source directory and not parts of a segmented directory on DIRMAINT disks? If the latter that won't work and there is a fair chance you clobbered your directory. In that case I hope you have a recent monlithic source directory to recover or you could be in for some trouble. After you made the changes I assume you also manually ran DIRECTXA against it? If not your changes are not active and you can simply logoff/logon you guest to get back to the old config. best regards, Pieter Harder Van: Linux on 390 Port [linux-...@vm.marist.edu] namens koray [nixst...@gmail.com] Verzonden: donderdag 4 november 2010 20:31 Aan: LINUX-390@VM.MARIST.EDU Onderwerp: HCPGIR450W and HCPGIR453W after editing user direct Hello all, We have 14 Sles Guests running on Z/VM 5.4. We edited the user direct file and changed the memory settings of Linux guests.For example; linux001 - 2048M 4096M linux002 - 2048M 4096M has changed to linux001 - 3072M 6144M linux002 - 1024M 2048M Now, i cant ipl my guest's. When i try to ipl from minidisk 100, linux 001 says: HCPGIR453W CP Entered, program interrupt loop. linux002 says: HCPGIR450W CP entered, disabled wait PSW 00020001 8000 001536B0 It seems disk mapping are broken but i'm totally sure that i only changed Memory settings, not touched minidisk settings. Need your help please. Regards -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ Brabant Water N.V. Postbus 1068 5200 BC 's-Hertogenbosch http://www.brabantwater.nl Handelsregister: 16005077 -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: mon_fsstatd - filesystem monitor records
Hi scott, We do see records for every mounted filesystem. Both on SLES10 SP2 and SLES11 SP1. Indeed, have option APPLMON for the guest and start mon_fsstatd. Actually we have APPLDATA, mon_fsstatd and mon_procd running. We run two machines on the CP MONITOR running custom plumbing. The first only writes selected recordtypes to disk (such as Dom. 10 Rec. 2). The second CMS machine monitors the filesystem records and creates incidents based on certain thresholds on filesystem usage. We don't run the IBM MONWRITE. First of all we'd like to write only those records we are interested in. And second, MONWRITE writes the file into fixed 4096 records instead of one record for each monitor record. Do you know for sure your plumbing does indeed get the records the correct way? Have you tried the MONVIEW package from the IBM VM packages? Regards, Berry. Op 21-10-10 17:16, Scott Rohling schreef: I am trying to use the mon_fsstatd driver (s390-tools) to generate monitor records with Linux fileystem stats. The guest has OPTION APPLMON and ability to write monitor records. Records 'do' seem to be generated - but it seems like it's only for a single filesystem (/dev/dasdd1, which happens to be the last listed if you do a df -h). According to the device drivers manual -- a record should be generated for each physical mounted filesystem. I'm only seeing one. As an aside - I am viewing the records on z/VM by linking to MONWRITE 191 and using some creative PIPEing to translate the ascii fields to ebcdic, etc... Basically getting all records with 'LNXAPPL' in ascii and parsing them. So pretty sure I'm not missing records that are being written for APPLDATA ... Has anyone else used this driver and gotten different/better results? (I'm running this on RHEL54 under z/VM 5.4) Scott Rohling -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: mon_fsstatd - filesystem monitor records
The most easiest: PIPE STARMON | monwrite file a, that way you will write one record to disk for each record in CP MONITOR. In this case you won't have to figure out how to parse the records or to process them afterwards with MONVIEW. Just connect a test CMS machine to MONITOR if you can't use MONWRITE for this. Regards, Berry. Op 21-10-10 21:04, Scott Rohling schreef: Hi Berry - Thanks very much for your reply - you're right - I was being too simplistic in plumbing the MONWRITE data. I used MONVIEW and quickly did an XLATE A2E against the output - I can now see dasda1, etc in the output. So I obviously need to parse the MONWRITE data correctly. I'll poke around the MONVIEW stuff to figure it out. Thanks again! Scott Rohling On Thu, Oct 21, 2010 at 12:28 PM, Berry van Sleeuwen berry.vansleeu...@xs4all.nl wrote: Hi scott, We do see records for every mounted filesystem. Both on SLES10 SP2 and SLES11 SP1. Indeed, have option APPLMON for the guest and start mon_fsstatd. Actually we have APPLDATA, mon_fsstatd and mon_procd running. We run two machines on the CP MONITOR running custom plumbing. The first only writes selected recordtypes to disk (such as Dom. 10 Rec. 2). The second CMS machine monitors the filesystem records and creates incidents based on certain thresholds on filesystem usage. We don't run the IBM MONWRITE. First of all we'd like to write only those records we are interested in. And second, MONWRITE writes the file into fixed 4096 records instead of one record for each monitor record. Do you know for sure your plumbing does indeed get the records the correct way? Have you tried the MONVIEW package from the IBM VM packages? Regards, Berry. Op 21-10-10 17:16, Scott Rohling schreef: I am trying to use the mon_fsstatd driver (s390-tools) to generate monitor records with Linux fileystem stats. The guest has OPTION APPLMON and ability to write monitor records. Records 'do' seem to be generated - but it seems like it's only for a single filesystem (/dev/dasdd1, which happens to be the last listed if you do a df -h). According to the device drivers manual -- a record should be generated for each physical mounted filesystem. I'm only seeing one. As an aside - I am viewing the records on z/VM by linking to MONWRITE 191 and using some creative PIPEing to translate the ascii fields to ebcdic, etc... Basically getting all records with 'LNXAPPL' in ascii and parsing them. So pretty sure I'm not missing records that are being written for APPLDATA ... Has anyone else used this driver and gotten different/better results? (I'm running this on RHEL54 under z/VM 5.4) Scott Rohling -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: PowerCenter on z
Hello John, Ah, yes. That answers my first question, so it can run on z. But looking at PowerCenter I can only find what PC can do. I can't find what the requirements would be to run it. I have seen some remarks on running on RedHat and Suse (probably on intel) but it doesn't state what versions for SLES, java or other software it would need. The problem here is that our customer can't migrate either the hardware or zOS without problems with their current version on Power. They have asked us if we can run it on z but right now I can't give them the answer on specific versions. So I was looking for a list of PC versions and software requirements. Regards, Berry. Op 05-10-10 15:52, McKown, John schreef: Is this what you're talking about? http://www.informatica.com/solutions/mainframe/Pages/mainframe_solutions.aspx quote PowerCenter for z/Linux Have you chosen z/Linux to lower software licensing and IT operations costs through server consolidation? Or are you hoping to lower MIPS-based costs and possibly defer upgrading your z/OS environment by transferring some workloads from z/OS to z/Linux? Whatever your z/Linux strategy may be, PowerCenter for z/Linux was created to support you. CPU-intensive data transformations run at full speed in z/Linux, and PowerCenter on z/Linux provides complete access to the entire range of sources and targets supported by PowerExchange, no matter where data resides. Data located in z/OS can be accessed via Hipersockets (the mainframe's virtualized network technology) so it never leaves the safety and security of the mainframe environment. /quote -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-691-6183 cell john.mck...@healthmarkets.com * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM -Original Message- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of van Sleeuwen, Berry Sent: Tuesday, October 05, 2010 8:45 AM To: LINUX-390@VM.MARIST.EDU Subject: PowerCenter on z Hello Listers, We have been looking on the net but we can't get an answer. Is PowerCenter available for z/Linux? And if so, what are the requirements for PowerCenter? Met vriendelijke groet/With kind regards, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven ( +31 (0)6 22564276 -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
How to convince others. Was: Re: mono keep guest active - ban the blips.
That's a good way to make things clear. Especially to management. Here is a challenge. We are in the process of enrolling new machines into production. Part of that is that they want to force us to install a general monitoring tool (nagios and local scripting). We noticed quite a dramatic increase in resource usage. CPU at least doubles and the guests all go to Q3. Upon our comments on wasting resources, poorer storage handling etc. management responds so then we have to buy storage. So we now have to write a bussinesscase why we NOT should increase storage to handle the load. What are convincing arguments? After a few years of discussing this over and over again I'm out of ideas. Thanks, Berry. Op 17-08-10 23:35, Barton Robinson schreef: The reason these blips are so virtual unfriendly - think about poor old z/vm storage management. We need to steal some pages for some real work going on. Do we steal it from the server doing real transactions? or from the one that is blipping? oops, we can't tell the difference. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: How to convince others. Was: Re: mono keep guest active - ban the blips.
Nagios is in use at the server side. Each client (our servers) has the nagios client, with scipting instead of the nagios plugins, and sec. Sec is in use for monitoring the /var/log/messages, it makes the server go into Q3 and stay there and has quite some CPU load as well. Usefull, I don't know, perhaps but why brun so many cycles and keep busy all the time? I mean, how many message can you write and consequently read? At least when we monitor the linux console with PROP we won't have that much overhead. The other part is scripting scheduled in cron to monitor the filesystem and processes. They tend to run at the same time for all servers and have some CPU load as well. I did notice the mon_fsstat and such, that only have minor impact on the linuxsystem and they even write records every minute. So in this case, usefull yes, but at a cost. Berry. Op 19-08-10 22:04, David Kreuter schreef: Are Nagios and local scripts waking up needlessly? or are they doing legitimate work even if it is wasteful? David Kreuter Original Message Subject: How to convince others. Was: Re: mono keep guest active - ban the blips. From: Berry van Sleeuwen berry.vansleeu...@xs4all.nl Date: Thu, August 19, 2010 3:49 pm To: LINUX-390@VM.MARIST.EDU That's a good way to make things clear. Especially to management. Here is a challenge. We are in the process of enrolling new machines into production. Part of that is that they want to force us to install a general monitoring tool (nagios and local scripting). We noticed quite a dramatic increase in resource usage. CPU at least doubles and the guests all go to Q3. Upon our comments on wasting resources, poorer storage handling etc. management responds so then we have to buy storage. So we now have to write a bussinesscase why we NOT should increase storage to handle the load. What are convincing arguments? After a few years of discussing this over and over again I'm out of ideas. Thanks, Berry. Op 17-08-10 23:35, Barton Robinson schreef: The reason these blips are so virtual unfriendly - think about poor old z/vm storage management. We need to steal some pages for some real work going on. Do we steal it from the server doing real transactions? or from the one that is blipping? oops, we can't tell the difference. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: How to convince others. Was: Re: mono keep guest active - ban the blips.
True, it isn't. It's the replacement of an operator. The main issue here is that it needs to raise tickets and get reporting stats. For instance, raise a ticket at 100% CPU (and indeed, our ABS limithard machines do raise tickets when they are running their batch..sigh.) or when a filesystem is at 100%. The reporting is for instance on CPU and filesystem usage. But indeed it can't provide insight in the performance of a guest, other than detect thresholds. And it doesn't have to either, the monitoring department can look at top, vmstat or sar to detect that kind of problems should they need to (yeah right, then they know all about the entire environment). Still, as for a case, this is a good point. We need to be able to address performance related monitoring and nagios can't do that. Or at least not within the scope of an entire LPAR. Thanks, Berry. Op 19-08-10 22:12, Rich Smrcina schreef: A 'general monitoring tool' is not a performance monitor. In an environment where efficient resource utilization is critical to the business, a means to monitor: - the performance of the virtual machine environment - the virtual machines running in that environment - potentially systems outboard from the environment Is paramount to a successful implementation on System z. Additionally you may want to perform chargeback and accounting based on internal procedures that may be in place. Nagios doesn't provide the timing resolution or access to z/VM monitoring resources, so it loses. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Shared root and shutdown
I have been playing with a RO setup. Directories that need to be RW are separate minidisks (/var and /tmp) or they are linked to a directory on the RW disk (/root, /home, /srv). /var is a separate RW disk, even the regular RW systems also have /var on it's own (mini)disk. I didn't test it with lvm just yet but I guess that would not need some temporary bind mount. Or at least we don't see errors on /var/lock/lvm with our full RW systems so I expect the /var disk is mounted before lvm needs it. I don't think in this case it matters if /var is mounted on an RW or an RO rootdisk. Berry. Op 10-08-10 16:03, Leland Lucius schreef: It was /var/lock/lvm that needed to be bind mounted to somewhere else temporarily. Leland -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Shared root and shutdown
Hm, I didn't think of that when I tried it. IIRC the redbook did mention to replace the /etc/mtab on the / disk with a sym-link but didn't mention to also replace it on the RW disk that is bind mounted. So that's keeping my /etc from umount. Also, I did replace it once and found the boot.rootfsck to remove the mtab (or the link to /proc/mounts) and recreate a new mtab. Yes, that was before the / went RO. After that a link can't be removed obviously. Berry. Op 10-08-10 12:26, Richard Troth schreef: To get /etc unmounted, you need to make /etc/mtab a sym-link to something outside of that filesystem. Sym-linking /proc/mounts as /etc/mtab is the most common way to do this. 'umount' needs to be able to do its work without the deadlock of mtab being open when it makes the system call. So good practice is to replace /etc/mtab as a stand alone file with a sym-link to /proc/mounts. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Attach OSA express3 to a guest
Hi Mark, Thank you, after reboot the network has been started correctly. To make you smile, now our client noted the java 1.5 and tomcat5 but he realy wants java1.6. and tomcat6. So yes, i'm pulling SLES11 SP1 at this moment. Regards, Berry. Op 30-07-10 20:59, Mark Post schreef: It looks like that part of the support didn't make it into SP2, only SP3 and later. Since you're running an out of service system anyway, you could just make this update: Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Attach OSA express3 to a guest
Hi Mark, At the IBM devworks (http://www.ibm.com/developerworks/linux/linux390/development_recommended.html) I found that four-port OSA is supported with a patch against kernel 2.6.25. We are running in SLES10 SP2 at level 2.6.16. So does our system support this option? Regards, Berry. Op 27-07-10 19:36, Mark Post schreef: On 7/27/2010 at 05:55 AM, van Sleeuwen, Berry berry.vansleeu...@atosorigin.com wrote: But how can we configure the linux guest to use port 1? Either in VM or in the linuxguest. Where can I find this in the documentation? On SLES 10 (SP2 and higher): yast - Network Devices - Network Card - Edit - Advanced - S/390 and set Port Number to 1. Mark Post -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Attach OSA express3 to a guest
Indeed, my (old) Device driver book doesn't contain the options for this. The newest version (dated 2010) does contain what I was searching for. Thanks, Berry. Op 27-07-10 14:11, Quay, Jonathan (IHG) schreef: Look on DeveloperWorks at the Devices Drivers documentation. There is a large chapter on qeth. From: Linux on 390 Port on behalf of van Sleeuwen, Berry Sent: Tue 7/27/2010 5:55 AM To: LINUX-390@VM.MARIST.EDU Subject: Attach OSA express3 to a guest Hi listers, Our linux guests connect to the vswitch. Our vswitch has been configured to use an OSA device on one of the ports. We have a vswitch that connects to port 0 and two that connect to port 1. We now have a guest that must be configured with a dedicated OSA, ie attach the OSA devices to the guest, using port 1. But how can we configure the linux guest to use port 1? Either in VM or in the linuxguest. Where can I find this in the documentation? Met vriendelijke groet/With kind regards, Berry van Sleeuwen Flight Forum 3000 5657 EW Eindhoven ( +31 (0)6 22564276 Atos Origin http://www.atosorigin.com/ MO CF SC Mainframe Services -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Files on disk
Hello Edmund, Sparse files. OK. Then the next question, how can I store a 26G file in a machine that isn't that large? And to add to this, why does the filesystem backup really dump 26G into our TSM server? So it looks like the data is going somewhere. Berry. Op 21-07-10 15:41, Edmund R. MacKenty schreef: Because they are sparse files. Linux only allocates blocks for a file that have actually been written, so if a process creates a file and seeks a couple of gigabytes into it before the first write, the file size is reported as over 2GB, but it really only uses the blocks actually written after that point. Use du(1) to report the actual space used by those files. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Files on disk
Thank you all for your replies. It's clear to me, we were dumping zero's. Regards, Berry. -- 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 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Guest network connection error
Indeed, the actual linux guest is moved to the other VM. Another thing that was noticed by the network guys, the OAT doesn't show the registered IP addresses from this LPAR anymore. This is for all guests, including the ones that are still running in this LPAR. If a guest logs off it cannot register on the OSA. This has been verified by restarting a test machine, it too can't be reached from outside VM anymore. When we moved the guests to the second VM the IP addresses got registered on the OSA in the second LPAR and we have got full connectivity back. (note, same OSA) Regards, Berry. -- 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: JAVA JDK 1.6
I guess Florian wanted to reply to the list. Regards, Berry. Florian Bilek schreef: Dear all, Even I couldn't agree more with the statements about sticking to the available software versions, this does not reflect reality. As software is mostly developed outside of the organisations they want to use it, nobody is taking care of certain maintenace levels. When it is available, when it is fits to the requirements then the management wants to have it. And when you as responsible for the zSeries tell them, well we can not do it because we have SLES 10 and SLES 11 requires a new mainframe, I guess you can imagine what the reaction of the management will be: Burry this bloddy thing an replace it immediately by more modern hardware. In my opinon the zSeries has to be as flexible as possible in order to have a chance to survive against the other platforms. It is not that you simply buy a new zSeries every year. So I think there is a real need to support JAVA 1.6 also on SLES 10 and I really don't see why this should not be possible. Best regards, Florian On Sat, Aug 8, 2009 at 1:01 AM, Berry van Sleeuwen berry.vansleeu...@xs4all.nl mailto:berry.vansleeu...@xs4all.nl wrote: I wish we could manage the programmers :-). Some do program with a version in mind. Especially when new functions are incorporated into a new software product. Or when some product requires (or thinks it requires) a certain version. As much as we would like to we can't always control the programmers or software vendors. I do agree that a programmer should code for the available version but it's not always that simple. Berry. Mark Post schreef: The programmers may prefer... That's a management issue, and should be addressed by them. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu mailto:lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- Best regards Florian Bilek -- 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: JAVA JDK 1.6
I wish we could manage the programmers :-). Some do program with a version in mind. Especially when new functions are incorporated into a new software product. Or when some product requires (or thinks it requires) a certain version. As much as we would like to we can't always control the programmers or software vendors. I do agree that a programmer should code for the available version but it's not always that simple. Berry. Mark Post schreef: The programmers may prefer... That's a management issue, and should be addressed by them. -- 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: Administration on RedHat
I didn't know the system-config commands so I'll have a look at them. As for YUM, as I understand it it is more like an updater so I didn't look at it thus far since I want to install software (from my software repository) rather than update installed packages. Thank you all for your tips. Regards, Berry. Amelia Nilsson schreef: As far as I know there's nothing like YaST in RedHat, but you have the system-config-* commands that you might want to check out. They're not covering everything that YaST does but it's a little bit on the way. About GUI for package management I don't know of any at all, but yum is very easy to use even if it's a bit different from YaST. Best regards, Amelia -- 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: Mingetty version on SLES10
Hello Bruce, When searching for an answer it was described with mingetty. But then I found that that option wasn't available until version 1.0.*. IIRC I did try some options, including agetty but all failed, probably due to my error I guess. Anyway, you all gave me some hints to try other options so I'll give them a try. OpenSuse 11.0 also has 1.0.7. So indeed I do expect it to be present in SLES11. But that wouldn't help me now because we are still at SLES10. Thanks, Berry. -- 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: Kernel bug in SLES 9
Hello Mark, Thanks for your comments. This workaround would be an option. We'll have to look into that. I did find that some work has been done when I was looking into the aio.c. And also that some parts have been discussed for some time now. The aio.c (and aio.h) have been changed to some extent in later kernel versions but I can't say if those changes would have any effect on our problem. Just for my good understanding (and for some input tomorrow at our next meeting). Suppose we would be able to open a service request, what would be the chance a kernel bug can be fixed through a service request? Based on the discussions on the aio.c my guess would be that a kernel fix would be difficult to get implemented, especially when a quick result is expected. Am I correct when I expect that the service would be close to an advice like changing specific parameters and/or install a newer kernel or patch? (Note that this is in no way to you personally, I expect kernel changes to be part of the kernel development team so any change in that part is outside the scope of any company that provides support. The problem is how to convince the upper level to view it the same way. As Alan did suggest, input for a MER.) Do you know by any chance what button to push for AIO in Oracle? I know that we did cover that when the server was installed 4 years ago but I didn't do that part myself. IIRC it was asynch_IO=yes or some parameter like that. Correct? Is there any guess as to what performance penalty this disable would give us? The server does hit it's limits quite often so I expect this question to be the next one. Regards, Berry. -- 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: Recover a root disk
Hello Florian, I wish that was the case, then it would be easy to investigate. Or at least easier. Like I mentioned, it is not totally corrupted, a part of the filesystem still exists. So it is not formatted. /boot for instance still exists, the machine can boot but once it tries to read the inittab it finds most of /etc has gone. Regards, Berry. Florian Bilek schreef: Hello Berry, Is the server running on z/VM? If so, couldn't it be that somebody had overlayed the rootdisk with another MDISK and formatted that new one, leaving the old one totally corrupted? Just guessing. Regards, Florian On Thu, Nov 27, 2008 at 2:10 PM, van Sleeuwen, Berry [EMAIL PROTECTED] wrote: Hello list, Last night we had to recover the root disk of one of our SLES9 machines. For some unknown reason part of the root disk has disappeared. In the end we have restored the disk from our backups but we still have no idea why this had happend. It looks like someone has removed selected files or directories. Some directories are stil available, such as /bin or /boot but other have been partially or entirly removed. /etc contains some 40 files, var/log is gone, /var/spool still exists. Would it be possible to recover the data from the disk? Are there any tools available that can analyze and/or recover files? For instance the /var/log has vanished so if we could recover that perhaps it would give us some clue as to what happend. Do you have any thoughts as to why a part of a filesystem can just disappear? With kind regards, Berry van Sleeuwen. -- 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 -- Best regards Florian Bilek -- 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 -- 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: Recover a root disk
Hello Waldo, We have mainframe DASD, 3390 model 3. Configured as minidisk in zVM. We have mirrored DASD but since the source (production) disk has been corrupted so is the mirror. Well, I hope it wasn't an attack because that would mean it's an inside job. This guest is not connected to the outside world. Regards, Berry. D Waldo Anderson schreef: I think it would depend on what the physical medium is. If it's on a mainframe DASD volume, it should be shadowed and DFH should be able to recover it. If it's on a HD, some of the 'low level' formatting programs should be able to look at the physical drive to recover it. On IDE/ATAPI drives, an erasure usually only deletes the directory and the blocks are untouched. Hope this helps, but it sounds like you may have been 'attacked'.successfully. D Waldo Anderson -- 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: SUSE 10 Installation Help
Hello Russel, I don't know if you are connecting from a windows (putty) or linux PC (ssh or openssh) but yesterday I installed a system and connected from a linux machine. SSH from linux apparently sends the userid with it. So I had to issue ssh -l root 192.168.200.2 instead of just ssh 192.168.200.2 to force the root login. Once I used the -l option I was granted the root login and the password I supplied in the install was accepted. Regards, Berry. Jones, Russell schreef: I am 99% sure of what I set the password to in the first part of the installation. I was able to logon via ssh for the first part of the install, but the password is not being accepted now. If I can't get the password to work, is my only option to start the install over from the beginning? Russell Jones ANPAC System Programmer -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rich Smrcina Sent: Monday, November 24, 2008 1:48 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: SUSE 10 Installation Help It will be the temporary password that you entered during the first part of the install. Make sure you have the proper case for the password. Jones, Russell wrote: My boss came home from a tech conference with an evaluation copy of SUSE 10. I am trying to install it and I seem to be stuck. I have completed the install and IPLed the new system. There is a message on the console to logon and run the command /usr/lib/YaST2/startup/YaST2.ssh. I can connect via ssh, but I do not know the root password to logon. Apparently it is not the same as the temp ssh password that I setup on the installation system. Is there a default root password? Thanks for your help, Russell Jones ANPAC System Programmer -- Rich Smrcina VM Assist, Inc. Phone: 414-491-6001 Ans Service: 360-715-2467 http://www.linkedin.com/in/richsmrcina Catch the WAVV! http://www.wavv.org WAVV 2009 - Orlando, FL - May 15-19, 2009 -- 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 -- 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 -- 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
Hello Florian, IMO it is the other way around. Microsoft doesn't build it's software for zseries therefore it will not run on zseries. Perhaps IBM would sell zseries machines to run windows, just like they do for linux, but then Microsoft would have to build the software for this CPU. And also other vendors would have to build their software for z too. I too don't consider x86 emulation to meet business needs. It would be interesting to see if it will run from a specialist point of view. But for production loads I want the software to run with as little overhead as possible. Emulating an x86, or emulating any type of CPU for that matter, to run mission critical software will just be too expensive. Therefore, you'd be better off moving the workload to a native zseries application than to run an emulated processor to do the same thing. There are indeed a lot of applications that are out there for x86. But there is a choice. If you want a database you can select Access. But then you'd also select the hardware and OS it must run on. You could also select DB2 or MySQL and in that case you can decide upon the platform you can run it on, depending on the capabilities of the platform. Most applications you can buy for windows do have alternatives, either for x86 or for zseries. And now that we have linux on zseries a lot more applications have become available for zseries. If only there were more vendors that would offer (build/compile/support) their products for zseries too. We offer our clients an option with linux on z. If they want a database, we support MySQL, Postgresql, DB2 and oracle. A webserver will be Apache. A fileserver, Samba or NFS. Just what they can run on linux, we are willing to offer. O, btw, it will run on z (notice we don't say mainframe ;-)). But if a client insists on running IIS or MS-Access, too bad, we can not run that on our linux on z as well as you cannot run it on a x86 linux. As for cost, yes, a mainframe will cost you more than a PC, but can you run as much workload on a PC? You would need more PC's to run the same workload and that would increase the cost to the same level or even above that. The problem is that you can't compare a single PC with a single mainframe and then say that the mainframe is more expensive. It is just like comparing a car with a truck. I wouldn't buy a car and then expect it to move 40tons of freight. So why then expect a PC to run the workload of a mainframe? Unfortunatly, most decision makers only know a PC and compare the price for a PC they buy at whatever discountstore with the price they must pay for a zseries machine. They ignore the fact that a mainframe can run much, much more workloads and is much more scalable than a PC. It is just a matter of choice and what choice you begin with. If you select windows then you have selected x86 by default and also have selected the range of products you can run on that platform. If you select an application, you are limited by the options that this application will bring you. But if you select the hardware that will support your workload first then you are free to select the OS and applications that will run on the type of hardware. Regards, Berry. Florian Bilek schreef: Hello Alan, I would like to come back on your statement: snip It's certainly interesting from an academic perspective, but it doesn't meet the needs of business. /snip I would really like to understand IBM's view on this issue. Is it from a business point of view that Windows or Intel (x86) is not considered as a serious environment for running mission critical applications?? Unfortunately there are hundred thousands of applications out there that exist only on Windows and unfortunately not on Linux. And even when they would exist on Linux it does not mean that they would run on z/Series. So since long time I wonder myself what is the reason to simply ignore the fact that in a lot of organisations consider the costs of z/Series compared to WinTel Servers as terrible high and then this platform does not run Windows applications. (I do not want to discuss if this is true or not but this is what I hear from my management). I have all the time problems with my management to justify the costs. If x86 programs would run naively also on z/Series I would never had such problems any more. So I would see indeed a urgent need in solving this issue. Best Regards, Florian On Tue, Nov 11, 2008 at 5:57 PM, Alan Altmark [EMAIL PROTECTED]wrote: On Tuesday, 11/11/2008 at 11:24 EST, jose raul baron [EMAIL PROTECTED] wrote: Certainly I agree the proper thing would be to migrate the workload instead of keeping the same philosophy but... the customer is always right. (cough) As many customers who have talked to me can attest, no, they are not always right. :-) They can have good intentions and excellent ideas, but the technology is sometimes simply not there to support those ideas. And, occasionally,
Re: WHat are people doing
Hi Terry, When we started our Linux on Z one of the first machines that has been moved to this platform is a datawarehouse database. This database holds some 500G (IIRC) and runs 2 entire IFL's. It could run even more if we had more IFL power available. As for the reason why anyone would stay on for instance solaris. In some cases it can be just because we've done this already. Or perhaps because of some tools that are in use. And in some cases there can be a problem with a software product that is not (yet) supported on Z or on the specific Linux release. I don't think it's related to the capabilities of Linux on Z as such. But sometimes tuning can be a problem because tuning in a shared environment can mean you'd have to find new settings and knobs. At the very least I'd move a large database to the mainframe to take advantage of the IO capabilities of the mainframe. But make sure you know and understand tuning before moving large databases (just to avoid a disapointed customer due to performance issues). But in the end it all has to do with cost. So make sure you get the numbers. And make sure you get ALL numbers, not only CPU or DASD but also the costs (or rather savings) in floorspace and power. Remember that you are not necessarily be better off with just one Linux machine on an LPAR. The added bonus is that you can run multiple machines, either on VM or multiple LPAR's, with shared resources (CPU, storage, floorspace, power etc). Some people tend to look only at one server for their calculations and ignore the fact that you can (and will) be sharing resources. So present the big picture to your management. As for my LPAR's, we run one or two large machines to account for the IFL's and storage of the LPAR. And a number of small little used machines that will hitch a ride on the spare capacity. And that will be your cost saver. After all, where can you find a test server that cost you almost nothing? I hope this helps you to convince your management to move to Linux on Z. Kind regards, Berry. Martin, Terry R. (CMS/CTR) (CTR) schreef: Hi Are you seeing a fair number of shops running Oracle on Linux on Z and if so have the results been favorable? The question comes about because My management is hearing that when people move servers over to the Z under Linux they are mostly moving servers that have very little usage already and that databases like Oracle are staying put on the other platforms such as Solaris in my case, giving them the impression that the z/Linux cannot handle this. I know there are some situations where this may be true but I do not believe on a whole this is necessarily true. What do you think! Thanks, Terry -- 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 -- 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
