Re: Current Red Hat version available
We are using RHEL 4 (of some sort) on z/OS. I am only peripherally involved with it. I believe that Sam here (that is doing a lot of that work) has found that MQ V6 has some problems (maybe in our environment). If you wish, I can put you in touch with him for some more detailed data. Kevin -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Mark Post Sent: Tuesday, July 17, 2007 7:48 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Current Red Hat version available On Tue, Jul 17, 2007 at 4:55 PM, in message [EMAIL PROTECTED] .GOV, Chaplin, James [EMAIL PROTECTED] wrote: -snip- Does anyone have experiewnce with Red Hat Enterprise verison 5 with MQ 6.0 Given the relatively small number of people running RHEL on the mainframe, and the newness of RHEL5, I suspect you're going to be taking some arrows for other people with MQ Series. Please let us know how it goes for you, so that others can benefit. Mark Post -- 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: RedHat ES 4 using VDISK
On Wed, 18 Jul 2007, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. Not exactly. Just for clarification, CMS FORMAT does two things: low-level format (akin to 'dasdfmt') and high-level format (akin to 'mke2fs'). If the disk is FBA or VDSK then CMS FORMAT silently skips the low-level formatting operation. In general, FBA and VDSK should be usable immediately without CMS FORMAT (and without 'dasdfmt'). You can simply 'mkswap' or 'mke2fs' and use the whole disk. If you need partitioning, the story changes. And if you use 'dasdfmt -l cdl' the waters get even murkier w/r/t using the whole disk. But the low-level half of the CMS FORMAT operation is essential prior to using CKD disks, unless one runs 'dasdfmt' in Linux. *** summary *** CKD or ECKD -- require low-level formatting FBA, VDSK, SAN -- do not require low-level formatting CMS FORMAT -- performs low-level and high-level formatting 'mkswap' -- performs high-level formatting for swap space and can be run even if the disk was CMS FORMATted 'mke2fs' -- performs high-level formatting for a filesystem and can be run even if the disk was CMS FORMATted Partitioning schemes may throw-off the latter two. -- R; -- 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: RedHat ES 4 using VDISK
On Jul 18, 2007, at 12:04 AM, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. You can use a CMS-formatted disk if you want, as long as you don't mind overwriting anything CMS did. I'm going with the it's not in your zipl parmline theory. Me, I'd use SWAPGEN, but then, I *would* say that, wouldn't I? Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: RedHat ES 4 using VDISK
The following is the contents of our /etc/zipl.conf. [EMAIL PROTECTED] network-scripts]# cat /etc/zipl.conf [defaultboot] default=linux target=/boot/ [linux] image=/boot/vmlinuz-2.6.9-55.EL ramdisk=/boot/initrd-2.6.9-55.EL.img parameters=root=LABEL=/ According to (http://www.linuxvm.com/vdskdoit.html) We're supposed to add the disk to the Linux Boot Parameter file, 'i.e. disk=302' in our case. I added it as, parameters=root=LABEL=/ disk=302 and it did not make a difference. When I do a listing of /dev/dasd* there does not show a corresponding device to run a 'mkswap' or 'mke2fs' command against. The 302 disk is CMS FORMAT'ted. John -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rick Troth Sent: Wednesday, July 18, 2007 5:37 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: RedHat ES 4 using VDISK On Wed, 18 Jul 2007, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. Not exactly. Just for clarification, CMS FORMAT does two things: low-level format (akin to 'dasdfmt') and high-level format (akin to 'mke2fs'). If the disk is FBA or VDSK then CMS FORMAT silently skips the low-level formatting operation. In general, FBA and VDSK should be usable immediately without CMS FORMAT (and without 'dasdfmt'). You can simply 'mkswap' or 'mke2fs' and use the whole disk. If you need partitioning, the story changes. And if you use 'dasdfmt -l cdl' the waters get even murkier w/r/t using the whole disk. But the low-level half of the CMS FORMAT operation is essential prior to using CKD disks, unless one runs 'dasdfmt' in Linux. *** summary *** CKD or ECKD -- require low-level formatting FBA, VDSK, SAN -- do not require low-level formatting CMS FORMAT -- performs low-level and high-level formatting 'mkswap' -- performs high-level formatting for swap space and can be run even if the disk was CMS FORMATted 'mke2fs' -- performs high-level formatting for a filesystem and can be run even if the disk was CMS FORMATted Partitioning schemes may throw-off the latter two. -- R; -- 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
Betr.: Re: RedHat ES 4 using VDISK
I may be all wrong, but shouldn't that be dasd=302? Best regards, Pieter Harder [EMAIL PROTECTED] tel +31-73-6837133 / +31-6-47272537 John White [EMAIL PROTECTED] 07/18/07 5:00 The following is the contents of our /etc/zipl.conf. [EMAIL PROTECTED] network-scripts]# cat /etc/zipl.conf [defaultboot] default=linux target=/boot/ [linux] image=/boot/vmlinuz-2.6.9-55.EL ramdisk=/boot/initrd-2.6.9-55.EL.img parameters=root=LABEL=/ According to (http://www.linuxvm.com/vdskdoit.html) We're supposed to add the disk to the Linux Boot Parameter file, 'i.e. disk=302' in our case. I added it as, parameters=root=LABEL=/ disk=302 and it did not make a difference. When I do a listing of /dev/dasd* there does not show a corresponding device to run a 'mkswap' or 'mke2fs' command against. The 302 disk is CMS FORMAT'ted. John -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rick Troth Sent: Wednesday, July 18, 2007 5:37 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: RedHat ES 4 using VDISK On Wed, 18 Jul 2007, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. Not exactly. Just for clarification, CMS FORMAT does two things: low-level format (akin to 'dasdfmt') and high-level format (akin to 'mke2fs'). If the disk is FBA or VDSK then CMS FORMAT silently skips the low-level formatting operation. In general, FBA and VDSK should be usable immediately without CMS FORMAT (and without 'dasdfmt'). You can simply 'mkswap' or 'mke2fs' and use the whole disk. If you need partitioning, the story changes. And if you use 'dasdfmt -l cdl' the waters get even murkier w/r/t using the whole disk. But the low-level half of the CMS FORMAT operation is essential prior to using CKD disks, unless one runs 'dasdfmt' in Linux. *** summary *** CKD or ECKD -- require low-level formatting FBA, VDSK, SAN -- do not require low-level formatting CMS FORMAT -- performs low-level and high-level formatting 'mkswap' -- performs high-level formatting for swap space and can be run even if the disk was CMS FORMATted 'mke2fs' -- performs high-level formatting for a filesystem and can be run even if the disk was CMS FORMATted Partitioning schemes may throw-off the latter two. -- R; -- 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 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 [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: RedHat ES 4 using VDISK
Nevermind, I saw the posts, I just did not scroll down far enough. Wew, OK, you will get alot of crap, but hopefully someone from RedHat will bite. Anyway, we will figure this out. Have a nice vacation and we will work on it when you get back (oh yeah, I am off next week so perhaps the week after). Beth Beth Somers Certified Consulting I/T Specialist - Large and Storage Systems [EMAIL PROTECTED] 813-334-1238 John White [EMAIL PROTECTED] m To Sent by: Linux on LINUX-390@VM.MARIST.EDU 390 Port cc [EMAIL PROTECTED] IST.EDU Subject Re: RedHat ES 4 using VDISK 07/18/2007 11:00 AM Please respond to Linux on 390 Port [EMAIL PROTECTED] IST.EDU The following is the contents of our /etc/zipl.conf. [EMAIL PROTECTED] network-scripts]# cat /etc/zipl.conf [defaultboot] default=linux target=/boot/ [linux] image=/boot/vmlinuz-2.6.9-55.EL ramdisk=/boot/initrd-2.6.9-55.EL.img parameters=root=LABEL=/ According to (http://www.linuxvm.com/vdskdoit.html) We're supposed to add the disk to the Linux Boot Parameter file, 'i.e. disk=302' in our case. I added it as, parameters=root=LABEL=/ disk=302 and it did not make a difference. When I do a listing of /dev/dasd* there does not show a corresponding device to run a 'mkswap' or 'mke2fs' command against. The 302 disk is CMS FORMAT'ted. John -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rick Troth Sent: Wednesday, July 18, 2007 5:37 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: RedHat ES 4 using VDISK On Wed, 18 Jul 2007, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. Not exactly. Just for clarification, CMS FORMAT does two things: low-level format (akin to 'dasdfmt') and high-level format (akin to 'mke2fs'). If the disk is FBA or VDSK then CMS FORMAT silently skips the low-level formatting operation. In general, FBA and VDSK should be usable immediately without CMS FORMAT (and without 'dasdfmt'). You can simply 'mkswap' or 'mke2fs' and use the whole disk. If you need partitioning, the story changes. And if you use 'dasdfmt -l cdl' the waters get even murkier w/r/t using the whole disk. But the low-level half of the CMS FORMAT operation is essential prior to using CKD disks, unless one runs 'dasdfmt' in Linux. *** summary *** CKD or ECKD -- require low-level formatting FBA, VDSK, SAN -- do not require low-level formatting CMS FORMAT -- performs low-level and high-level formatting 'mkswap' -- performs high-level formatting for swap space and can be run even if the disk was CMS FORMATted 'mke2fs' -- performs high-level formatting for a filesystem and can be run even if the disk was CMS FORMATted Partitioning schemes may throw-off the latter two. -- R; -- 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
Re: Current Red Hat version available
We are using RHEL 4 (of some sort) on z/OS. ... Kevin: If you are running RHEL 4 on z/OS it would be a miracle (or close to it). RHEL 4 does run on System z and zSeries hardware, but z/OS is another operating system and does not support guests (that is what z/VM is for!). ;-) Jim -- 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: YaST and gratuitous package installation
Well I doubt you will get an Official response here. Mark Post may provide and un-official response, but for an official response I would be using their formal procedures to submit a question/problem. -- Mark Pace Mainline Information Systems -- 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: Anything in UNIX like a z/OS GDG?
Back in my UNIX scripting days, I scripted a process to work just like GDG's. It is predicated on having the date in the file name. Create a file with the date stamp (MMDD) in the name (include time if you run it multiple times every day). After you create the file, a clean up process is run. I ran it as part of the script that created the new file so the directory was self managing. ls /data/your_file_name_* Pipe to sort (sort descending) Pipe to AWK and execute delete commands after a specific line count. As I recall, it was basically a one line pipe to delete the oldest versions of the file. The number of files to keep was stored in an environment variable that was set by file name pattern. I'm sure there's an equivalent in LINUX, I just don't know what it would be. I'm still trying to find that script. If I find it, I'll send it to the list. It's pretty crude, but it works. -- This e-mail transmission may contain information that is proprietary, privileged and/or confidential and is intended exclusively for the person(s) to whom it is addressed. Any use, copying, retention or disclosure by any person other than the intended recipient or the intended recipient's designees is strictly prohibited. If you are not the intended recipient or their designee, please notify the sender immediately by return e-mail and delete all copies. OppenheimerFunds may, at its sole discretion, monitor, review, retain and/or disclose the content of all email communications. == -- 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: RedHat ES 4 using VDISK
Do you see the disk in the output of 'lsdasd'? If not (which is likely), you will need to rebuild the initrd. This is a little different from SLES, where I believe you append it in zipl.conf. For RHEL, modify the dasd= line in /etc/modprobe.conf, then run: # cp /boot/initrd-`uname -r`.img /boot/initrd-`uname -r`.img.backup # mkinitrd -v -f /boot/initrd-`uname -r`.img `uname -r` In the output, you should see: [snip] Adding module dasd_mod with options dasd=xxx,xxx,302 [..] Then run /sbin/zipl to update the changes. After a reboot (or bringing it online manually), /sbin/lsdad should show something like: 0.0.0302(FBA ) at ( 94: 24) is dasdx : active at blocksize 512, 524288 blocks, 256 MB -Brad On Wed, 2007-07-18 at 11:47 -0400, Beth Somers wrote: Nevermind, I saw the posts, I just did not scroll down far enough. Wew, OK, you will get alot of crap, but hopefully someone from RedHat will bite. Anyway, we will figure this out. Have a nice vacation and we will work on it when you get back (oh yeah, I am off next week so perhaps the week after). Beth Beth Somers Certified Consulting I/T Specialist - Large and Storage Systems [EMAIL PROTECTED] 813-334-1238 John White [EMAIL PROTECTED] m To Sent by: Linux on LINUX-390@VM.MARIST.EDU 390 Port cc [EMAIL PROTECTED] IST.EDU Subject Re: RedHat ES 4 using VDISK 07/18/2007 11:00 AM Please respond to Linux on 390 Port [EMAIL PROTECTED] IST.EDU The following is the contents of our /etc/zipl.conf. [EMAIL PROTECTED] network-scripts]# cat /etc/zipl.conf [defaultboot] default=linux target=/boot/ [linux] image=/boot/vmlinuz-2.6.9-55.EL ramdisk=/boot/initrd-2.6.9-55.EL.img parameters=root=LABEL=/ According to (http://www.linuxvm.com/vdskdoit.html) We're supposed to add the disk to the Linux Boot Parameter file, 'i.e. disk=302' in our case. I added it as, parameters=root=LABEL=/ disk=302 and it did not make a difference. When I do a listing of /dev/dasd* there does not show a corresponding device to run a 'mkswap' or 'mke2fs' command against. The 302 disk is CMS FORMAT'ted. John -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rick Troth Sent: Wednesday, July 18, 2007 5:37 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: RedHat ES 4 using VDISK On Wed, 18 Jul 2007, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. Not exactly. Just for clarification, CMS FORMAT does two things: low-level format (akin to 'dasdfmt') and high-level format (akin to 'mke2fs'). If the disk is FBA or VDSK then CMS FORMAT silently skips the low-level formatting operation. In general, FBA and VDSK should be usable immediately without CMS FORMAT (and without 'dasdfmt'). You can simply 'mkswap' or 'mke2fs' and use the whole disk. If you need partitioning, the story changes. And if you use 'dasdfmt -l cdl' the waters get even murkier w/r/t using the whole disk. But the low-level half of the CMS FORMAT operation is essential prior to using CKD disks, unless one runs 'dasdfmt' in Linux. *** summary *** CKD or ECKD -- require low-level formatting FBA, VDSK, SAN -- do not require low-level formatting CMS FORMAT -- performs low-level and high-level formatting 'mkswap' -- performs high-level formatting for swap space and can be run even if the disk was CMS FORMATted 'mke2fs' -- performs high-level formatting for a filesystem and can be run even if the disk was CMS FORMATted Partitioning schemes may throw-off the latter two. -- R; -- 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
Dynamically Decreasing Available Memory under Linux
Some time ago at an IBM Share I remember seeing a new technique to balloon kernel memory under a 2.6 kernel (SLES9 Update 3?) to make less memory available to all applications. The idea was to use the ballooning technique to lower available memory until swapping was induced. The problem is, I can't find any reference to it beyond Coorperative Memory Management (CMM1 and CMM2) and in all of my searching I can't find the specific commands/kernel modules that are used to execute a manual ballooning process. Any hints? Or am I completely looney? Thanks much, David Schaub Unix Engineering -- 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: Dynamically Decreasing Available Memory under Linux
Perhaps - Support for the Collaborative Memory Management Assist (CMMA) in PTF for z/VM 5.2 APAR VM63856. David Schaub [EMAIL PROTECTED] Sent by: Linux on 390 Port LINUX-390@VM.MARIST.EDU To LINUX-390@VM.MARIST.EDU cc 07/18/2007 10:56 AM Subject Dynamically Decreasing Available Memory under Linux Please respond to Linux on 390 Port LINUX-390@VM.MARIST.EDU Some time ago at an IBM Share I remember seeing a new technique to balloon kernel memory under a 2.6 kernel (SLES9 Update 3?) to make less memory available to all applications. The idea was to use the ballooning technique to lower available memory until swapping was induced. The problem is, I can't find any reference to it beyond Coorperative Memory Management (CMM1 and CMM2) and in all of my searching I can't find the specific commands/kernel modules that are used to execute a manual ballooning process. Any hints? Or am I completely looney? Thanks much, David Schaub Unix Engineering -- 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: Dynamically Decreasing Available Memory under Linux
On Wednesday, 07/18/2007 at 01:52 EDT, David Schaub [EMAIL PROTECTED] wrote: Some time ago at an IBM Share I remember seeing a new technique to balloon kernel memory under a 2.6 kernel (SLES9 Update 3?) to make less memory available to all applications. The idea was to use the ballooning technique to lower available memory until swapping was induced. The problem is, I can't find any reference to it beyond Coorperative Memory Management (CMM1 and CMM2) and in all of my searching I can't find the specific commands/kernel modules that are used to execute a manual ballooning process. Any hints? Or am I completely looney? The VM Resource Manager can send the needed message to Linux. It monitors the system for memory constraints and, if encountered, sends Linux the magic message. Look at the Linux Device Driver and Command Reference for details on how to configure Linux to receive the messages. There is also some information on some settings in the /proc file system. If you want to build the messages yourself, you'd have to go look at the code in the cmm Linux module to find the formats. Alan Altmark z/VM Development IBM Endicott -- 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: RedHat ES 4 using VDISK
This is exactly what I needed. Thank you. The VDISK swap procedure follows correctly from that point forward. John -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Brad Hinson Sent: Wednesday, July 18, 2007 12:27 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: RedHat ES 4 using VDISK Do you see the disk in the output of 'lsdasd'? If not (which is likely), you will need to rebuild the initrd. This is a little different from SLES, where I believe you append it in zipl.conf. For RHEL, modify the dasd= line in /etc/modprobe.conf, then run: # cp /boot/initrd-`uname -r`.img /boot/initrd-`uname -r`.img.backup # mkinitrd -v -f /boot/initrd-`uname -r`.img `uname -r` In the output, you should see: [snip] Adding module dasd_mod with options dasd=xxx,xxx,302 [..] Then run /sbin/zipl to update the changes. After a reboot (or bringing it online manually), /sbin/lsdad should show something like: 0.0.0302(FBA ) at ( 94: 24) is dasdx : active at blocksize 512, 524288 blocks, 256 MB -Brad On Wed, 2007-07-18 at 11:47 -0400, Beth Somers wrote: Nevermind, I saw the posts, I just did not scroll down far enough. Wew, OK, you will get alot of crap, but hopefully someone from RedHat will bite. Anyway, we will figure this out. Have a nice vacation and we will work on it when you get back (oh yeah, I am off next week so perhaps the week after). Beth Beth Somers Certified Consulting I/T Specialist - Large and Storage Systems [EMAIL PROTECTED] 813-334-1238 John White [EMAIL PROTECTED] m To Sent by: Linux on LINUX-390@VM.MARIST.EDU 390 Port cc [EMAIL PROTECTED] IST.EDU Subject Re: RedHat ES 4 using VDISK 07/18/2007 11:00 AM Please respond to Linux on 390 Port [EMAIL PROTECTED] IST.EDU The following is the contents of our /etc/zipl.conf. [EMAIL PROTECTED] network-scripts]# cat /etc/zipl.conf [defaultboot] default=linux target=/boot/ [linux] image=/boot/vmlinuz-2.6.9-55.EL ramdisk=/boot/initrd-2.6.9-55.EL.img parameters=root=LABEL=/ According to (http://www.linuxvm.com/vdskdoit.html) We're supposed to add the disk to the Linux Boot Parameter file, 'i.e. disk=302' in our case. I added it as, parameters=root=LABEL=/ disk=302 and it did not make a difference. When I do a listing of /dev/dasd* there does not show a corresponding device to run a 'mkswap' or 'mke2fs' command against. The 302 disk is CMS FORMAT'ted. John -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rick Troth Sent: Wednesday, July 18, 2007 5:37 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: RedHat ES 4 using VDISK On Wed, 18 Jul 2007, Srinivasa R Chamarthy wrote: Can you let me know what is your /etc/zipl.conf ? And also let me know if you are using a CMS formatted disk. If it is a CMS formatted disk then you can not put swap to it. and also give me the output for lsdasd. It would help me in debugging. Not exactly. Just for clarification, CMS FORMAT does two things: low-level format (akin to 'dasdfmt') and high-level format (akin to 'mke2fs'). If the disk is FBA or VDSK then CMS FORMAT silently skips the low-level formatting operation. In general, FBA and VDSK should be usable immediately without CMS FORMAT (and without 'dasdfmt'). You can simply 'mkswap' or 'mke2fs' and use the whole disk. If you need partitioning, the story changes. And if you use 'dasdfmt -l cdl' the waters get even murkier w/r/t using the whole disk. But the low-level half of the CMS FORMAT operation is essential prior to using CKD disks, unless one runs 'dasdfmt' in Linux. *** summary *** CKD or ECKD -- require low-level formatting FBA, VDSK, SAN -- do not require low-level formatting CMS FORMAT -- performs low-level and high-level formatting 'mkswap' -- performs high-level formatting for swap space and can be run even if the disk was CMS FORMATted 'mke2fs' -- performs high-level formatting for a filesystem and can be run even if the disk was CMS FORMATted Partitioning schemes may throw-off the latter two. -- R; -- 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
Re: Dynamically Decreasing Available Memory under Linux
On Wed, 2007-07-18 at 14:02 -0400, Alan Altmark wrote: On Wednesday, 07/18/2007 at 01:52 EDT, David Schaub [EMAIL PROTECTED] wrote: Some time ago at an IBM Share I remember seeing a new technique to balloon kernel memory under a 2.6 kernel (SLES9 Update 3?) to make less memory available to all applications. The idea was to use the ballooning technique to lower available memory until swapping was induced. The problem is, I can't find any reference to it beyond Coorperative Memory Management (CMM1 and CMM2) and in all of my searching I can't find the specific commands/kernel modules that are used to execute a manual ballooning process. Any hints? Or am I completely looney? The VM Resource Manager can send the needed message to Linux. It monitors the system for memory constraints and, if encountered, sends Linux the magic message. Look at the Linux Device Driver and Command Reference for details on how to configure Linux to receive the messages. There is also some information on some settings in the /proc file system. If you want to build the messages yourself, you'd have to go look at the code in the cmm Linux module to find the formats. Alan Altmark z/VM Development IBM Endicott This link seems pretty good too: http://www.vm.ibm.com/sysman/vmrm/vmrmcmm.html I haven't tried it out, but it has VM config examples. On the Linux side, you'll use the cmm module (at least as it's called in RHEL 5): # modinfo cmm filename: /lib/modules/2.6.18-8.1.3.el5/kernel/arch/s390/mm/cmm.ko license:GPL srcversion: 3CA47ECCDE19913348C9217 depends:smsgiucv vermagic: 2.6.18-8.1.3.el5 SMP mod_unload gcc-4.1 parm: sender:Guest name that may send SMSG messages (default VMRMSVM) (charp) -Brad -- 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 -- Brad Hinson [EMAIL PROTECTED] Sr. Support Engineer Lead, System z Red Hat, Inc. (919) 754-4198 -- 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: Dynamically Decreasing Available Memory under Linux
On 7/18/07, Alan Altmark [EMAIL PROTECTED] wrote: See the heading Working with cooperative memory management for the details on how to change the balloon values from Linux. Basically, in a nutshell you write a value to /proc/sys/vm/cmm_pages - but be sure you read the whole chapter! And as Alan says, you can change this value from another VM machine (if you feel like you know what you're doing...) There is also some information on some settings in the /proc file system. If you want to build the messages yourself, you'd have to go look at the code in the cmm Linux module to find the formats. Alan Altmark z/VM Development IBM Endicott -- 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 -- Bruce Hayden IBM Global Technology Services, System z Linux Endicott, NY -- 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: Current Red Hat version available
Jim Elliott [EMAIL PROTECTED] wrote: Kevin: If you are running RHEL 4 on z/OS it would be a miracle (or close to it). RHEL 4 does run on System z and zSeries hardware, but z/OS is another operating system and does not support guests (that is what z/VM is for!). ;-) Come to think of it, I'm pretty sure it would be possible to port the kernel to run as a z/OS task.. However, I doubt anyone would find any purpose to do something like that. --Ivan -- 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: Dynamically Decreasing Available Memory under Linux
On 7/18/07, Dave Hansen [EMAIL PROTECTED] wrote: Support for the Collaborative Memory Management Assist (CMMA) in PTF for z/VM 5.2 APAR VM63856. That's the other one, sometimes called CMM-2. It's a cool research project. It requires hardware support as well as Linux kernel changes to allow Linux memory management share information with VM memory management. Without the hardware support it might be pretty expensive, depending on the workload. The idea is that this should do automatic tuning with no need for knobs to turn. Last I heard was that it is possible to construct artificial workloads in a lab environment that demonstrate it to be very effective But to understand what this means for real business workload requires proper performance measurements. I have not seen any measurements published. Rob -- 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: Current Red Hat version available
Jim, See my earlier reply today about my fat-fingers (or fat brain). I know what I was trying to say...just didn't say it well. K -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Jim Elliott [EMAIL PROTECTED] Sent: Wednesday, July 18, 2007 12:59 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Current Red Hat version available We are using RHEL 4 (of some sort) on z/OS. ... Kevin: If you are running RHEL 4 on z/OS it would be a miracle (or close to it). RHEL 4 does run on System z and zSeries hardware, but z/OS is another operating system and does not support guests (that is what z/VM is for!). ;-) Jim -- 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: Current Red Hat version available
Hi James, I have ran 72hrs workload successfully with MQ 6.0.1-0 on RHEL5. Best Regards, R.Nageswara Sastry, CSTE®,C|EH® IBM India System Technology Lab [EMAIL PROTECTED] Chaplin, James [EMAIL PROTECTED] Sent by: Linux on 390 Port LINUX-390@VM.MARIST.EDU 18/07/2007 02:25 Please respond to Linux on 390 Port LINUX-390@VM.MARIST.EDU To LINUX-390@VM.MARIST.EDU cc Subject Current Red Hat version available Can anyone advise us the current version of Red Hat for the z platform that is GA to the public. We are just starting out with Red Hat, although I have SUSE experience, management wants to keep to one version, Red Hat. Does anyone have experiewnce with Red Hat Enterprise verison 5 with MQ 6.0 Comments are welcome. James Chaplin Systems Programmer (703) 921-6220 -- 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 Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting -- 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
MySQL and secure connections
Hi, We are thinking about having an application connect remotely or over the Internet directly to a MySQL database. The application will only have the ability to run stored procedures. I have two questions: I would like to know if anyone has anything positive or negative to say about having a database port open on a public network. Is anyone using MySQL server with SSL secure connections. The binary for the server as available on SLES 10 was not built with the SSL support. Has anyone built MySQL on zLinux with SSL support included? Thanks Aria. -- 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: YaST and gratuitous package installation
Well I doubt you will get an Official response here. Mark Post may provide and un-official response, but for an official response I would be using their formal procedures to submit a question/problem. Good point. I guess I mostly wanted to make sure I wasn't suffering a faulty expectation or even simply using YaST wrong before I cashed in a support call. In the end, the SP1 update process re-installed about 150 packages which I had specifically removed. Someone else was dotting his i's and asked me off-list if I'd used rpm -e with --nodeps. I did not; all the RPM dependencies were satisfied organically. ok r. -- 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: Dynamically Decreasing Available Memory under Linux
On 7/18/07, David Schaub [EMAIL PROTECTED] wrote: Some time ago at an IBM Share I remember seeing a new technique to balloon kernel memory under a 2.6 kernel (SLES9 Update 3?) to make It's CMM-1 - briefly mentioned in the Device Drivers manual. -- 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: MySQL and secure connections
On Wed, 2007-07-18 at 16:03 -0400, Aria Bamdad wrote: Hi, We are thinking about having an application connect remotely or over the Internet directly to a MySQL database. The application will only have the ability to run stored procedures. I have two questions: I would like to know if anyone has anything positive or negative to say about having a database port open on a public network. Is anyone using MySQL server with SSL secure connections. The binary for the server as available on SLES 10 was not built with the SSL support. Has anyone built MySQL on zLinux with SSL support included? Not sure if it'll help, but the Red Hat (and therefore CentOS) builds of MySQL are built with SSL support in RHEL 4 U2 and later, and RHEL 5. -Brad Thanks Aria. -- 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 -- Brad Hinson [EMAIL PROTECTED] Sr. Support Engineer Lead, System z Red Hat, Inc. (919) 754-4198 -- 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: Dynamically Decreasing Available Memory under Linux
That's the other one, sometimes called CMM-2. It's a cool research project. It requires hardware support as well as Linux kernel changes to allow Linux memory management share information with VM memory management. Without the hardware support it might be pretty expensive, depending on the workload. The idea is that this should do automatic tuning with no need for knobs to turn. Last I heard was that it is possible to construct artificial workloads in a lab environment that demonstrate it to be very effective But to understand what this means for real business workload requires proper performance measurements. I have not seen any measurements published. Also known as CMMA, requirements for using are: - z/VM 5.3 - SLES 10 SP1 - z9 EC or BC Best Regards, Les Geer IBM z/VM and Linux Development -- 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: MySQL and secure connections
I would like to know if anyone has anything positive or negative to say about having a database port open on a public network. Don't do it without SSL protection or other additional armoring techniques like restricting the IP addresses that can connect to it if you care at all about the validity of the data you receive via that database. Hostiles will a) find it, and b) misuse it. If you've taken the time to do the additional protections, then it works very reliably, even from Windows clients. Is anyone using MySQL server with SSL secure connections. The binary for the server as available on SLES 10 was not built with the SSL support. Has anyone built MySQL on zLinux with SSL support included? It works, but is somewhat difficult to build in that the package has a lot of dependencies. If you're comfortable building from source RPMs, it's not too bad, but it will take you a while to get all the moving parts put together. -- 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
