Linux VServer
I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. http://en.wikipedia.org/wiki/Comparison_of_virtual_machines Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Thanks for your input. Russ -- 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: Linux VServer
I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Two words: use z/VM. It's far more efficient, and you don't have to modify kernels or user code. The same common code savings can be accomplished with z/VM, and you get a lot of freebies on the management side that none of the options listed provide. -- 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: Linux VServer
On Oct 25, 2007, at 2:50 PM, Jones, Russell wrote: I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. http://en.wikipedia.org/wiki/Comparison_of_virtual_machines Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Thanks for your input. Um, why? That's kinda what VM is for, right? One other way to do it would be to run Linux on the iron, and then Hercules on Linux, and then Linux on the emulated S/390 on Hercules. You won't like it much though. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: Linux VServer
On Oct 25, 2007, at 2:50 PM, Jones, Russell wrote: I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. http://en.wikipedia.org/wiki/Comparison_of_virtual_machines Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Thanks for your input. There is a thing called XEN that does virtualization of Linux on Linux. It has an open source version and a $ version by Novell. z/VM is MUCH better, though. Tom -- 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: Linux VServer
Unfortunately we are not a VM shop. We are running z/Linux in an LPAR. Until we can justify the expense of purchasing VM, I am looking for a free way to run some virtual Linux images. There may not be a good open source solution available, but it never hurts to ask. Ask your IBM rep for a z/VM trial, which costs nothing. You'll use more time and effort trying to make the other solutions work than the ultimate price of VM, and if you go the trial route, you'll already have the environment you're going forward with installed and ready to go, and you'll have the justification you're trying to establish. -- 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: Linux VServer
Unfortunately we are not a VM shop. We are running z/Linux in an LPAR. Until we can justify the expense of purchasing VM, I am looking for a free way to run some virtual Linux images. There may not be a good open source solution available, but it never hurts to ask. Russ -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of David Boyes Sent: Thursday, October 25, 2007 2:55 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Linux VServer I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Two words: use z/VM. It's far more efficient, and you don't have to modify kernels or user code. The same common code savings can be accomplished with z/VM, and you get a lot of freebies on the management side that none of the options listed provide. -- 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: Linux VServer
Are you running more than 1 Linux LPAR? a) No. Then you are probably not a good candidate for Linux on zSeries anyway. A one Linux situation does not play to the zSeries strenghts. b) Yes. Use your favorite performance tools and do some math. There is a fair chance the hardware savings of collapsing them onto one zVM image will pay for zVM. Best regards, Pieter Harder [EMAIL PROTECTED] tel +31-73-6837133 / +31-6-47272537 Jones, Russell [EMAIL PROTECTED] 10/25/07 10:04 Unfortunately we are not a VM shop. We are running z/Linux in an LPAR. Until we can justify the expense of purchasing VM, I am looking for a free way to run some virtual Linux images. There may not be a good open source solution available, but it never hurts to ask. Russ -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of David Boyes Sent: Thursday, October 25, 2007 2:55 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Linux VServer I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Two words: use z/VM. It's far more efficient, and you don't have to modify kernels or user code. The same common code savings can be accomplished with z/VM, and you get a lot of freebies on the management side that none of the options listed provide. -- 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: Linux VServer
Looking at the description of Linux-Vserver, it is a virtualizing system in it's most rudimentary sense of the word. As near as I can tell, it is much more comparable with something like Solaris Zones, in that it traps the virtual environment in something similar to chroot, but everything still runs within one Linux operating system. Advantage: It's free, or close to it. Disadvantages: It doesn't take any advantage of the hardware it's running on. If an application manages to crash the system, it has crashed all the systems It doesn't provide the degree of virtual environment separation that z/VM does It doesn't really isolate the resource usage; everything is in one Linux box It's not a real virtual environment; It's just a way of containing several users within a separated environment within a single Linux image. So... It's well worth the price, but doesn't address a myriad of issues that z/VM does. You'll never the the performance from it that you will running beneath z/VM. You'll save money in licensing, but lose that money in performance. You'll never run the same number of virtual Linux images that you can within z/VM. You could definitely try it But I think you'll find it very limited and confining. In short, I wouldn't mess with it. Get z/VM; you'll reduce your learning curve, because you won't have to learn Linux-Vserver, and then turn around and learn z/VM. -- .~.Robert P. Nix Mayo Foundation /V\RO-OE-5-55200 First Street SW /( )\ 507-284-0844 Rochester, MN 55905 ^^-^^ - In theory, theory and practice are the same, but in practice, theory and practice are different. On 10/25/07 2:58 PM, Adam Thornton [EMAIL PROTECTED] wrote: On Oct 25, 2007, at 2:50 PM, Jones, Russell wrote: I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. http://en.wikipedia.org/wiki/Comparison_of_virtual_machines Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Thanks for your input. Um, why? That's kinda what VM is for, right? One other way to do it would be to run Linux on the iron, and then Hercules on Linux, and then Linux on the emulated S/390 on Hercules. You won't like it much though. Adam -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- 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: Linux VServer
Note that zen will not run on the mainframe. It is Intel-specific. -- .~.Robert P. Nix Mayo Foundation /V\RO-OE-5-55200 First Street SW /( )\ 507-284-0844 Rochester, MN 55905 ^^-^^ - In theory, theory and practice are the same, but in practice, theory and practice are different. On 10/25/07 3:03 PM, Tom Shilson [EMAIL PROTECTED] wrote: On Oct 25, 2007, at 2:50 PM, Jones, Russell wrote: I am looking into running linux virtual machines under a linux host on S/390 architecture. According to this list, Linux VServer is available for S/390. http://en.wikipedia.org/wiki/Comparison_of_virtual_machines Has anyone tried it? Are there other virtual machines that will run under a linux host on S/390? Thanks for your input. There is a thing called XEN that does virtualization of Linux on Linux. It has an open source version and a $ version by Novell. z/VM is MUCH better, though. Tom -- 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: Linux VServer
Advantage: It's free, or close to it. Disadvantages: It doesn't take any advantage of the hardware it's running on. It doesn't need to If an application manages to crash the system, it has crashed all the systems And if an app crashes the hypervisor down goes the box (console scrolling ?). So its a risk thing It doesn't provide the degree of virtual environment separation that z/VM does Its specifically designed not to It doesn't really isolate the resource usage; everything is in one Linux box Ditto It's not a real virtual environment; It's just a way of containing several users within a separated environment within a single Linux image. Ditto - and because of this its vastly more efficient especially for memory usage. You are comparing apples and oranges here. I guess if you wanted hypervisor type seperation on the cheap someone should port lguest to S/390. Alan -- 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
