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    Trying out Xen

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    • S
      stacksofplates
      last edited by

      @scottalanmiller Also, do you still feel the same way about KVM as I've read from you previously? Most of what I saw was a few years old, so I wasn't sure if it has matured enough to be something you would recommend.

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        scottalanmiller @stacksofplates
        last edited by

        @johnhooks said:

        @scottalanmiller I tried but there were no packages for CentOS 7. Ok, I'll try that then. I didn't know if it was better to use XenServer or try to install it and do everything manually. So if I'm understanding correctly, if I wanted a PV image of Ubuntu or CentOS I would use one from Xen/XenServer?

        I think that looking for an image from anyone is an odd approach to virtualization. Conceptually I'm not sure why you would want this. Don't look for them at all. If you want a standard image, install, customize and make your own. Don't look for it from someone else unless it is some sort of appliance deal where that is the only option.

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          scottalanmiller @stacksofplates
          last edited by

          @johnhooks said:

          @scottalanmiller Also, do you still feel the same way about KVM as I've read from you previously? Most of what I saw was a few years old, so I wasn't sure if it has matured enough to be something you would recommend.

          It's matured but in generally everything about KVM falls still into a "why?" category. If other options did not exist it would be excellent. But as other options do exist, what's the value?

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            scottalanmiller @stacksofplates
            last edited by

            @johnhooks said:

            @scottalanmiller I tried but there were no packages for CentOS 7. Ok, I'll try that then. I didn't know if it was better to use XenServer or try to install it and do everything manually.

            XenServer is fully packaged, with all the tools, basically fully up to date.

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              stacksofplates @scottalanmiller
              last edited by

              @scottalanmiller I guess I'm still confused on the difference between a paravirtualized guest and a regular install from an ISO.

              I guess I just assumed there was some kind of value for KVM since Red Hat is pushing it so much.

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                scottalanmiller @stacksofplates
                last edited by

                @johnhooks said:

                I guess I just assumed there was some kind of value for KVM since Red Hat is pushing it so much.

                Of course there is, tons of value. But you aren't Red Hat, so what is valuable to them isn't necessarily even remotely valuable to you. Companies push things because it is good for THEM, not you. The more someone pushes, the more it is valuable to them and not to you.

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                  scottalanmiller @stacksofplates
                  last edited by

                  @johnhooks said:

                  @scottalanmiller I guess I'm still confused on the difference between a paravirtualized guest and a regular install from an ISO.

                  Those are completely unrelated concepts. One is about installation, the other is about the platform.

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                    stacksofplates @scottalanmiller
                    last edited by stacksofplates

                    @scottalanmiller oooh ok. I must have misread something somewhere. I thought I needed an image that was pre set up for paravirtualization for compatibility. I apologize, I'm a moron. Thanks a lot!

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                      scottalanmiller @stacksofplates
                      last edited by

                      @johnhooks said:

                      @scottalanmiller oooh ok. I must have misread something somewhere. I thought I needed an image that was pre set up for paravirtualization for compatibility. I apologize, I'm a moron. Thanks a lot!

                      Nope, no need for images for anything. You can use them, of course. You probably read from a site that was talking about images and if you are using images, then yes, they would need to be expecting to be on PV rather than HVM when they are made. But if you are installing normally, you select PV or HVM at the time that you create the VM on the Xen side of things.

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                        stacksofplates @scottalanmiller
                        last edited by

                        @scottalanmiller Makes more sense now. Thanks again!

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                          scottalanmiller
                          last edited by

                          No problem. I would definitely switch to XenServer, it has more obvious interfaces and is much less "power user" focused.

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                            stacksofplates @scottalanmiller
                            last edited by

                            @scottalanmiller I just downloaded it and am putting it on a usb. What do you recommend for a client? The only Windows machine we have is my wife's old laptop. Will virt-manager work or should I use something like OpenXenManager?

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                              scottalanmiller @stacksofplates
                              last edited by

                              @johnhooks said:

                              @scottalanmiller I just downloaded it and am putting it on a usb. What do you recommend for a client? The only Windows machine we have is my wife's old laptop. Will virt-manager work or should I use something like OpenXenManager?

                              You CAN run it from USB, but it is not simple like VMware, sadly. That's something that they REALLY need to work on. It can work, but it is a huge pain.

                              You can virtualize XenCenter on top of XenServer, but obviously that has a few limitations (can't start itself, for example.) You really should use XenCenter to at least get started with XenServer, you can test out any other clients that you like after seeing what the "official" one is like. But if you have no Windows, you'll have to just experiment.

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                                stacksofplates @scottalanmiller
                                last edited by

                                @scottalanmiller Oh ok. I'll just install it. I found someone who has it running in Wine. I'll give that a shot. It does look really nice. Thanks again, I owe you a beer.

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                                  scottalanmiller
                                  last edited by

                                  Had not considered running it in Wine, that's a great idea. Citrix wants to get it ported to Linux but there is something holding them back.

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                                    stacksofplates @scottalanmiller
                                    last edited by

                                    @scottalanmiller I wouldn't be surprised if it's some kind of Windows copyright nonsense or something of that nature.

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                                      scottalanmiller @stacksofplates
                                      last edited by

                                      @johnhooks said:

                                      @scottalanmiller I wouldn't be surprised if it's some kind of Windows copyright nonsense or something of that nature.

                                      I can't imagine how that would be even possible. How could Microsoft have a copyright on the Xen console?

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                                        stacksofplates @scottalanmiller
                                        last edited by

                                        @scottalanmiller Oh I was thinking more along the lines of some protocol that was used, something like that. But then again, I have no clue what I'm talking about.

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                                          scottalanmiller @stacksofplates
                                          last edited by

                                          @johnhooks said:

                                          @scottalanmiller Oh I was thinking more along the lines of some protocol that was used, something like that. But then again, I have no clue what I'm talking about.

                                          The protocols are all Xen protocols. It's Xen talking to Xen. Xen is open source.

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                                            stacksofplates @scottalanmiller
                                            last edited by

                                            @scottalanmiller I guess I just always assume if they a company has developed it and can't move it to another platform, it's because of some legal matter. Kind of like Apple with their crazy patents. Such as their patent on "Touch screen device, method, and graphical user interface for providing maps, directions, and location-based information"

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