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On Thursday, September 24, 2015 09:45:09 AM Rich Freeman wrote: |
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> On Thu, Sep 24, 2015 at 9:22 AM, J. Roeleveld <joost@××××××××.org> wrote: |
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> > For PV, grub is actually more work to get working. There is a config |
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> > option for the commandline. I will send one of mine later today. |
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Please see email from Håkon Alstadheim for the example. |
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> I can believe that. My only experience is with Amazon, which doesn't |
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> give you any control over the host xen. It just runs grub with a |
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> grub.cfg you provide if you want to run your own kernel (unless that |
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> has changed). |
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Sounds like pvgrub. I never looked into setting that up, afaiui, it mounts the |
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guest filesystem, grabs the grub.cfg, grabs the kernel listed there, umounts, |
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then boots the guest. |
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> > Does EC2 actually provide PV guests? |
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> > With PV, the guest knows it's a guest and communicates with Xen. Non-PV |
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> > has an emulation layer (qemu) running on the host that hides the |
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> > virtualisation from the guest. Special drivers on the guest can help with |
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> > performance, but isn't necessary to get it to work. |
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> I believe that EC2 ONLY provides PV guests. I don't believe it will |
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> do full virtualization for linux guests. They do provide windows |
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> guests, and I'm not sure of the details of how that is done. If you |
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> want to run a linux guest you either use one of their kernels, or you |
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> can run your own as long as it supports Xen PV. |
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Windows guests will run in PVH mode as I doubt Microsoft has a PV-enabled |
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kernel available for Amazon :) |
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-- |
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Joost |