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ON DEMAND VIRTUAL MACHINE IMAGE STREAMING

  • US 20120066677A1
  • Filed: 09/10/2010
  • Published: 03/15/2012
  • Est. Priority Date: 09/10/2010
  • Status: Active Grant
First Claim
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1. A method for on demand virtual machine image streaming, comprising:

  • copying, from a storage server storing one or more image templates corresponding respectively to one or more virtual machines, an image metadata associated with a selected virtual machine to a host computer'"'"'s local storage, wherein the host computer'"'"'s local storage initially does not include an image of the selected virtual machine;

    booting the selected virtual machine at the host computer using the copied image metadata;

    allowing the selected virtual machine to read data from the image template on the storage server needed to continue executing the selected virtual machine at the host computer, if the needed data are not stored on the host computer'"'"'s local storage;

    copying the read data of the image template to the host computer'"'"'s local storage from the storage server, if the read data of the image template are not stored on the host computer'"'"'s local storage, wherein subsequent reads to the same data are done from the host computer'"'"'s local storage;

    setting a bit in a bitmap to indicate that the read data are stored on the host computer'"'"'s local storage; and

    utilizing resource idle time to prefetch data of the image template associated with the selected virtual machine from the storage server to the host computer'"'"'s local storage.

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