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Method and system for handling storage in response to migration of a virtual machine in a virtualization environment

  • US 9,575,784 B1
  • Filed: 01/18/2013
  • Issued: 02/21/2017
  • Est. Priority Date: 08/10/2011
  • Status: Active Grant
First Claim
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1. A method for handling storage in response to migration of a virtual machine in a virtualization environment, comprising:

  • receiving an I/O request for an unshared virtual disk owned by a first service virtual machine, wherein a second service virtual machine receives the I/O request;

    determining that the second service virtual machine which implements a storage controller is not registered as owner of the unshared virtual disk, wherein only a service virtual machine registered as owner of the unshared virtual disk is permitted to access the unshared virtual disk to implement the I/O request, and wherein the act of determining occurs in response to the second service virtual machine receiving the I/O request for the unshared virtual disk owned by the first service virtual machine;

    transferring ownership of the unshared virtual disk from the first service virtual machine to the second service virtual machine; and

    the second service virtual machine implementing the I/O request after obtaining ownership of the unshared virtual disk.

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