| 摘要 |
A computer-implemented method for migrating virtual machines may include: 1) identifying a request to migrate a virtual machine from a primary site to a secondary site, the primary site including a primary storage device used by the virtual machine and configured for asynchronous replication to a secondary storage device at the secondary site, 2) identifying a difference map that reflects differences between data on the primary storage device and the secondary storage device, 3) initiating the virtual machine at the secondary site, 4) intercepting an input/output attempt from the virtual machine at the secondary site to the secondary storage device, 5) determining, based on the difference map, that a region of the input/output attempt has not been synchronized from the primary storage device, and 6) retrieving the region from the primary storage device before allowing the input/output attempt to proceed. Various other methods, systems, and computer-readable media are disclosed.
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