Instant virtual machines

摘要

A resource management node is provided including a processor and a memory. The memory is coupled to the processor and comprises computer readable program code that when executed by the processor causes the processor to perform operations including creating a recovery virtual machine (VM) for a primary machine for each of a primary machines. The recovery VM is stored in a cache file in a kernel of an operating system. The data in the cache file is stored in a format readable by a virtual hypervisor. The processor is further caused to perform operations including providing the recovery VM from the cache file in the kernel of the operating system upon request when the primary machine fails without conversion of the data in the cache file.

主权项

1. A resource management node comprising:
a processor; and a memory coupled to the processor and comprising computer readable program code that when executed by the processor causes the processor to perform operations comprising:
for each of a plurality of primary machines, creating a recovery virtual machine (VM) for a primary machine, the recovery VM being stored in a cache file in a kernel of an operating system and data in the cache file being stored in a format readable by a virtual hypervisor;repeatedly modifying the cache file to correspond to modifications made to the primary machine;maintaining a backup VM session that remains unmodified relative to modifications of the primary machine; andproviding the recovery VM from the cache file in the kernel of the operating system upon request when the primary machine fails without conversion of the data in the cache file.