| 摘要 |
A virtual computer system, including one or more virtual machines (VMs), is connected to a redundant data storage system having multiple paths for routing data between the computer system and the data storage system. The VMs are supported by a kernel, which includes a resource manager for allocating system resources among the VMs, including data storage space and data storage bandwidth. A storage path manager (SPM) is integrated into the kernel for routing data between the computer system and the data storage system, including providing functions such as failovers and failbacks, as well as load distribution. Integrating the SPM into the kernel improves the kernel's ability to manage the VMs and to provide SAN resources to the VMs. For example, the SPM may enhance the isolation between multiple VMs by routing their respective data over different data paths. Also, the SPM may improve the allocation of system resources by coordinating with the resource manager.
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