Computer system and control method for acquiring required resources

摘要

In cases where decided that the guaranteed resource capacity for virtual machine cannot be acquired all at one time, the computer system of the present invention decides whether or not resource capacity guaranteed for virtual machine can be continuously acquired by the start of the virtual machine operation, and if decided that the resource capacity can be continuously acquired, the computer system allocates the total acquired resource capacity to the virtual machine deployed on the physical machine.

主权项

1. A computer system comprising:
a plurality of physical servers; and a management computer to manage the plurality of physical servers, wherein the plurality of physical servers each include: a first memory to store programs to create and operate virtual machines; and a first processor to execute the programs in the first memory to create virtual machines, to allocate resources to the created virtual machines, and to operate the applicable virtual machines, wherein the management computer includes: a second memory to store programs to manage resources for the virtual machines; a second processor to execute the programs in the second memory to manage the allocation of resources to the virtual machines, and the second processor is configured to: identify one of the physical servers which can provide resources to meet a resource capacity required by one of the virtual machines by starting the one of the virtual machines after the installation thereof, and set the identified one of the physical servers as physical server for running the one of the virtual machines, wherein the first controller of the one of the physical servers where the one of the virtual machines is installed, operates the one of the virtual machines by allocating the required resource capacity to the installed one of the virtual machines, and wherein the acquisition of additional resource is requested after a fixed period of time has elapsed.