APPARATUS AND METHOD FOR DETECTING AND RECOVERING THE FAULT OF DEVICE DRIVER IN VIRTUAL MACHINE

摘要

PURPOSE: An apparatus for detecting and restoring an error of a device driver in a virtualization system and a method thereof are provided to detect an error of a driver VM in advance and suppress the error, thereby guaranteeing stability of a guest VM connected to the driver VM. CONSTITUTION: A guest VM(Virtual Machine)(30) executes at least one OS(Operating System). A driver VM(50) controls a hardware device(10) corresponding to the guest VM. An input/output information storing unit(61,62) stores information about a request and a response between the guest VM and the driver VM. A VMM(Virtual Machine Monitor)(20) virtualizes the hardware device to operate the guest VM. The VMM includes an error detecting monitor which periodically checks whether the driver VM has an error using information stored in the input/output information storing unit.