Abstract: The present invention discloses an adjustable cam driving mechanism which comprises a support frame, an input gear, an intermediate gear and an output gear. The input gear, the intermediate gear and the output gear are respectively arranged on the support frame. The intermediate gear is adjustably fixed on the support frame. The input gear and/or the output gear are/is adjustably fixed on the support frame. The adjustable cam driving mechanism of the present invention can adapt to engines of different displacement volumes.

Abstract: A system and method are provided for virtual machine management. The system comprises a virtual machine manager, a blade server management module, at least one blade server, and a virtual machine manager. The virtual machine manager comprises an abnormal event receiving module for receiving information about a blade server having a hardware problem directly from the blade server management module and additionally a virtual machine management module for sending a processing command to a virtual machine hypervisor on the blade server having the hardware problem. The virtual machine management module receives the information about the hardware problem from the abnormal event receiving module. The processing command is determined in accordance with the information about the hardware problem and strategies for handling predefined hardware problems.

Abstract: A method and apparatus are disclosed for mounting at least one file to a host. The method comprises creating a virtual device image comprising a logical block address table. The method further comprises writing information regarding a block address and a size of an occupied space of the at least one file into the logical block address table, the information being calculated according to a format of a normal device image file system. Moreover, the method comprises recording in the logical block address table a file address map relationship comprising a map from the block address of the at least one file to a real position of the at least one file outside of the virtual device image. Furthermore, the method comprises mounting the virtual device image to the host. At least one directory may be mounted in addition to or in lieu of the at least one file.