Sharing USB key by multiple virtual machines located at different hosts

A method for sharing a USB Key by a plurality of virtual machines located at different hosts, wherein a first virtual machine manager is located within a first host and manages at least one virtual machine within the first host, and a second virtual machine manager is located within a second host and manages at least one virtual machine within the second host, the method comprising:

• receiving, by the first virtual machine manager, a request for accessing a USB Key from a virtual machine within the first host, wherein an association relationship between at least one USB Key and one or more virtual machines authenticated by the at least one USB Key is stored in the first virtual machine manager;
• in response to judging that the virtual machine requesting access to the USB key can access the USB Key, transmitting, by the first virtual machine manager, the request for accessing the USB Key to the second virtual machine manager of the second host where the USB Key is located, according to the stored association relationship;
• and
• receiving, by the second virtual machine manager of the second host, the request for accessing the USB Key transmitted by the first virtual machine manager, and transmitting an access request to the USB Key connected to the second host.

A computer program product for sharing a USB Key by a plurality of virtual machines located at different hosts, wherein a first virtual machine manager is located within a first host and manages at least one virtual machine within the first host, and a second virtual machine manager is located within a second host and manages at least one virtual machine within the second host, the computer program product comprising:

• a non-transitory computer readable storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
• receiving, by the first virtual machine manager, a request for accessing a USB Key from a virtual machine within the first host, wherein an association relationship between at least one USB Key and one or more virtual machines authenticated by the at least one USB Key is stored in the first virtual machine manager;
• in response to judging that the virtual machine requesting access to the USB key can access the USB Key, transmitting, by the first virtual machine manager, the request for accessing the USB Key to the second virtual machine manager of the second host where the USB Key is located, according to the stored association relationship;
• and
• receiving, by the second virtual machine manager of the second host, the request for accessing the USB Key transmitted by the first virtual machine manager, and transmitting an access request to the USB Key connected to the second host.