| 摘要 |
In a computer system having a plurality of host data processors (1-3), a communication unit (4) for interconnecting the data processors and a file unit (61 - 66) for storing a common data resource shared by the data processors, the common data resource is logically divided into groups 61,62; 63,64; 65,66 associated with the respective hosts 1;2;3, a host being thus assigned to each group of the data resource as master of that group. A lock request to the common data resource is sent to a lock manager (21,22,23) on the host which is the master of the data resource group to be locked, and exclusive control is performed thereto. The hardware overhead for control of access to the resource is thus reduced. The hosts may provide for mutual back-up in the event of failure (Figures 4,5). <IMAGE> |
