Patent ID: 7490203
Filing Date: 2009-02-10
Classification: G06F

Abstract:
1. A method, comprising: assigning each of a plurality of processing systems a logical device implemented in a shared storage device, wherein each logical device is implemented at a separate location on the shared storage device and wherein the processing systems write data to the shared storage device by writing to the logical devices to which they are assigned; receiving, at the plurality of processing systems, a signal indicating a failure in a processing complex including the processing systems; requesting a lock, by the processing systems, in response to the signal; writing, by each of the processing systems, data used by the processing system to the logical device assigned to the processing system in the shared storage device in response to receiving the signal and in response to obtaining the requested lock; and releasing, by the processing system holding the lock, the lock in response to writing the data to the shared storage device.