A computer implemented method, apparatus, and computer program product for creating a checkpoint for a software partition. A checkpoint request is received for creating the checkpoint for the software partition. Each process in a set of processes in the software partition is frozen to form a set of frozen processes. In an asynchronous input/output queue, the status of each input/output request sent by the set of frozen processes is set to “suspended” to form a set of suspended requests, wherein the set of suspended requests are not performed. The set of suspended requests are stored in the checkpoint to form stored requests.