Patent ID: 8839030
Filing Date: 2014-09-16
Classification: G06F,Y02D

Abstract:
1. A storage system comprising: one or more storage devices; a first storage controller coupled with the one or more storage devices, the first storage controller operable to manage a logical volume provisioned on the one or more storage devices, further operable to process host I/O requests directed to the logical volume, further operable to initiate a background processing task distinct from the host I/O requests and related to the logical volume, and further operable to store progress information on at least one of the one or more storage devices describing progress of the background processing task; and a second storage controller operable to detect a failure of the first storage controller, further operable to acquire the progress information from the at least one of the one or more storage devices, and further operable to resume the background processing task based on the acquired information.