Patent ID: 9215279
Filing Date: 2015-12-15
Classification: H04L

Abstract:
1. A cluster storage system for providing data-access sessions with clients that access data containers of a shared storage of the cluster storage system, the cluster storage system comprising: a plurality of nodes comprising a serviced node and a partner node, each node comprising a storage device software component (“D-blade”) configured for receiving access requests for data containers of the shared storage, the serviced node comprising a serviced D-blade and the partner node comprising a partner D-blade; the serviced D-blade configured for: receiving, from a first client through a network connection, a first access request for a first data container stored on the shared storage, the first client previously being verified as having permission to connect with the serviced D-blade through a connection authentication procedure, the first client having an associated first user identifier (ID); using the first user ID and permission metadata associated with the first data container, performing a first access request validation procedure on the first access request to verify that the first client has permission to access the first data container; after verifying that the first client has permission to access the first data container; producing a first data container handle comprising a physical address for the first data container and performing the first access request on the first data container; sending the first data container handle to the first client; and storing session data comprising a plurality of data container handles, including the first data container handle, and the first user ID; a servicing module configured for servicing the serviced D-blade by: taking the serviced D-blade offline by forcing a network disconnection with each client, including the first client, currently accessing a data container using the serviced D-blade; beginning servicing of the serviced D-blade, the servicing comprising upgrading, re-installing, performing maintenance, or repairing the serviced D-blade; and providing access of the session data to the partner D-blade; and the partner D-blade configured for: receiving, from the first client, a second access request for the first data container, the second access request specifying the first data container handle and the first user ID; and upon determining that the session data comprises a data container handle matching the first data container handle and a user ID matching the first user ID, performing the second access request on the first data container based on the first access request validation procedure on the first user ID.