Emc IP Holding Company LLC

Scott D Haskin

Ron Steinke

David Richards

Gerald T Carter

Advertising of nonlinear nondisruptive upgrades is presented herein. The method comprises in response to establishing a network connection to a group of networked devices, determining a software product feature associated with a software product based on tag data; generating an advertising bit mask representing the software product feature; and broadcasting the advertising bit mask.

Feature advertising for nonlinear nondisruptive upgrades

Implementations are provided herein for non-disruptive upgrade including rollback capabilities for a distributed file system within a cluster of nodes. To continue availability of the file system to external clients during the upgrade process, nodes can be upgraded piecemeal, for example, in one implementation, one node at a time. When a node is undergoing certain stages of the upgrade process, external clients can be directed toward the remaining nodes of the file system that are not currently being upgraded, including already upgraded nodes, to perform client activity. During the upgrade process, a first subset of nodes can be running in an upgraded state while a second subset of nodes can be in a non-upgraded state, both providing access to external clients in a seamless manner. During the upgrade process, an administrator can decide to rollback any upgrades and return the distributed file system to its previous version (e.g., the version of the file system prior to starting the non-disruptive upgrade process). Hooks can be provided prior to, during, and after various stages of the upgrade or rollback process that can allow services of the distributed file system to be notified of certain events of the upgrade process, or execute service specific processes at distinct times during the upgrade process. At the conclusion of an upgrade or rollback process, the distributed file system can enter a committed state that finalizes the process and cements an upgrade or a rollback to a more permanent state.

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Renton, WA, United States of America

Scott D Haskin