Emc IP Holding Company LLC

Alex Kulakovsky

Liran Loya

Ahia Lieber

Sally Golan

Alexander Shraifel

Erez Bashi

Performing upgrades may include: receiving a package including upgrade types each identifying a different upgrade subcomponent of the package; receiving a metadata file describing the package; receiving selection information identifying one or more of the upgrade types of the metadata file, wherein the one or more upgrade types identified by the selection information denote one or more corresponding upgrade subcomponents of the package to be upgraded; and performing first processing that upgrades a system in accordance with the metadata file and the selection information. The metadata file may identify an order for installing upgrade subcomponents, which upgrade subcomponents may be installed in parallel, and dependencies between different upgrade subcomponents. Modules of a system may implement a multi-phase state machine. During installation of an upgrade subcomponent, the multiple phases may be completed in a specified order where code of the modules implementing each phase may be invoked.

Meta data driven upgrades

An apparatus in one embodiment is configured to extract a set of components utilized in a first version of a storage controller operating system (OS) to a designated partition of a storage system on which the first version of the storage controller OS is to be installed, and to identify changes to be applied for installing the first version of the storage controller OS by comparing content of the extracted set of components utilized in the first version of the storage controller OS with content of components utilized in a second version of the storage controller OS that is currently installed. The apparatus is also configured to apply, utilizing at least one rule corresponding to at least one component utilized in the first version of the storage controller OS, at least one of the identified changes to upgrade to the first version of the storage controller OS.

Upgrading a storage controller operating system without rebooting a storage system

An aspect of module mirroring during an non-disruptive upgrade includes creating a mirrored set of management processes for a storage cluster that is subject to an upgrade a new software version, interconnecting components of the mirrored set and an original set of the management processes while the storage cluster is actively managed by an original set of management processes, and performing a handover between the management processes of the storage cluster.

Module mirroring during non-disruptive upgrade

Moving from a back-to-back topology to a switched topology in an InfiniBand network includes, prior to connecting a switch for a first storage controller in the network and during reboot of the first storage controller, waiting for a second storage controller in the network to become master, and upon the second storage controller becoming master, changing cache files for local ports on the first storage controller regarding adjacent ports' LID assignments. An aspect further includes restarting a system manager for the first storage controller, connecting the first storage controller to the system with new LID assignments provided by changed files on first storage controller, and upon the first storage controller becoming active, rebooting the second storage controller, changing the LID assignments in the active storage controller, and adding new switches to the system.

Growing community of inventors

Jerusalem, Israel

Alex Kulakovsky