Emc Corporation

Emc IP Holding Company LLC

James F Britton

Russell R Laporte

Yuanjie Wu

Subbulakshmi Premkumar

Sriram Krishnan

Krishnakumar Subramanian

Pradyumna Revur

Kevin S Labonte

Paul Lapomardo

Rongzhang Wu

Yiyang Zhang

Described are techniques for processing a request from a client for performing an operation that is received by a business logic provider. First processing is performed by the business logic provider to process the request that includes communicating with other providers for information in connection with the request, performing validation processing using the information obtained from the other providers to determine whether one or more restrictions are violated, each of said one or more restrictions identifying a required state of one or more objects for performing an operation of the request, determining whether any restrictions are violated, and performing one or more actions responsive to determining that any restrictions are violated.

Techniques for performing data validation

Described are techniques for processing a request from a client. Validation processing is performed to determine whether any restrictions are violated. With respect to two associated objects for a logical device and its snapshot, a business logical provider may perform runtime checks regarding the two associated objects of the same or different frameworks to ensure a valid state exists with respect to the requested operation on the two associated objects. For example, the request may be to restore a logical device to its previous snapshot and the restrictions may indicate to not perform the restore if the logical device is in an active mirroring relationship, a source of an active migration, or if the snapshot has expired. The request may be to destroy the logical device which is included in a consistency group and a restriction indicates that a logical device included in a consistency group may not be destroyed.

Described are techniques for processing a request received at a business logic provider from a client. The request includes a snapshot identifier uniquely identifying a snapshot having a snapshot object in a first data model and requests properties of a storage device providing a data source for the snapshot identified by the snapshot identifier. The snapshot object is requested from, and returned by, a snapshot provider. The business logic provider requests, from a storage device provider using a first property of the snapshot object, a storage device object corresponding to the storage device identified by the first property. The storage device provider returns the storage device object to the business logic provider. The storage device object is then returned to the client.

Techniques using associated object properties

An information system has a database having distinct object structures that store information about corresponding operating components of the system. An association structure describes many-to-many relationships among the components. Targeted requests for information about first objects are satisfied by obtaining information from a first object structure as well as information about associated objects from the second object structure. Bulk requests for information about a large number of objects are handled differently, using a lookup structure that associates the first objects with limited information of the associated second objects, such as externally visible names which would be meaningful to a requestor. Thus response can efficiently provide full information about all first objects as well as limited but useful information about all associated second objects, avoiding traversals of the association structure and corresponding interrogations of the second object structure.

Application programming interface for efficient object information gathering and listing

A method is used in managing command line interface commands. Legacy CLI command information is received at a command line interface (CLI) provider. At the CLI provider, it is determined to convert the legacy CLI command information. The CLI provider has an adapter for performing the conversion. Updated CLI command information is derived by the adapter from the legacy CLI command information. The updated CLI command information is submitted to a plugin for processing.

Managing command line interface commands

An architecture, system, and method for managing a data storage system by contacting a single processor in a data storage system having more than one processor. The single processor contacts each other peer processor in the data storage system and merges selected data from the single processor with data from the peer processor to determine the state of the data storage system.

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Framingham, MA, United States of America

James F Britton