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32 results about "Global Namespace" patented technology
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A Global Namespace (GNS) is a heterogeneous, enterprise-wide abstraction of all file information, open to dynamic customization based on user-defined parameters. This becomes of particular importance as multiple network based file systems proliferate within an organization—the challenge becomes one of effective file management.
Managing a global namespace for a distributed filesystem
ActiveUS20140006465A1Outweigh additional overheadIncreasing file access performanceDigital data information retrievalSpecial data processing applicationsFile systemCloud storage system
The disclosed embodiments disclose techniques for managing a global namespace for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in a cloud storage system; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. Furthermore, a global namespace for the distributed filesystem is also split across these cloud controllers, with each cloud controller “owning” (e.g., managing write accesses for) a distinct portion of the global namespace and maintaining a set of namespace mappings that indicate which portion of the namespace is assigned to each cloud controller. During operation, an initial cloud controller receives a request from a client system to access a target file in the distributed system. This initial cloud controller uses the namespace mappings for the global namespace to determine a preferred cloud controller that will handle the request.
Owner:PANZURA LLC
File Aggregation in a Switched File System
InactiveUS20090077097A1Digital data information retrievalMemory loss protectionFile systemGlobal file system
In a switched file system, a file switching device is logically positioned between clients and file servers and communicates with the clients and the file servers using standard network file protocols. The file switching device appears as a server to the client devices and as a client to the file servers. The file switching device aggregates storage from multiple file servers into a global filesystem and presents a global namespace to the client devices. The file switching device typically supports a “native” mode for integrating legacy files into the global namespace and an “extended” mode for actively managing files across one or more file servers. Typically, native-mode files may be accessed directly or indirectly via the file switching device, while extended-mode files may be accessed only through the file switching device. The file switching device may manage file storage using various types of rules, e.g., for managing multiple storage tiers or for applying different types of encoding schemes to files. Rules may be applied to pre-existing files.
Owner:RPX CORP
File Aggregation in a Switched File System
InactiveUS20090106255A1Digital data information retrievalError detection/correctionGlobal file systemFile system
In a switched file system, a file switching device is logically positioned between clients and file servers and communicates with the clients and the file servers using standard network file protocols. The file switching device appears as a server to the client devices and as a client to the file servers. The file switching device aggregates storage from multiple file servers into a global filesystem and presents a global namespace to the client devices. The file switching device typically supports a “native” mode for integrating legacy files into the global namespace and an “extended” mode for actively managing files across one or more file servers. Typically, native-mode files may be accessed directly or indirectly via the file switching device, while extended-mode files may be accessed only through the file switching device. The file switching device may manage file storage using various types of rules, e.g., for managing multiple storage tiers or for applying different types of encoding schemes to files. Rules may be applied to pre-existing files.
Owner:RPX CORP
Remote File Virtualization in a Switched File System
A plurality of network file manager switches interoperate to provide remote file virtualization. Copies of file data and / or metadata are maintained at a central site and at one or more remote sites. The network file manager switch at the remote site may satisfy certain client requests locally without having to contact the network file manager switch at the central site. A global namespace is maintained and is communicated to all network file manager switches.
Owner:RPX CORP
Internal object protection from application programs
InactiveUS20050091214A1Reduce the possibilityResource allocationDigital data processing detailsOperational systemObject store
Granting an executable object (e.g., an application program, thread, or process) access to a namespace object (e.g., a named object, resource, file, or folder). A request by the executable object for the namespace object is intercepted and processed to determine whether a local namespace associated with the executable object, user, or session stores a copy of the requested namespace object. If the copy exists in one of the local namespaces, the request is granted and allowed to operate on that local namespace. If the requested namespace object exists only in a global namespace, the namespace object is copied to a local namespace. The request is then granted and allowed to operate on the copy of the namespace object in the local namespace. Protecting the namespace objects stored in the global namespace from modification improves the stability of the application program and operating system.
Owner:MICROSOFT TECH LICENSING LLC
Scalable global namespace through referral redirection at the mapping layer
ActiveUS7937453B1Increase speedDigital data information retrievalDigital data processing detailsVirtual file systemStorage area network
Client computers, a namespace server, and file servers are linked in a data network so that the namespace server provides the clients with NFS or CIFS access to a virtual file system including files stored in the file servers, and also provides migration of files between the file servers in a fashion transparent to the client access using NFS or CIFS. The client computers and storage arrays storing the file data are also linked in a storage area network so that the clients have high speed block access to the file data using a file mapping protocol. The namespace server redirects a metadata access request in the file mapping protocol from a client to the appropriate file server when the file is not being migrated, and otherwise denies the metadata access request when the file is being migrated so that the client reverts to NFS or CIFS access.
Owner:EMC IP HLDG CO LLC
Managing a global namespace for a distributed filesystem
ActiveUS9805054B2Outweigh additional overheadImprove performanceDigital data information retrievalMultiple digital computer combinationsFile systemCloud storage system
The disclosed embodiments disclose techniques for managing a global namespace for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in a cloud storage system; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. Furthermore, a global namespace for the distributed filesystem is also split across these cloud controllers, with each cloud controller “owning” (e.g., managing write accesses for) a distinct portion of the global namespace and maintaining a set of namespace mappings that indicate which portion of the namespace is assigned to each cloud controller. During operation, an initial cloud controller receives a request from a client system to access a target file in the distributed system. This initial cloud controller uses the namespace mappings for the global namespace to determine a preferred cloud controller that will handle the request.
Owner:PANZURA LLC
Social namespace addressing for non-unique identifiers
Owner:VERIZON PATENT & LICENSING INC
Method and System of Frame Forwarding with Link Aggregation in Distributed Ethernet Bridges
Embodiments relate to forwarding of packets in link aggregation environments. A method for forwarding a packet through an extended switch including a first port extender and a second port extender directly or indirectly communicatively coupled to respectively a first interface and a second interface of a controlling bridge includes, associating a first port extender interface of the first port extender with a global namespace or an interface-specific namespace. The method further includes receiving a packet through the first port extender interface, marking the received packet with an indication of the namespace configuration of the first port extender interface, processing the marked packet in the controlling bridge based at least in part upon the indication, and transmitting the processed packet out of the controlling bridge.
Owner:AVAGO TECH INT SALES PTE LTD
Metadata management method for nas global namespace design
InactiveUS20110231524A1Digital data information retrievalDigital computer detailsMetadata managementHeterogeneous network
A global namespace (GNS) is constructed across heterogeneous network-attached storage (NAS) devices by organizing metadata servers into a cluster layer having cluster nodes and a consistent hashing overlay layer having overlay nodes. The global namespace is distributed based on workload at the cluster and overlay nodes, and a portion of the GNS namespace may be migrated from one layer to the other. Cluster nodes may be added to the cluster layer, overlay nodes may be added to the consistent hashing overlay layer. Further, a cluster node may become an overlay node or an overlay node may become a cluster node. To access the global namespace, a request for namespace metadata managed by a cluster node is serviced by the cluster node, but if the requested namespace metadata have been migrated to the consistent hashing overlay layer, the cluster node will forward the request to the responsible overlay node for servicing.
Owner:HITACHI LTD
On Demand File Virtualization for Server Configuration Management with Limited Interruption
InactiveUS20090204705A1Control interruptionEliminate distractionsDigital data information retrievalDigital computer detailsVirtualizationClient-side
Inserting a file virtualization appliance into a storage network involves configuring a global namespace of a virtualization appliance to match a global namespace exported by a distributed filesystem (DFS) server and updating the distributed filesystem server to redirect client requests associated with the global namespace to the virtualization appliance. Removing the file virtualization appliance involves sending a global namespace from the virtualization appliance to the distributed filesystem server and configuring the virtualization appliance to not respond to any new client connection requests received by the virtualization appliance.
Owner:RPX CORP
System and method for data protection management in a logical namespace of a storage system environment
A system and method for data protection in a logical namespace of a storage system environment is provided. An integrated management framework implements a data protection technique that monitors failures in the logical namespace at a managed data object granularity, e.g., a share. In the event of a failure to the data object, e.g., a primary share, the data protection technique enables automatic failover for a link point to the object (primary share) that is protected by a backup copy of the data object, e.g., a secondary share. That is, the data protection technique enables failover from the primary share to a secondary share and corresponding linking of the secondary share to the link point in the logical namespace.
Owner:NETWORK APPLIANCE INC
Remote file virtualization in a switched file system
ActiveUS8682916B2Digital data information retrievalDigital data processing detailsVirtualizationFile system
A plurality of network file manager switches interoperate to provide remote file virtualization. Copies of file data and / or metadata are maintained at a central site and at one or more remote sites. The network file manager switch at the remote site may satisfy certain client requests locally without having to contact the network file manager switch at the central site. A global namespace is maintained and is communicated to all network file manager switches.
Owner:RPX CORP
File aggregation in a switched file system
InactiveUS8195760B2Digital data information retrievalError detection/correctionFile systemGlobal file system
In a switched file system, a file switching device is logically positioned between clients and file servers and communicates with the clients and the file servers using standard network file protocols. The file switching device appears as a server to the client devices and as a client to the file servers. The file switching device aggregates storage from multiple file servers into a global filesystem and presents a global namespace to the client devices. The file switching device typically supports a “native” mode for integrating legacy files into the global namespace and an “extended” mode for actively managing files across one or more file servers. Typically, native-mode files may be accessed directly or indirectly via the file switching device, while extended-mode files may be accessed only through the file switching device. The file switching device may manage file storage using various types of rules, e.g., for managing multiple storage tiers or for applying different types of encoding schemes to files. Rules may be applied to pre-existing files.
Owner:RPX CORP
Method for constructing hierarchical catalogue based on consistent hashing data distribution
ActiveCN102819599AImplement a hierarchical directory structureEliminate single points of failureSpecial data processing applicationsNODALFile system
The invention discloses a method for constructing a hierarchical catalogue based on consistent hashing data distribution. The method includes the steps: connecting a physical storage server with a storage hardware device to form / data1- / dataX physical storage catalogues through a local file system, and virtually turning the different physical storage catalogues into different logic storage nodes through a storage software server terminal; enabling the logic storage nodes and the physical storage catalogues to be in one-to-one mapping, and adjusting according to needs to realize dynamic migration; taking a logic storage volume as a unit to mount a file system by a storage client, wherein the logic storage volume consists of one or multiple logic storage nodes; and providing a global namespace through an access layer and data distribution of the client to enable physical storage catalogues of the constructed catalogue hierarchy on the physical storage server to be completely consistent with the global namespace of the client. The method has the advantages that uniformity of bottom physical storage and an upper logic structure is achieved to realize a hierarchical catalogue structure; and complete distribution of catalogue hierarchy is realized, single point of failure can be eliminated, and the like.
Owner:华数传媒网络有限公司 +1
Method and apparatus for constructing a dht-based global namespace
InactiveUS20110072126A1Maximize system scalabilityDigital data information retrievalMultiple digital computer combinationsIp addressNetworked system
A DHT-based global namespace (GNS) is constructed for a network system that includes network attached storage (NAS) devices, including at least one DHT-NAS device (a NAS device having DHT Functionalities) and at least one Existing-NAS device (a NAS device lacking DHT Functionalities). In a DHT Overlay Construction Phase, the DHT-NAS devices construct a DHT overlay. In an Initial Phase, the GNS is created above share folders in the Existing-NAS devices, with mapping of the share folders in the Existing-NAS devices to GNS paths distributed to a key lookup table in the DHT-NAS devices. Each mapping in the key lookup table includes a key, a GNS path, NAS type, IP address of the NAS, and the path within the NAS Share. There is no central GNS mapping table. In a Discovery Phase, the DHT-NAS devices discover the Existing-NAS devices to construct the GNS under the share folders. In a Working Phase, the DHT-NAS devices service GNS requests.
Owner:HITACHI LTD
Metadata management method for NAS global namespace design
InactiveUS8458299B2Digital data information retrievalDigital computer detailsMetadata managementHeterogeneous network
Owner:HITACHI LTD
Mechanism for creating member private data in a global namespace
ActiveUS7672945B1Data processing applicationsSpecial data processing applicationsData miningData store
A system and techniques are described for creating member private data in a global namespace. According to one aspect, first data that is associated with a key is stored in a repository shared by multiple members. After the first data has been stored, second data that is associated with the key is stored without overwriting the first data. Mapping data is stored. The mapping data maps the key, relative to a first member, to a first data structure that stores the first data. The mapping data also maps the key, relative to a second member, to a second data structure that stores the second data. Based on the mapping data, the first member is allowed to access the first data and not the said second data. Based on the mapping data, the second member is allowed to access the second data and not the first data. The first data and the second data may include key values and subtrees of child keys.
Owner:ORACLE INT CORP
Intelligent data service method based on distributed system
ActiveCN102937964AReduce bandwidth requirementsSpecial data processing applicationsData as a serviceSmart data
The invention provides an intelligent data service method based on a distributed system. A master node of the distributed system is used for managing global file namespace; and in processes of writing files into the distributed system and reading files from the distributed system, the master node of the distributed system is used for analyzing and processing requests of clients, selecting specific data preprocessing programs, distributing the programs to slave nodes of the distributed system for subsequent data preprocessing and transmission. According to the intelligent data service method based on the distributed system, prior distributed system storage space can be clustered rapidly in data intensive application environments; computing resources of the distributed system are fully used, so that data services can be provided intelligently according to requests of external computing devices; and part of data processing loads are further transferred from external computing devices to the distributed system, and accordingly, bandwidth requirements for providing data services for external computing devices are reduced.
Owner:JIANGNAN INST OF COMPUTING TECH
Data Protection Cluster System Supporting Multiple Data Tiers
A hierarchical multi-level heterogeneous cluster data system having processing nodes at each of a plurality of cluster levels configured for different data tiers having different availability, accessibility and protection requirements. Each cluster level comprises groups of processing nodes arranged into a plurality of failover domains of interconnected nodes that exchange heartbeat signals to indicate that the nodes are alive and functioning. A master node of each failover domain is connected to a master node of a parent failover domain for exchanging heartbeat signals to detect failures of nodes at lower cluster levels. Upon a network partition, the nodes of the failover domain may be merged into another failover domain at the same or a higher cluster level to continue providing data services. The cluster has a global namespace across all cluster levels, so that nodes that are moved to different failover domains can be accessed using the same pathname.
Owner:EMC IP HLDG CO LLC
Computer code transformations to create synthetic global scopes
InactiveUS9015682B1Reduce global namespace pollutionPrevent namespace collisionInterprogram communicationSpecific program execution arrangementsCode moduleProcess module
Methods and systems for processing computer code modules in order to avoid polluting the global namespace. According to one embodiment, the system or method comprises a server that receives a request for an additional computer code module to be added to the namespace. Prior to delivering the module, the server processes the module by identifying all references to global symbols that are not to be explicitly exported to a global scope and moving the identified symbols to a synthetic namespace prior. The server further wraps the processed module in a function that receives the synthetic global scope as a parameter, and delivers the wrapped module to the requesting namespace.
Owner:GOOGLE LLC
Method and device for managing network attached storage
InactiveCN104754007AReduce response delayImprove data access efficiencyTransmissionData accessNetwork-attached storage
Owner:EMC CORP
DFS-oriented client persistent caching method and system in global namespace
ActiveCN110750507AEasy data managementReduce overheadDigital data information retrievalSpecial data processing applicationsDistributed File SystemFile system
The invention discloses a DFS-oriented client persistent caching method and system in a global namespace, and belongs to the field of large-scale distributed systems, and the method comprises the steps that a metadata server maintains a view of a global directory tree, all clients share the view, and all the clients can access any file through the view; the client identifies a file needing to be prefetched according to the cache prefetching rule, and migrates the file from the object storage server to the local for persistent caching; when the data volume of the local cache of the client exceeds a cache threshold, the data locally cached by the client is replaced; when the client performs file operation, if the to-be-operated file is cached to the local of the client and the client has thecorresponding operation authority, the locally cached file is directly accessed and the operation is finished; otherwise, the file is remotely accessed in the object storage server through the network and the operation is finished. According to the invention, the data management of the distributed file system can be simplified, and the network resource overhead is reduced.
Owner:HUAZHONG UNIV OF SCI & TECH
Method and system of frame forwarding with link aggregation in distributed ethernet bridges
Owner:AVAGO TECH INT SALES PTE LTD
Maintaining global namespace consistency for a distributed filesystem
The disclosed embodiments disclose techniques for maintaining global name consistency for a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in one or more cloud storage systems; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. During operation, a cloud controller receives a client request to perform a namespace operation upon a filesystem object. The cloud controller contacts the cloud controller that manages (“owns”) the portion of the global namespace for the distributed filesystem that includes the filesystem object. This second cloud controller ensures the consistency of the filesystem object across the distributed filesystem during the namespace operation.
Owner:PANZURA LLC
Method and system for global namespace with consistent hashing
ActiveCN104854551AInput/output to record carriersWebsite content managementConsistent hashingComputer science
A method for writing data to a storage pool. The method includes receiving a virtual identifier (ID) and an offset for an object, extracting a node identifier (ID) that identifies a first storage server in the storage pool from the virtual ID, obtaining an object layout (OL) for the object from the first storage server, hashing an object ID and an offset ID to obtain a hashed value, where the virtual ID comprises the object ID and where the offset ID is generated from the offset, identifying a second storage server in the storage pool using a global namespace layout (GL), the OL, and the hashed value, and issuing a write request to write data to the object in the second storage server, where the write request comprises the object ID and the offset.
Owner:EMC IP HLDG CO LLC
Method and apparatus for constructing a DHT-based global namespace
InactiveUS8296420B2Maximize system scalabilityDigital data information retrievalMultiple digital computer combinationsIp addressNetworked system
A DHT-based global namespace (GNS) is constructed for a network system that includes network attached storage (NAS) devices, including at least one DHT-NAS device (a NAS device having DHT Functionalities) and at least one Existing-NAS device (a NAS device lacking DHT Functionalities). In a DHT Overlay Construction Phase, the DHT-NAS devices construct a DHT overlay. In an Initial Phase, the GNS is created above share folders in the Existing-NAS devices, with mapping of the share folders in the Existing-NAS devices to GNS paths distributed to a key lookup table in the DHT-NAS devices. Each mapping in the key lookup table includes a key, a GNS path, NAS type, IP address of the NAS, and the path within the NAS Share. There is no central GNS mapping table. In a Discovery Phase, the DHT-NAS devices discover the Existing-NAS devices to construct the GNS under the share folders. In a Working Phase, the DHT-NAS devices service GNS requests.
Owner:HITACHI LTD
Efficient deduplication based file movement for load balancing in a scaled-out backup system
Embodiments for balancing cloud resource capacity for cross-node movement of files in a scaled out backup system, and for dynamically allocating cloud storage resources in a multi-node network having a file system. A process determines a destination node with dedicated cloud storage capable of storing a file selected for long term retention. It transfers the file to the cloud storage of the destination node while maintaining metadata of the file in the cloud tier local storage of the destination node, such as by using remote procedure calls between the destination and source nodes. It then updates a global namespace of the file system with a handle indicating a current location of the file as the cloud storage of the destination file, thus allowing access to the file through the metadata stored in the local storage of the source node.
Owner:EMC IP HLDG CO LLC
Systems and methods for providing protocol independent disjoint port names
A system and method for providing protocol independent disjoint port names for a session level restriction enabled information handling system utilizes a virtual USB device created at a host server when an input / output device is coupled to a remote client device. A symbolic link in global namespace is associated with the virtual USB device. If the symbolic link in global namespace begins with either “COM” or “LPT,” the symbolic link in global namespace is deleted and replaced with a port name symbolic link in user-session namespace based, at least in part, on the currently available port index in the user-session namespace.
Owner:DELL PROD LP
Intelligent data service method based on distributed system
ActiveCN102937964BReduce bandwidth requirementsSpecial data processing applicationsData as a serviceSmart data
Owner:JIANGNAN INST OF COMPUTING TECH
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