Oracle International Corporation

Sun Microsystems, Inc.

Gavin G Gibson

Mark Maybee

James Kremer

Pascal Ledru

John D Acton

Michael D Derbish

Hugh M Humphreys

William B DeRolf

Steven E Schelong

Steven P Kent

Jack M Hardy, Jr

Ricardo Yong

Victor Latushkin

Ankit Gureja

Christian Cadieux

Kimberly Morneau

Natalie Ross

Sam Gibson

Yuan Zhang

Sudha Verma

Paula C Kiser

Christopher Horne

Todd H McKenney

Jinfei Zhang

Stephen Brooks

Yidong Zhang

Jingfei Zhang

Robert Johnston

Todd McKenney

Stephen Hanson

James Kramer

Techniques described herein relate to systems and methods of data storage, and more particularly to providing layering of file system functionality on an object interface. In certain embodiments, file system functionality may be layered on cloud object interfaces to provide cloud-based storage while allowing for functionality expected from a legacy applications. For instance, POSIX interfaces and semantics may be layered on cloud-based storage, while providing access to data in a manner consistent with file-based access with data organization in name hierarchies. Various embodiments also may provide for memory mapping of data so that memory map changes are reflected in persistent storage while ensuring consistency between memory map changes and writes. For example, by transforming a ZFS file system disk-based storage into ZFS cloud-based storage, the ZFS file system gains the elastic nature of cloud storage.

File system hierarchies and functionality with cloud object storage

ZFS block-level deduplication and duplication at cloud scale

File system hierarchy mirroring across cloud data stores

Techniques described herein relate to systems and methods of data storage, and more particularly to providing layering of file system functionality on an object interface. In certain embodiments, file system functionality may be layered on cloud object interfaces to provide cloud-based storage while allowing for functionality expected from a legacy applications. For instance, POSIX interfaces and semantics may be layered on cloud-based storage, while providing access to data in a manner consistent with file-based access with data organization in name hierarchies. Various embodiments also may provide for memory mapping of data so that memory map changes are reflected in persistent storage while ensuring consistency between memory map changes and writes. For example, by transforming a file system disk-based storage into cloud-based storage, the file system gains the elastic nature of cloud storage.

Efficient incremental backup and restoration of file system hierarchies with cloud object storage

ZFS block-level deduplication at cloud scale

Cloud gateway for ZFS snapshot generation and storage

Compression and secure, end-to-end encrypted, ZFS cloud storage

Utilities (e.g., methods, systems, apparatuses, etc.) for use in automatically identifying improper physical connections in storage networks and recommending particular actions (e.g., changes to existing physical connections) that seek to ensure symmetric and redundant connections from a data host through all associated storage enclosures and reduce the likelihood that single failures prevent access to storage system data.

Redundant cable routing management in storage systems

In some embodiments, a computer accessible medium comprises a plurality of instructions which, when executed, probe nodes in a network to determine if one or more nodes are experiencing any events indicative of a fault. The nodes are probed in a sequence. The instructions, when executed, in response to receiving a first alert transmitted by a first node in the network asynchronous to the probes performed according to the sequence, probe one or more neighbor nodes of the first node. In some other embodiments, the instructions, when executed, in response to receiving a first alert transmitted by a first node in the network asynchronous to the probes performed according to the sequence, interrupt probing according to the sequence to probe at least the first node.

Fault isolation in large networks

Provided are a method, system and article of manufacture for fault determination. A duration of time is determined for receiving an event. A plurality of events are received in a time period that is at least twice the determined duration. A plurality of factors are determined corresponding to the plurality of events. At least one factor is determined from the plurality of factors, wherein the at least one factor is a cause of at least one of the plurality of events.

Method, system, and article of manufacture for fault determination

Methods, systems and programs for isolating faults in a network loop is described. The link between the last device and the initiator in the network loop is tested. The loop segment between the initiator and the last device in the network loop is testesd. If a faulty link is identified in the loop segment between the initiator and the last device, then a faulty loop segment is identified and the faulty link within the faulty loop segment is isolated. For various embodiment of the present invention, divide and conquer testing or other systematic testing methods may be used to isolate the faulty link.

Method and apparatus for fault isolation on network loops

Methods, systems and programs for isolating faults in a network loop are described. A single write and multiple read test is performed on the last device in a network loop to determine whether the link between the last device and the initiator is a faulty link. A multiple write test is performed on the last device to determine whether the loop segment between the initiator and the last device includes at least one faulty link. If a write error is identified, then the low level error counters of each network device are monitored. The network device with the updated error counter is identified such that the device before that network device in the network loop is selected as the first test device to be used in isolating a faulty link between the initiator and the last device.

Method and apparatus for fault isolation on network loops using low level error counters

Growing community of inventors

Washington, CO, United States of America

Gavin G Gibson