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Synchronizing updates across cluster filesystems

A file system and file system operation technology, which is applied in the field of synchronously updating data and can solve problems such as disconnection

Active Publication Date: 2014-07-23
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that network connectivity between the source and target sites may experience temporary disconnections

Method used

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  • Synchronizing updates across cluster filesystems
  • Synchronizing updates across cluster filesystems
  • Synchronizing updates across cluster filesystems

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Embodiment Construction

[0019] It should be readily understood that the components of the invention as generally described and illustrated in the drawings herein can be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of embodiments of the devices, systems and methods of the invention as presented in the drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

[0020] The functional units described in this specification have been denoted as managers. The manager may be implemented in a programmable hardware device such as a field programmable gate array, programmable array logic, programmable logic device, or the like. The manager may also be implemented in software for processing by various types of processors. An identified manager of executable program code may, for example, comprise one or more physical or logical blocks of computer instructi...

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Abstract

Embodiments of the invention relate to synchronization of data in a shared pool of configurable computer resources. An image of the filesystem changes, including data and metadata, is captured in the form of a consistency point. Sequential consistency points are created, with changes to data and metadata in the filesystem between sequential consistency captured and placed in a queue for communication to a target filesystem at a target site. The changes are communicated as a filesystem operation, with the communication limited to the changes captured and reflected in the consistency point.

Description

Background technique [0001] The invention relates to data synchronization across cluster file systems. More specifically, the invention relates to tracking changes in a file system and replaying the changes to another file system using standard protocols. [0002] In a scalable and writable caching system that caches remote file data, the data is retrieved from the remote site and updated at the cache site (also known as the source site) and replayed at the remote site (also known as the target site) . It is known that network connectivity between the source and target sites may experience temporary disconnections. When a disconnect between two sites occurs, the origin site should still be available to access previously cached data, and thus, the origin site continues to support data and metadata updates. At this point, data and metadata updates need to be synchronized with the target site as connectivity between the two sites is restored. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/178G06F16/2365G06F16/2379G06F11/1471
Inventor K·古普塔M·P·耐克F·B·施穆克M·A·沙阿R·特瓦里
Owner IBM CORP
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