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unmount storage volume

A technology for storing volumes and storage media, applied in instrumentation, error detection/correction, computing, etc., which can solve problems such as file system inconsistency, auxiliary application programs that cannot be uninstalled, and write errors, etc.

Active Publication Date: 2017-12-26
SYMANTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, secondary applications are not under the control of the cluster software and therefore may have open files on storage volumes
In these cases, the secondary application may fail to unmount or forcefully unmount from the storage volume, which may result in write errors which in turn may lead to file system inconsistencies

Method used

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Embodiment Construction

[0020] Reference will now be made in detail to the various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. While described in conjunction with these embodiments, it will be understood that they are not intended to limit the disclosure to these embodiments. On the contrary, the disclosure is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the disclosure as defined by the appended claims. Moreover, in the following detailed description of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it is understood that the present disclosure may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

[0021...

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PUM

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Abstract

In response to an instruction to dismount a storage volume, for example, an object in the storage volume is identified and a handle that references the object is closed. Once an exclusive lock on the storage volume is acquired, the storage volume can be dismounted. The storage volume can then remounted.

Description

Background technique [0001] In a cluster network (for example, a server cluster), multiple entities, such as computer systems and the applications running on those systems, can all access the same storage volumes. Some of those applications (referred to in this article as the main application) are heavily used. Other applications are referred to herein as secondary applications. [0002] The main application may become unexploitable for any of a variety of reasons. For example, a server (on which an application executes) may become unavailable, in which case the application is also unavailable until the server's service is restored. To resolve this situation, the application is restarted on a different server as quickly as possible, a process known as failover. [0003] To transfer the execution of the main application from one server to another, the storage volume used by the application is unmounted (essentially, taking the storage volume offline), then remounted (essenti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G06F11/14
CPCG06F11/2028G06F11/2038G06F11/2046G06F2201/825
Inventor S·S·曼莫汉M·L·德希穆克
Owner SYMANTEC CORP