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OceanStor 9000 V300R006C00 File System Feature Guide 12

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Working Principles

Working Principles

This section describes the working principles of UniformView.

Related Concepts

  • Portable Operating System Interface (POSIX)

    A series of application programming interface (API) standards defined by IEEE for software running in UNIX. POSIX is formally designated as IEEE 1003 and the international standard name is ISO/IEC 9945.

  • Protocol server/CA

    An internal software module of the OceanStor 9000 that parses NAS protocols and processes file read/write requests.

UniformView Principle

During the UniformView installation, the user can specify a directory as the mounting root directory of UniformView. If the directory is not specified, /mnt/UniformView is used by default. An administrator runs the mounting command on the UniformView client to mount storage domains using mounting names and dynamic IP addresses. UniformView parses the mounting command and creates directories named after mounting names in the mounting root directory in sequence. Every mounting name must be unique; otherwise, the directories fail to be created. At the same time, the NFS protocol is used to mount the specified shared directories to the directories named after mounting names in read-only mode through management IP addresses. The architecture is shown in Figure 10-2.


Every cluster ID is unique. You are advised to use cluster IDs as mounting names.

Figure 10-2  UniformView architecture

After storage domains are mounted to UniformView, the monitoring platform can access files in the shared directories of storage domains using POSIX interfaces. Implementation procedure is shown in Figure 10-3.

Figure 10-3  Procedure of accessing files in shared directories
  1. The monitoring platform uses POSIX interfaces to access files in UniformView.
  2. UniformView uses the NFS protocol to send file read requests to the protocol server/CA of OceanStor 9000 storage domains.
  3. CA uses private interfaces to access objects of storage clusters.
  4. Storage domains process the requests internally.
  5. Storage domains return data to the protocol server/CA.
  6. The protocol server/CA returns data to UniformView.
  7. UniformView returns data to the monitoring platform.
Updated: 2019-06-27

Document ID: EDOC1000122519

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