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HyperClone Feature Guide for File

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado5000 V3, Dorado6000 V3, and Dorado18000 V3. It describes the implementation principles and application scenarios of the HyperClone feature (for file), and explains how to configure and manage HyperClone.
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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).
Splitting a Clone File System

Splitting a Clone File System

You can perform splitting operations to obtain a complete physical copy of a clone file system. If the parent file system is damaged, its data can be recovered from the clone file system that is split.

Prerequisites

  • A clone file system exists in the storage system.
  • You can split a clone file system when the following conditions are met: Health Status and Running Status of both the parent file system and clone file system are Normal and Online respectively, and Split Status of the clone file system is Not started or Abnormal end.

Context

During splitting, services on the parent and clone file systems will not be affected. The splitting time depends on the size of the data source shared by the parent file system.

Precautions

  • A clone file system cannot be split if it has a child clone file system.
  • Before a clone file system is split, the snapshot of the parent file system used for clone cannot be deleted and the parent file system cannot be rolled back to the point in time before the snapshot was taken.
  • After splitting starts, data written from application servers to the parent file system will not be synchronized to the clone file system.
  • If snapshots are created for a clone file system before splitting, the snapshots will be deleted after the splitting is complete.

Procedure

  1. Go to the user interface of clone file systems in vStore.

    The operation path varies with user types:

    • System user: Click vStore, select the desired vStore, and click Details to go to the vStore view. Choose Data Protection > Clone.
    • vStore user: In the vStore view, choose Data Protection > Clone.

  2. Select a clone file system you want to split.

    1. In the left file system tree, select the parent file system of the clone file system you want to split.
    2. On the right, select the clone file system you want to split.
    NOTE:

    A storage system supports concurrent splitting of multiple clone file systems.

  3. Split the clone file system.

    1. Click Split.
      NOTE:

      You can also right-click the clone file system and choose Split from the shortcut menu.

      When you select a single clone file system to split, the Split xxx dialog box is displayed (xxx: name of the clone file system).

      When you select multiple clone file systems to split, the Split dialog box is displayed.

    2. Set the Split Speed. The default value is Medium.
      • Low: The speed is normally from 0 MB/s to 50 MB/s. Splitting will be completed in the longest period. This value is applicable when the service load is heavy.
      • Medium: The speed is normally from 50 MB/s to 100 MB/s. Splitting will be completed in the long period. This value is applicable when the service load is relatively heavy.
      • High: The speed is normally from 100 MB/s to 200 MB/s. Splitting will be completed in the short period. This value is applicable when the service load is relatively light.
      • Highest: The speed is normally above 200 MB/s. Splitting will be completed in the shortest period. This value is applicable when the service load is light.
    3. Select or deselect Delete associated snapshots of the parent file system.
      • Selected: If a snapshot is created by a user and used by this clone file system only, the snapshot will be deleted. If a snapshot is being used by other features or clone file systems, the snapshot will be retained.
      • Unselected: The snapshot will be retained.
    4. Click OK.

      The security alert dialog box is displayed.

    5. Confirm the information in the dialog box and select I have read and understand the consequences associated with performing this operation.
    6. Click OK.

      The Execution Result dialog box is displayed, indicating that the operation is successful.

    7. Click Close.

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Updated: 2019-02-22

Document ID: EDOC1100067321

Views: 3040

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