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Basic Storage Service Guide for File 16

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

"This document describes the basic storage services and explains how to configure and managebasic storage services."
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Modifying Advanced Properties of a File System

Modifying Advanced Properties of a File System

This operation enables you to modify advanced properties of a file system.

Prerequisites

At least one file system is created.

Procedure

  1. Log in to DeviceManager.
  2. Choose Provisioning > File System.
  3. Select a file system whose advanced properties you want to modify and click Properties.

    The File System Properties dialog box is displayed.

  4. Change advanced properties of the file system.
    1. Select Advanced in the More tab.
    2. Change advanced properties of the file system. Table 5-4 describes related parameters.

      Table 5-4  Advanced properties of a file system

      Parameter

      Description

      Value

      Capacity Alarm Threshold (%)

      Alarm threshold of the file system capacity.

      [Value range]

      The value is an integer ranging from 50 to 95.

      [Example]

      90

      [Default]

      90

      Snapshot Directory Visibility

      Specifies whether snapshot directories are visible.

      [Value range]

      The value can be Visible or Invisible.

      [Example]

      Visible

      [Default]

      Visible

      Snapshot Space Ratio (%)

      Space ratio of the file system snapshot.

      [Value range]

      The value is an integer ranging from 0 to 50.

      [Example]

      20

      [Default]

      20

      Max. Number of Timing Snapshots

      Upper limit of the file system timing snapshots. When the number of created snapshots reaches the upper limit, the system automatically deletes the earliest timing snapshots.

      [Value range]

      The value is an integer ranging from 1 to 2048.

      [Example]

      16

      [Default]

      16

      Delete Obsolete Read-Only Snapshots

      Specifies whether Delete Obsolete Read-Only Snapshots is enabled. When used space of a file system reaches the Capacity alarm threshold and used space of snapshots is larger than reserved space for snapshots, the system automatically deletes the earliest read-only snapshots.

      [Example]

      Enable

      [Default]

      Disable

      Checksum

      Specifies whether Checksum is enabled. This function is used to check data integrity. When it is enabled, checksum will be automatically calculated when data is being written, ensuring integrity of the data to be accessed.

      [Example]

      Enable

      [Default]

      Enable

      Automatic Update of Atime

      Specifies whether Automatic Update of Atime is enabled. Atime is a time when file systems are accessed. After this function is enabled, Atime will be updated every time data on file systems is accessed.

      [Example]

      Enable

      [Default]

      Disable

    3. Click OK.

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

  5. Click Close.
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Updated: 2019-08-14

Document ID: EDOC1000084198

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