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Command Reference for Block

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado3000 V3, Dorado5000 V3, Dorado6000 V3 and Dorado18000 V3. Based on the CLI provided by the DeviceManager, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands.
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show performance snapshot

show performance snapshot

Function

The show performance snapshot command is used to query the performance statistics on a snapshot task. Run this command to analyze the performance statistics on a snapshot task in real time.

Format

show performance snapshot [ snapshot_id=? ] [ snapshot_id_list=? ]

Parameters

Parameter

Description

Value

snapshot_id=?

ID of a snapshot task on which you want to query performance statistics.

To obtain the value, run "show snapshot general".

snapshot_id_list=?

List of snapshot task IDs on which you want to query performance statistics.

  • To obtain the value, run "show snapshot general".
  • Separate the snapshot task IDs with commas (,) or hyphens (-).
  • A maximum of 50 IDs can be queried.

Level

Guest

Usage Guidelines

  • You will be prompted with optional performance statistics categories upon running this command. In this condition, typing a number or multiple numbers (separated by commas) for the selected categories and pressing "Enter" display the performance statistics for those categories.
  • Performance statistics will be updated in real time.
  • Typing "q" on the command line interface (CLI) exits the active performance statistics display.

Example

Query the performance statistics on the reads for snapshot task "7".

admin:/>show performance snapshot snapshot_id=7 
0.Read requests to the snapshot LUN                                     1.Read requests redirected to the source LUN                             
2.Write requests to the snapshot LUN                                    3.Write requests insufficient for the grain size to the snapshot LUN     
Input item(s) number separated by comma:1 

  Read requests redirected to the source LUN : 0

System Response

The following table describes the parameter meanings.

Parameter

Meaning

Read requests to the snapshot LUN

Number of read requests to the snapshot LUN.

Read requests redirected to the source LUN

Number of read requests redirected to the snapshot LUN.

Write requests to the snapshot LUN

Number of write requests to the snapshot LUN.

Write requests insufficient for the grain size to the snapshot LUN

Number of write requests insufficient for the grain size to the snapshot LUN.

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Updated: 2019-07-16

Document ID: EDOC1100049140

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