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Advanced O&M Command Reference

OceanStor 5000, 5000F, 6000, and 6000F V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5110F V5, 5300 V5, 5500 V5, 5600 V5, 5800 V5, 6800 V5, 5300F V5, 5500F V5, 5600F V5, 5800F V5, and 6800F V5. Based on the CLI, this document describes how to use various commands classified by functionsand how to set the CLI and manage the storage system through these commands.
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change cache dsg_poolconcur_watermark

change cache dsg_poolconcur_watermark

Function

The change cache dsg_poolconcur_watermark command is used to set the concurrency watermarks for the pool in the layer-2 cache flushing.

Format

change cache dsg_poolconcur_watermark flow_type=? concur_type=? pool_id=? water_no=? water_low=? water_mid=? water_high=?

Parameters

Parameter

Description

Value

flow_type=?

I/O type.

The value can be "random" or "sequence", where:

  • "random": random I/Os.
  • "sequence": sequential I/Os.

concur_type=?

Concurrency type.

The value can be "req" or "page", where:

  • "req": The concurrency type is REQ.
  • "page": The concurrency type is PAGE.

pool_id=?

Pool ID.

The value is an integer ranging from 0 to 128.

NOTE:

This parameter indicates the selected pool ID.

water_no=?

Zero watermark.

The value is an integer ranging from 1 to 2097152.

NOTE:

This parameter indicates the value set for the zero watermark.

water_low=?

Low watermark.

The value is an integer ranging from 1 to 2097152.

NOTE:

This parameter indicates the value set for the low watermark.

water_mid=?

Medium watermark.

The value is an integer ranging from 1 to 2097152.

NOTE:

This parameter indicates the value set for the medium watermark.

water_high=?

High watermark.

The value is an integer ranging from 1 to 2097152.

NOTE:

This parameter indicates the value set for the high watermark.

Views

Developer view

Usage Guidelines

You can run this command to set the concurrency watermarks for the pool in the layer-2 cache flushing module.

NOTE:

This command must be executed on the current controller.

Example

Set the type of concurrent I/Os for the pool in the layer-2 cache flushing to "sequence" and concurrency type to "page". For the pool whose ID is "0", the zero watermark is "1", the low watermark is "20", the medium watermark is "50", and the high watermark is "80".

developer:/>change cache dsg_poolconcur_watermark flow_type=sequence concur_type=page pool_id=0 water_no=1 water_low=20 water_mid=50 water_high=80 
WARNING: You are about to modify the cache flushing watermarks. This operation may affect the system performance.  
Suggestion: Before performing this operation, ensure that the new cache flushing watermarks are correct. 
Have you read warning message carefully?(y/n)y 
Are you sure you really want to perform the operation?(y/n)y 
Command executed successfully.

System Response

None

Translation
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Updated: 2019-07-11

Document ID: EDOC1000181619

Views: 634052

Downloads: 253

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