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Advanced O&M Command Reference

OceanStor 18000 and 18000F V5 Series V500R007

This document is applicable to OceanStor 18500 V5, 18800 V5, 18500F V5, and 18800F 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 dsgact_concur

change cache dsgact_concur


The change cache dsgact_concur command is used to set the concurrent number of requests for cache global object cache flushing.


change cache dsgact_concur cache_layer=? concur_type=? reqnum=? pagenum=?





cache_layer=? Cache layer.

The value can be "volume_cache" or "stripe_cache", where:

  • "volume_cache": layer-1 cache or volume cache.
  • "stripe_cache": layer-2 cache or stripe cache.
concur_type=? Type of concurrent requests.

The value can be "normal", "write_through", or "all", where:

  • "normal": normal cache flushing.
  • "write_through": write-through cache flushing.
  • "all": all types of cache flushing.
pagenum=? Number of concurrent pages.

The value ranges from 1 to 262,1440.

The value indicates the number of concurrent cache flushing pages.

reqnum=? Number of concurrent requests.

The value ranges from 1 to 8192.

The value indicates the number of concurrent cache flushing requests.


Developer view

Usage Guidelines

Set the actual number of concurrent requests and pages for cache flushing of layer-1 or layer-2 cache global objects.


Set the number of concurrent requests for stripe cache global objects' normal cache flushing and write-through cache flushing to "32" and "65535" respectively.

developer:/>change cache dsgact_concur cache_layer=stripe_cache concur_type=all reqnum=256 pagenum=65535
WARNING: You are about to change the number of concurrent requests and pages of cache global object flushing. This operation may affect the system performance. 
Suggestion: Before performing this operation, ensure that the number of concurrent requests and pages needs to be changed.
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


Updated: 2020-01-17

Document ID: EDOC1000181602

Views: 758349

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