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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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show pair log_ctrl

show pair log_ctrl


The show pair log_ctrl command is used to query the number of concurrent dual-write I/Os and waiting I/Os of a pair module.


show pair log_ctrl [ controller=? ]





controller=? Controller ID.

The value is in the format of "XA" or "XB" or "XC" or "XD", where the "X" is an integer ranging from 0 to 3, for example: "0A", "1C".


Developer view

Usage Guidelines

The command is executed on the local controller by default.


Querying the number of concurrent dual-write I/Os and waiting I/Os of the current pair module.

developer:/>show pair log_ctrl
Total Count  Current Count  Object ID  Logic Address  Length  Operate Code  Flying Count  Code Flag       
  -----------  -------------  ---------  -------------  ------  ------------  ------------  --------------  
  85           0              14         497568         1       320962560     1             PAIR_TYPE_NONE  
  85           0              12         497957         1       320962560     1             PAIR_TYPE_NONE  
  85           0              13         497945         1       320962560     1             PAIR_TYPE_CLN   
  85           0              13         497948         1       320962560     1             PAIR_TYPE_CLN   
  85           0              13         497952         1       320962560     1             PAIR_TYPE_CLN   
  85           0              13         497947         1       320962560     1             PAIR_TYPE_CLN   
  85           0              15         497560         1       320962560     1             PAIR_TYPE_CLN   
  85           0              15         497565         1       320962560     1             PAIR_TYPE_CLN

System Response

The following table describes the parameter meanings.



Total Count

Maximum number of dual-write I/Os supported by the system.

Current Count

Number of available concurrent dual-write I/Os.

Object ID

ID of the accessed object.

Logic Address

Accessed start sector.


Start sector of access.

Operate Code

Operation code of an I/O.

Flying Count

Count of references.

Code Flag

Operation type of an I/O.

Updated: 2020-01-17

Document ID: EDOC1000181602

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