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Advanced O&M Command Reference

OceanStor 2000, 5000, and 6000 V3 Series V300R006

This document is applicable to OceanStor 2200 V3, 2600 V3 Video Surveillance Edition, 2600 V3, 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3. Based on the CLI, 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. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions.
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pair showpairio

pair showpairio

Function

The pair showpairio command is used to query the host I/O list and dual-write I/O list on a specified LUN.

Format

pair showpairio lunid

Parameters

Parameter

Description

Value

lunid

LUN ID.

To obtain the value, run "show lun general" as the administrator.

reqType

I/O type to be displayed.

  • "1": displays a host I/O list.
  • "2": displays a dual-write I/O list.

Views

Diagnostic view

Usage Guidelines

  • This command must be executed on the working controller of a LUN.
  • When "reqType" is set to "1", a host I/O list is displayed. When "reqType" is set to "2", a dual-write I/O list is displayed.

Example

  • Query the host I/O list on a specified LUN.
    ibc_os_hs:/diagnose>pair showpairio 0 1 
     Num objId      objLba   len opCode     result     PreCnt     PostCnt QueueCnt SetDclCnt  SetDclRet  Flag timePoint        logId            reqType 
     ------ ---------- ---------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---- ---------------- ---------------- -------
  • Query the dual-write I/O list on a specified LUN.
    ibc_os_hs:/diagnose>pair showpairio 0 2 
     Num objId      objLba     len opCode     result     PairType Flag     PairStatus DclId      WaitingCnt ChunkNum QueueFlag  WaitCkCnt  FlyingCnt  PostCnt PairId     SrcLun     DstLun     Status 
     ------ ---------- ---------- ------ ---------- ---------- -------- -------- ---------- ---------- ---------- ----------  ---------- ---------- ---------- ---------- ---------- ---------- ---------- ------

System Response

The following table describes the parameter meanings.

Parameter

Meaning

num

I/O number.

objId

LUN ID corresponding to an I/O.

PostCnt

Number of REQs that are processing dual-write.

PreCnt

Count of write preprocessing.

result

I/O result.

opCode

Command word corresponding to an I/O.

objLba

LBA offset corresponding to an I/O (unit: sector).

len

I/O length (unit: sector).

QueueCnt

Count of deleting dual-write REQ from a queue.

SetDclCnt

Count of writing DCL in postprocessing.

SetDclRet

Result of writing DCL in postprocessing.

Flag

Status of the source REQ.

timePoint

Point in time of an I/O.

logId

ID of a log in the log zone.

reqType

I/O object type (LUN or file system).

PairType

Pair type.

PairStatus

Pair status when an I/O is delivered.

DclId

DCL ID of a pair.

WaitingCnt

Count of I/Os that have been delivered.

PairId

Pair ID.

SrcLun

Source LUN ID of a pair.

DstLun

Target LUN ID of a pair.

Status

Current status of a pair.

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Updated: 2019-07-12

Document ID: EDOC1000138402

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