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Advanced O&M Command Reference

OceanStor 2800 V5 V500R007

This document is applicable to OceanStor 2800 V5. 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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devlun showunmapctrlinfo

devlun showunmapctrlinfo

Function

The devlun showunmapctrlinfo command is used to query unmap control information.

Format

devlun showunmapctrlinfo

Parameters

None

Views

Diagnostic view

Usage Guidelines

None

Example

Query unmap control information.

admin:/diagnose>devlun showunmapctrlinfo
Unmap Time Ctrl Info
  timerId                  :  113       
  highWaterLevel           :  70        
  lowWaterLevel            :  40        
  delayTimeForHigh (ms)    :  100       
  delayTimeForLow (ms)     :  50        
  delayTimeForLessLow (ms) :  5         
  maxDelayTime (ms)        :  500       
  hostIoPeriod (s)         :  5         
  timeout (s)              :  20        
  isRunning                :  False
  isSwitchOn               :  False
Unmap Io Count Info
  enqueueNum             :  0         
  dequeueNumNormal       :  0         
  dequeueNumTimeout      :  0         
  dequeueNumSwitchOff    :  0         
  dequeueNumHangOrStop   :  0         
  delayTimeForHighNum    :  0         
  delayTimeForLowNum     :  0         
  delayTimeForLessLowNum :  0         
  maxDelayTimeNum        :  0         
Unmap Global Info
  unmapRatio             :  0

System Response

The following table describes the parameter meanings.

Parameter

Meaning

timerId

Timer ID.

highWaterLevel

Inventory high watermark.

lowWaterLevel

Inventory low watermark.

delayTimeForHigh

Delayed scheduling period for unmap I/Os when the inventory reaches the high watermark.

delayTimeForLow

Delayed scheduling period for unmap I/Os when the inventory reaches the low watermark.

delayTimeForLessLow

Delayed scheduling period for unmap I/Os when the inventory is lower than the low watermark.

maxDelayTime

Maximum delayed scheduling period.

hostIoPeriod

Host I/O detection period.

timeout

Timeout period of the unmap I/O queue.

isRunning

Whether the background task is being executed.

isSwitchOn

Whether to enable the unmap delay switch.

enqueueNum

Total number of I/Os entering the queue.

dequeueNumNormal

Number of I/Os exiting the queue normally.

dequeueNumTimeout

Number of I/Os exiting the queue due to timeout.

dequeueNumSwitchOff

Number of I/Os exiting the queue after disabling the unmap delay switch.

dequeueNumHangOrStop

Number of I/Os exiting the queue due to suspension or pausing.

delayTimeForHighNum

Number of unmap I/Os when the inventory reaches the high watermark.

delayTimeForLowNum

Number of unmap I/Os when the inventory reaches the low watermark.

delayTimeForLessLowNum

Number of unmap I/Os when the inventory reaches the ultra-low watermark.

maxDelayTimeNum

Number of I/Os for which the delayed scheduling period reaches the maximum.

unmapRatio

Occupation percentage of unmap I/Os.

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Updated: 2020-01-17

Document ID: EDOC1000181575

Views: 725613

Downloads: 32

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