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Advanced O&M Command Reference

OceanStor 2800 V3 V300R006

This document is applicable to OceanStor 2800 V3. 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. 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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change disk_reliability_policy slow_disk_detect

change disk_reliability_policy slow_disk_detect

Function

The change disk_reliability_policy slow_disk_detect command is used to set related parameters of slow disk detection.

Format

change disk_reliability_policy slow_disk_detect switch=? [ isolate_diagnose_switch=? threshold_multiple=? minor_cycle_time=? slow_cycle_count=? permit_slow_disk_count=? min_threshold_value=? max_threshold_value=? permit_slow_disk_time=? ]

Parameters

Parameter

Description

Value

switch

Switch of the slow disk detection function.

The value is "on" or "off", where:

  • "on": enables the detection function.
  • "off": disables the detection function.

isolate_diagnose_switch

Switch of the isolation diagnosis feature.

The value is "on" or "off", where:

  • "on": enables the isolation diagnosis feature.
  • "off": disables the isolation diagnosis feature.

threshold_multiple

Threshold multiplier for determining slow disks.

The value is an integer from 2 to 20.

minor_cycle_time

Short period (unit: s).

The value is an integer from 1 to 60.

slow_cycle_count

Number of slow periods.

The value is an integer from 5 to 24.

permit_slow_disk_count

Maximum number of slow disks allowed to be reported within a period.

The value is an integer from 1 to 5.

min_threshold_value

Minimum threshold for determining mean service time of slow periods (unit: ms).

The value is an integer from 1 to 50.

max_threshold_value

Maximum threshold for determining mean service time of slow periods (unit: ms).

The value is an integer from 1 to 1000.

permit_slow_disk_time

Period of slow disks allowed to be reported (unit: day).

The value is an integer from 1 to 1098.

Views

Developer view

Usage Guidelines

None

Example

Enable the slow disk detection function, disable the isolation diagnosis feature, and set the following parameters: threshold multiplier for determination to 10, each short period to 5s, number of slow periods to 6, maximum number of slow disks allowed to be reported in periods to 1, minimum threshold for determining mean service time of slow periods to 2 ms, maximum threshold for determining mean service time of slow periods to 50 ms, and period of slow disks allowed to be reported to 30 days.

developer:/>change disk_reliability_policy slow_disk_detect switch=on isolate_diagnose_switch=off threshold_multiple=10 minor_cycle_time=5 slow_cycle_count=6 permit_slow_disk_count=1 min_threshold_value=2 max_threshold_value=50 permit_slow_disk_time=30 
DANGER: You are about to modify parameters for checking slow disks. This operation may cause system abnormality. 
Suggestion: Before performing this operation, note the following: 
1. Ensure that this command is run by the R&D engineers. 
2. This command is effective on all controllers. Running this command affects the system's check on the slow disks. Therefore, the system reliability is affected. 
3. After running this command, check whether the system is running properly. 
Have you read danger alert message carefully?(y/n)y 

Are you sure you really want to perform the operation?(y/n)y 
Command executed successfully. 

System Response

None

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Updated: 2019-07-12

Document ID: EDOC1000138381

Views: 670569

Downloads: 36

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