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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 remote_device degrade_param

change remote_device degrade_param


The change remote_device degrade_param command is used to set parameters for degrading a replication links between private disk arrays.


change remote_device degrade_param remote_device_id=? degrade_switch=? [ time_out_threshold=? ] [ io_error_threshold=? ] [ degrade_period=? ] [ recover_period=? ] [ detect_msg_size=? ]





remote_device_id Remote device ID.

The value ranges from 0 to 511.

degrade_switch Degrade switch.


degrade_period Degrade period.

The value ranges from 1 to 6000, (Unit: s).

recover_period Degrade recovery period.

The value ranges from 2 to 30000, which should be greater than the degrade period. (Unit: s).

io_error_threshold Degrade threshold of error I/Os.

The value ranges from 1 to 2000.

time_out_threshold Degrade threshold of I/O timeout.

The value ranges from 1 to 500.

detect_msg_size Size of packets detected after link degrade.

The value ranges from 4 to 1024.


Developer view

Usage Guidelines

The parameters for degrading a replication link are changed based on the actual network to accurately identify and degrade the faulty link.


Change the switch and parameters for degrading the replication link.

developer:/>change remote_device degrade_param remote_device_id=0 degrade_switch=on time_out_threshold=5 io_error_threshold=20 degrade_period=60.
Command executed successfully.

System Response


Updated: 2020-01-17

Document ID: EDOC1000181602

Views: 750700

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