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OceanStor 2200 V3 and 2600 V3 Storage System V300R005 Command Reference

"Based on the CLI provided by the DeviceManager, this document describes how to use variouscommands classified by functions and how to set the CLI and manage the storage system throughthese commands."
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change consistency_group general

change consistency_group general

Function

The change consistency_group general command is used to modify consistency groups.

Format

change consistency_group general consistency_group_id=? { compress_enable=? | name=? | recovery_policy=? | synchronization_rate=? | synchronization_type=? [ timing_length=? timing_unit=? ] | second_res_access=? | remote_io_timeout_period=? } *

Parameters

Parameter

Description

Value

consistency_group_id=? ID of a consistency group.

To obtain the value, run "show consistency_group general".

name=? An updated name of a consistency group.

The value contains 1 to 31 ASCII characters including digits, letters, hyphens (-), underscores (_), and periods (.),and can only start with a digit or a letter.

recovery_policy=? Link recovery policy. This parameter defines a policy for recovering the links that are unexpectedly disconnected for the remote replication tasks in a consistency group.

The value can be:

  • "automatic": When links are recovered, the remote replication tasks in the consistency group are resumed automatically.
  • "manual": When links are recovered, the remote replication tasks in the consistency group need to be resumed manually. The consistency group retains the state preserved at the time when links are interrupted, and does not resume the interrupted remote replication tasks automatically.
The default value is "automatic".
synchronization_rate=? New synchronization rate.

The value can be

  • "Low": indicates the low rate.
  • "Middle": indicates the medium rate.
  • "High": indicates the high rate.
  • "Highest": indicates the highest rate.
The default value is "Middle".
synchronization_type=? New synchronization type. This parameter is valid only when the consistency group type is "asynchronous".

The value can be:

  • "manual": Data needs to be synchronized manually.
  • "auto_start_timing": When a data synchronization job is started, the storage system waits for a period specified by synchronization_interval before implementing the next synchronization job.
  • "auto_end_timing": When a data synchronization job is completed, the storage system waits for a period specified by synchronization_interval before implementing the next synchronization job.
timing_length=? Timing period. This parameter is valid only when synchronization_type=? is set to "timed_wait_when_synchronization_begins" or "timed_wait_when_synchronization_ends".
  • The value ranges from 1 to 1440, expressed in minutes.
  • The value ranges from 10 to 59, expressed in seconds.
  • For 2200 V3, the value ranges from 15 to 1440. The unit is minute.
timing_unit=? Unit of the synchronization period.

The value can be:

  • "minute": minutes.
  • "second": seconds.
  • For 2200 V3, the unit is minute.
second_res_access=? Read/write properties of the secondary LUN.

The value can be:

  • "read_only": The secondary LUN can be read only.
  • "read_write": The secondary LUN can be read and written.
compress_enable=? Whether to enable compression.

The value can be "yes" or "no", where: 1:yes: enable compression. 2:no: disables compression.

remote_io_timeout_period=? Timeout period of I/Os written to the secondary storage array during dual-write of synchronous remote replication consistency_group .

The value ranges from 10 to 30, expressed in seconds.

Level

Administrator

Usage Guidelines

  • If the recovery policy is changed from automatic to manual, synchronization jobs for the selected consistency group will not be automatically resumed after links are recovered.
  • Before running this command, ensure that the selected consistency group is exactly the one whose properties you want to modify.
  • You can run this command only on the primary end of a consistency group.

Example

Modify the properties of consistency group "200bc79b99520000", where the new group name is "newname", the new synchronization rate is "highest", and the new recovery policy is "manual".

admin:/>change consistency_group general consistency_group_id=200bc79b99520000 name=newname synchronization_rate=Highest recovery_policy=manual
Command executed successfully.

System Response

None

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Updated: 2019-04-22

Document ID: EDOC1000106139

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