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Advanced O&M Command Reference

OceanStor 18000 V3 Series V300R006

This document is applicable to OceanStor 18500 V3 and 18800 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_domain meta_backup

change disk_domain meta_backup

Function

The change disk_domain meta_backup command is used to back up metadata.

Format

change disk_domain meta_backup type=? disk_domain_id=? [ meta_type=? ] [ switch=? ] [ lun_id=? ] [ tier_type=? ] [ force=? ]

Parameters

Parameter

Description

Value

type=?

Metadata type.

The value can be "load_tree_head", "init_lun_layout", "backup_start", "tree_switch", "pool_switch", "init_disk_domain_lun_layout", "backup_cancel", "system_switch", or "init_disk_domain_layout", where:

  • "load_tree_head": to load a tree head.
  • "init_lun_layout": to initialize the metadata backup layout of a LUN.
  • "backup_start": to start backing up metadata.
  • "tree_switch": tree switch.
  • "pool_switch": disk domain metadata switch.
  • "init_disk_domain_lun_layout": to initialize the metadata backup layouts of all LUNs.
  • "backup_cancel": to cancel metadata backing up.
  • "system_switch": system backup switch.
  • "init_disk_domain_layout": to initialize the metadata backup layout of a disk domain.

disk_domain_id=?

Disk domain ID.

To obtain the value, run the "show disk_domain general" command in the guest view.

meta_type=?

Metadata object type.

The value can be "ZONE_CKG", "LD_DISK_LOG", or "VOL_EXTENT", where:

  • "ZONE_CKG": CKG info tree.
  • "LD_DISK_LOG": disk log tree.
  • "VOL_EXTENT": extent info tree.

switch=?

Operation type.

The value can be "off" or "on", where:

  • "off": disables the tree switch.
  • "on": enables the tree switch.

lun_id=?

LUN ID.

To obtain the value, run the "show lun general" command in the guest view.

tier_type=?

Tier type.

The value can be "SSD", "SAS", or "NearLine_SAS", where:

  • "SSD": tier 0 with SSDs.
  • "SAS": tier 1 with SAS disks.
  • "NearLine_SAS": tier 2 with NL-SAS disks.

force=?

Whether to perform forcible initialization.

The value can be "no" or "yes", where:

  • "no": not to perform forcible initialization.
  • "yes": to perform forcible initialization.

Views

Developer view

Usage Guidelines

None

Example

Initialize the metadata backup layouts of all LUNs in disk domain "0".

developer:/>change disk_domain meta_backup type=init_disk_domain_lun_layout disk_domain_id=0 
Command executed successfully.

System Response

None

Translation
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Updated: 2019-07-12

Document ID: EDOC1000138389

Views: 488427

Downloads: 85

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