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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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spa queryext

spa queryext


The spa queryext command is used to query information about a single extent.


spa queryext -p pool id -l lun id -e extent id -t volume type





pool id Disk domain ID.

The ID can be obtained by running the show disk_domain general command in super administrator mode.

lun id LUN ID.

The value ranges from 0 to n minus one. n indicates the maximum number of LUNs.

extent id Extent ID.


volume type Volume type.

The value can be 0 or 1.

  • 0: data.
  • 1: meta.


Diagnostic view

Usage Guidelines

This command must be run on the working controller of the LUN.


Query the information of extent 0x40000001 of LUN 0 in disk pool 0, and volume type is meta.

admin:/diagnose>spa queryext -p 0 -l 0 -e 0x40000001 -t 1
Extent ID : 0x40000001
Ckg ID : 0x4000
Ckg Offset : 1
Init Flag : 1 (0:init not finished 1: init finished)
Zone Index : 0
Migrate Flag : 0 (0:not migrate 1:migrate)

System Response

The following table describes the parameter meanings.



Extent ID

Extent ID.

Ckg ID


Ckg Offset

Offset in a CKG.

Init Flag

Whether the extent is initialized. 0 indicates the extent is not initialized. 1 indicates the extent is initialized.

Updated: 2020-01-17

Document ID: EDOC1000181575

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