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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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show ddp chunk_info

show ddp chunk_info


The show ddp chunk_info command is used to query the abstracts about deduplication and compression data, including fingerprint of data before deduplication and compression, and checksum of data after deduplication and compression.


show ddp chunk_info domain_id=? chunk_id=? controller=?





domain_id=? ID of the domain that you want to query.

To obtain the value, run the "show file_system general" or "show lun dedup_compress" command.

chunk_id=? ID of the chunk that you want to query.

The value ranges from 1 to 18446744073709551615.

controller=? Controller ID.

The value is in the format of "XA" or "XB" or "XC" or "XD", where the "X" is an integer ranging from 0 to 3, for example: "0A", "1C".


Developer view

Usage Guidelines

  • Before running this command, confirm that you have selected the correct domain ID and chunk ID.
  • When runnning this command, specify a controller ID.


To show the abstracts of deduplication and compression chunk "15417" in domain "0".

developer:/>show ddp chunk_info domain_id=0 chunk_id=15417 controller=0A
Chunk ID : 15417
Checksum Value : 44253
Fingerprint : bf916766b5d1fb83a0251a10751d8cc9d9c5198c

System Response

The following table describes the parameter meanings.



Chunk ID

Chunk ID.

Checksum Value

Chunk verification value.


Chunk fingerprint.

Updated: 2020-01-17

Document ID: EDOC1000181575

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