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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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cache show ckg

cache show ckg


The cache show ckg command is used to view the details about chunk groups (CKGs) in a cache.


cache show ckg detail poolid ckgobjid

cache show ckg all poolid type [ num ]





detail Details.


all All information.


poolid Storage pool ID.

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

ckgobjid CKG object ID.

The value ranges from 0 to 2^64.

type CKG type.

The value can be all, ref, rc,wc, or dsg.

all: all types.

ref: chunk with reference counts.

rc: read chunk.

wc: write chunk.

dsg: chunk in the disk flushing linked list.

num Number of command outputs.

The value ranges from 0 to 2^32.


Diagnostic view

Usage Guidelines



To view the details about chunk groups (CKGs) in a cache.

admin:/diagnose>cache show ckg all 0 wc 
Ckg num: [20]
ckgId 0 ~ 15 : 0x401142004038 0x401142004040 0x401142004041 0x401142004049 0x40114200403a 0x401142004042 0x401142004033 0x40114200403b 0x401142004043 0x401142004034 0x40114200403c 0x401142004044 0x40114200403d 0x401142004045 0x401142004036 0x40114200403e
ckgId 16 ~ 36 : 0x401142004046 0x401142004037 0x40114200403f 0x401142004047

System Response


Updated: 2020-01-17

Document ID: EDOC1000181602

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