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Advanced O&M Command Reference

OceanStor 5000, 5000F, 6000, and 6000F V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5110F V5, 5300 V5, 5500 V5, 5600 V5, 5800 V5, 6800 V5, 5300F V5, 5500F V5, 5600F V5, 5800F V5, and 6800F 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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show ddp mds_info

show ddp mds_info

Function

The show ddp mds_info command is used to query information about the deduplication module, including the cache hit ratio, cache memory usage, cache flushing, and Bloom filter reconstruction.

Format

show ddp mds_info domain_id=? controller=?

Parameters

Parameter

Description

Value

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.

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".

Views

Developer view

Usage Guidelines

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

Example

To display the mds information about the domain "0".

developer:/>show ddp mds_info domain_id=0 controller=0A 
Fingerprint Cache : 32113212/47229658 
Chunk cache : 0/0 
Operations Cache : 11/248366 
Bloom Filter : 14868080/15116446 
LRU Cache : 9/248355 
Disk : 34306/248346 
Fingerprint Memory : 0KB/524288KB 
Index Memory : 17408KB/9682944KB 
Bloom Filter Memory : 17408KB 
Operations Memory : 0KB 
LRU Memory : 0KB 
Operations Flush Item : 0 
Operations Flush Count : 0 
Operations Multiple Flush Count : 0 
Bloom Filter Reconstruct Number : 1024 
Bloom Filter ReadBtree Number : 73373 
Bloom Filter Reconstructing Number : 0 
Bloom Filter Reconstruct Flag : 1

System Response

The following table describes the parameter meanings.

Parameter

Meaning

Fingerprint Cache

Fingerprint cache hit count/Fingerprint cache query count.

Chunk cache

Chunk cache hit count/Chunk cache query count.

Operations Cache

Operations cache hit count/Operations cache query count.

Bloom Filter

Bloom filter cache judge new count/Bloom filter cache query count.

LRU Cache

LRU cache hit count/LRU cache query count.

Disk

Disk hit count/Disk query count.

Fingerprint Memory

Memory used by fingerprint/Maximum fingerprint memory.

Index Memory

Memory used by Index/Maximum Index memory.

Bloom Filter Memory

Memory used by Bloom Filter.

Operations Memory

Memory used by Operations.

LRU Memory

Memory used by LRU.

Operations Flush Item

Operations flush item count.

Operations Flush Count

Operations flush count.

Operations Multiple Flush Count

Operations cyclic flush count.

Bloom Filter Reconstruct Number

Bloom filter reconstruction count.

Bloom Filter ReadBtree Number

Bloom filter disk read count.

Bloom Filter Reconstructing Number

Number of bloom filter buckets under reconstruction in this domain.

Bloom Filter Reconstruct Flag

Bloom filter reconstructing flag.

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Updated: 2019-07-11

Document ID: EDOC1000181619

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