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Advanced O&M Command Reference

OceanStor 2800 V3 V300R006

This document is applicable to OceanStor 2800 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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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
show cache global

show cache global

Function

The show cache global command is used to query whether the system is in write through mode and the working mode of cache (single/dual controllers and mirroring or not).

Format

show cache global [ controller=? ]

Parameters

Parameter

Description

Value

controller=?

Controller ID.

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

Views

Developer view

Usage Guidelines

None

Example

Query global cache information about controller "0A".

developer:/>show cache global controller=0A 

Cache Local Ctrl ID : 0 
Cache Mirror Ctrl ID : 1 
Cache Write Protect : 0 
Volume Cache Mirror Fault : yes 
Stripe Cache Mirror Fault : yes 
Volume Cache Work Mode : invalid 
Stripe Cache Work Mode : invalid 
All Stripe Cache Write Through : no 
All Volume Cache Write Through : no 
All Stripe Cache Mirror Disable : no 
All Volume Cache Mirror Disable : no 
All Cache WriteHoleLog Open : no 
All Cache Asyncprefetch Open : yes 
Global Cache Destage Enable : yes 
Force Alloc Quota Flag Enable : no 
Async Prefetch Max Req Concurrent : 4096 
Async Prefetch Current Req Concurrent : 6 
Cache Update State : 2 
Cache Command Current Number: 0 
VNode 0 Mirror Node ID : 1 
VNode 1 Mirror Node ID : 1 
VNode 2 Mirror Node ID : 65535 
VNode 3 Mirror Node ID : 65535

System Response

The following table describes the parameter meanings.

Parameter

Meaning

Cache Local Controller ID

Current controller ID of cache.

Cache Mirror Controller ID

Controller ID of mirror cache.

Cache Write Protect

Whether write protection is enabled for cache.

Volume Cache Mirror Fault

Whether errors occur on level-1 mirror cache.

Stripe Cache Mirror Fault

Whether errors occur on level-2 mirror cache.

Volume Cache Work Mode

Working mode of level-1 cache.

Stripe Cache Work Mode

Working mode of level-2 cache.

All Stripe Cache Write Through

Whether all level-2 cache is working in write through mode.

All Volume Cache Write Through

Whether all level-1 cache is working in write through mode.

All Stripe Cache Mirror Disable

Whether all level-2 mirror cache is working.

All Volume Cache Mirror Disable

Whether all level-1 mirror cache is working.

All Cache WriteHoleLog Open

Whether all cache write hole logs are enabled.

All Cache Asyncprefetch Open

Whether all cache asynchronous prefetch is enabled.

Global Cache Destage Enable

Whether global cache flushing is valid.

Force Alloc Quota Flag Enable

Whether the forcible quota application flag is enabled.

Async Prefetch Max Req Concurrent

Maximum number of concurrent REQs in asynchronous prefetch.

Async Prefetch Current Req Concurrent

Number of concurrent REQs delivered to disks in asynchronous prefetch.

Cache Update State

Cache upgrade phase.

Cache Command Current Number

Number of commands that are being executed in a cache.

VNode 0 Mirror Node ID

Mirror node that maps to virtual node 0.

VNode 1 Mirror Node ID

Mirror node that maps to virtual node 1.

VNode 2 Mirror Node ID

Mirror node that maps to virtual node 2.

VNode 3 Mirror Node ID

Mirror node that maps to virtual node 3.

Translation
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Updated: 2019-07-12

Document ID: EDOC1000138381

Views: 663810

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