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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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cache show global

cache show global

Function

The cache show global command is used to view whether the system enters the write through mode and the cache working mode (single- or dual-controller mode and mirroring supported or not).

Format

cache show global

Parameters

None

Views

Diagnostic view

Usage Guidelines

None

Example

View global information about system caches.

admin:/diagnose>cache show global  
compile version : L1L2 39214 
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 AsyncprefetchOpen : yes 
Global Cache Destage Enable : yes 
Force Alloc Quota Flag Enable : no 
Async Prefetch Max Req Concur : 4096 
Cache update state : 2 
VNode 0 mirror nid : 1 
VNode 1 mirror nid : 1 
VNode 2 mirror nid : 65535 
VNode 3 mirror nid : 65535

System Response

The following table describes the parameter meanings.

Parameter

Meaning

Compile version

Compiling version.

Cache Local Ctrl Id

ID of the local controller.

Cache Mirror Ctrl Id

ID of the mirror controller.

Cache Write Protect

Cache write protection.

Volume Cache Mirror Fault

Flag of a volume cache mirror fault.

Stripe Cache Mirror Fault

Flag of a stripe cache mirror fault.

Volume Cache Work Mode

Working mode of Layer 1 cache.

Stripe Cache Work Mode

Working mode of Layer 2 cache.

All Stripe Cache Write Through

Whether Layer 2 cache is in write through mode.

All Volume Cache Write Through

Whether Layer 1 cache is in write through mode.

All Stripe Cache Mirror Disable

Whether stripe cache mirrors are disabled.

All Volume Cache Mirror Disable

Whether volume cache mirrors are disabled.

All Cache WriteHoleLog Open

Whether WriteHoleLog is enabled.

All Cache AsyncprefetchOpen

Whether asynchronous prefetch is enabled.

Global Cache Destage Enable

Whether global cache flushing is enabled.

Force Alloc Quota Flag Enable

Whether forcible quota flag application is enabled.

Async Prefetch Max Req Concur

Maximum I/O concurrency of asynchronous prefetch.

Translation
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Updated: 2019-07-11

Document ID: EDOC1000181575

Views: 641591

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