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MCCS에서 관리하는 개별 미러 리소스에 한하여 , 미러 관리 콘솔을 제공합니다.
미러 관리 콘솔은 MCCS의 엔진 로직으로 부터 분리되어 동작하므로, 동작여부에 따라 MCCS의 동작과 충돌이 발생 할 수 있습니다.
미러 관리 콘솔에서는 미러 볼륨의 상태 , 사용중인 미러의 용량 등 알수 있으며 대역폭 , 미러네트워크 주소를 변경 등을 수행 할 수 있습니다The mirror management console is provided only for the individual mirror resources managed by MCCS.
The mirror management console operates independently from the engine logic of MCCS, so during operation, it can collide with MCCS.
The mirror management console informs users of the mirror volume status and the capacity of the mirror in use. You can change the bandwidth and the mirror network addresses in it.

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이 페이지의 주요 내용Table of Contents

Table of Contents
maxLevel4

 

화면 구성

미러 관리 화면

미러 관리 화면은 다음과 같습니다.

Image Removed

[그림]  미러 관리 화면

 

미러셋 구성

 MCCS에서 구성하는 미러 리소스가  하나의 미러셋으로 표현됩니다.

 

그림

설명

볼륨

Image Removed 

볼륨 상태가 SOURCE 상태
볼륨의 오른쪽에는 사용중인 용량이 표시됩니다. 

Image Removed볼륨 상태가 TARGET 상태

상태

 

Image Removed

볼륨의 상태가 Mirroring인 상태

Image Removed

볼륨의 상태가 RESYNCING 상태
 RESYNCING 진행시 진행 상태 바가 표시됩니다.
Image Removed볼륨의 상태가 PAUSE 상태
Image Removed볼륨에서 dirtybit가 발생시 상태
 Image Removedsplit brain 발생 상태

 

 

미러 관리 명령 설명

미러 볼륨의 미러셋의 볼륨에 우클릭시 선택 가능한  미러 관리 명령 들에 대해 설명합니다.

 

메뉴

설명

소스

 복제 일시 중지

복제 일시 중지 명령시 볼륨 상태가 PAUSE 상태로 변경 되며
복제가 일시 중지 됩니다. 

강제 동기강제 동기 명령시 RESYNCING 상태로 변경 되며
 강제로 전체 동기화를 진행합니다.
복제 재개일시 중지된 미러 볼륨의 복제 작업을 재개 합니다.
일시 중지 중에 데이터 변동이 일어 났다면 재동기 작업이 발생합니다. 

타겟 

잠금

볼륨을 잠궈 더이상 접근 할 수 없게 됩니다.

 잠금 해제

대상 볼륨의 잠금을 해제 하여 파일 시스템의 내용을 볼 수 있도록 합니다. 
Warning

Target 볼륨 잠금 해제시 파일 시스템의 내용을 볼 수 있도록 합니다. 이로 인해 미러에 부정적인 영향을 줄 수 있습니다.
락을 해제해도 파일에 쓰기 작업은 수행 할 수 없습니다. "쓰기" 작업을 수행하기 위해서는 레지스트리의 readOnly 속성을 수동으로 수정 해야 합니다.

프로퍼티 설정 설명

Image Removed

[그림]  미러 관리 화면

...

속성명

...

설명

...

JOB ID

...

JOB ID 를 나타냅니다.

...

압축 레벨

...

특정 복제 셋에 대한 압축레벨을 나타냅니다. 설정할 수 있는 값은 0~9 까지 입니다.
‘0’는 압축하지 않는다는 의미입니다. 값이 크면 클수록 낮은 대역폭으로 많은 데이터를 전송할 수 있지만 CPU 의 자원을 더 많이 사용합니다.
따라서 시스템의 CPU 사용율과 네트워크의 대역폭을 적절히 균형을 맞춰 최대 효율을 낼 수 있는 압축레벨을 설정하는 것이 바람직합니다.

...

비동기 큐 비움

...

복제 셋이 사용할 수 있는 네트워크 대역폭(kbps/sec)의 최대치를 나타냅니다.
‘0’은 주어진 대역폭을 최대로 사용하겠다는 의미입니다.

...

Mirror Disk Console

Mirror disk management console

The following screen is mirror disk management console.

Image Added

[Figure]  Mirror disk management console

 

Mirror disk Status

 Mirror console show mirroring status as follows.

 

Figure

Description

Volume

Image Added 

The volume role is Source.
Displays the capacity in use on the right side of the volume. 

Image AddedThe volume role is Target.

Status

 

Image Added

The status is Mirroring.

Image Added

The status is Resyncing.
Displays the progress for resyncing.
Image AddedThe status is Paused.
Image AddedThere is a dirtybit in the volume.
 Image AddedSplit brain is occurred.

Mirror management command descriptions

Right click with your mouse button on the mirror set volume to see the descriptions of the mirror management commands that can be selected.

 

Menu

Description

Source

Pause

The mirror status will be changed to PAUSE and replication will be paused. 

ResyncThe mirror status will be changed to RESYNCING and the full synchronization will be initiated between node.
ResumeResume MIRRORING the mirror disk which was paused. Resynchronization will take place in advance, if there is data change during paused. 

Target

Lock

The volume is locked to prevent access the volume from the node.

Unlock

Unlock the target volume to access read only purpose. Mirror status should be paused in advance.
Warning

When you unlock the target volume, you can access the volume read only purpose. It can cause a negative effect to the mirror.
Even if you unlock it, you cannot write to the disk. If you want to "write" to the disk, you must manually change the readOnly attributes in the registry. But it does not highly recommended to secure data integrity.

Descriptions of properties setting

Image Added

[Figure] Mirror disk properties


Attribute name

Description

JOB ID

JOB ID is displayed.

Bit MapIt is the directory of intent log.

Compression level

It represents the compression level for a specific mirror set. The level range is from 0 to 9.
‘0’ means no compression. The greater value transfer more data in a smaller bandwidth, but it uses more CPU resource of the node.
Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency.

Flush async queue

Even if a driver receives a request for deleting a queue, this function can be used to prevent deletion of queues on a specific volume.
Bandwidth 

It is the max network bandwidth (kbps/sec) that can be used by a copy set.
‘0’ means that the given bandwidth will be used with maximum efficiency.

Mirror IP address IP address of data replication between nodes in a cluster.

※ Mirror IP address is able to be edited. But this can be done when mirror state is paused. If mirror status is MIRRORING when you edit the mirror IP address, the status changed to PAUSE automatically. Select the resume from mirror menu to resume the mirroring after done this.


SDR console

Shared disk DR management console

Shared disk DR management console is as follows.

Image Added
[Figure] Shared Disk DR Management Screen

 

Node access status

It represents the status of node accessing the shared disk.
Image Added

[figure]  Shared disk DR node access status


Figure

Description

Image Added

Both nodes accessing the volume

Image Added

Active1 node accessing the volume
Image AddedStandBy1 node accessing the volume
Image AddedNeither of nodes accessing the volume


Mirror set configuration

 The Shared disk DR resource configured in MCCS is expressed as a single mirror set.

 

Figure

Descriptions

Volume

 Image Added

Volume in the SOURCE role.
The capacity in use is displayed on the right side of the volume.

Image AddedThe volume in the TARGET role of offsite DR.

Status

 

Image Added

 The volume in the MIRRORING status.

Image Added

Volume in the RESYNCING status.
The progress bar is displayed during RESYNCING . 
Image AddedThe volume in pause status.
Image AddedDirtybit occurred in the volume
Image Addedsplit-brain is occurred.
Image AddedDR volume status in NONE

Mirror disk DR management menu

Right click with your mouse button on the mirror set volume in mirror volume to see the descriptions of the mirror management commands that can be selected.

 

Menu

Descriptions

Source

Pause

The mirror status will be changed to PAUSE and replication will be paused. 

ResyncThe mirror status will be changed to RESYNCING and the full synchronization will be initiated between node.
ResumeResume MIRRORING the mirror disk which was paused. Resynchronization will take place in advance, if there is data change during paused. 

Target 

Lock

The volume is locked to prevent access the volume from the node.

Unlock

Unlock the target volume to access read only purpose. Mirror status should be paused in advance.
Warning

When you unlock the target volume, you can access the volume read only purpose. It can cause a negative effect to the mirror. 
Even if you unlock it, you cannot write to the disk. If you want to "write" to the disk, you must manually change the readOnly attributes in the registry. But it does not highly recommended to secure data integrity.


Shared disk DR Properties

Image Added
[Figure] Shared Disk DR Properties


Attribute name

Descriptions

JOB ID

JOB ID is displayed.

MirrorEndPointsShows the information of all jobs defined in the mirror. (Node name, Letter, MirrorIP, Mirror mode)

Compression level

It represents the compression level for a specific mirror set. The level range is from 0 to 9. 
‘0’ means no compression. The greater value transfer more data in a smaller bandwidth, but it uses more CPU resource of the node. 
Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency.

Flush Async Queue

Even if a driver receives a request for deleting a queue, this function can be used to prevent deletion of queues on a specific volume.
Bandwidth

It is the max network bandwidth (kbps/sec) that can be used by a copy set. 
‘0’ means that the given bandwidth will be used with maximum efficiency.

Mirror IP address IP address of data replication between a cluster and an offisite DR.



MDR console

Mirror disk DR management console

Mirror disk DR management console is as follows.

Image Added

[Figure]  Mirror disk DR console.

 

Mirror disk set

Mirror disk resource in a cluster is expressed as an MirrorSet.

 

Figure

Description

Volume

Image Added 

The volume role is Source.
Displays the capacity in use on the right side of the volume. 

Image AddedThe volume role of offiste DR is Target.

Status

 

 

Image Added

The volume status is Mirroring.

Image Added

The volume status is Resyncing.
Displays the progress for resyncing.
Image AddedThe volume status is Pause.
Image AddedThere is a dirtybit in the volume.
 Image AddedSplit brain is occurred.

 

 

Mirror disk DR management menu

Right click with your mouse button on the mirror set volume in mirror volume to see the descriptions of the mirror management commands that can be selected.

 

menu

description

Source

Pause

The mirror status will be changed to PAUSE and replication will be paused. 

ResyncThe mirror status will be changed to RESYNCING and the full synchronization will be initiated between node.
ResumeResume MIRRORING the mirror disk which was paused. Resynchronization will take place in advance, if there is data change during paused. 

Target

 

Lock

The volume is locked to prevent access the volume from the node.

Unlock

Unlock the target volume to access read only purpose. Mirror status should be paused in advance.
Warning

When you unlock the target volume, you can access the volume read only purpose. It can cause a negative effect to the mirror. 
Even if you unlock it, you cannot write to the disk. If you want to "write" to the disk, you must manually change the readOnly attributes in the registry. But it does not highly recommended to secure data integrity.

Mirror disk DR properties

Image Added

[Figure]  Mirror disk DR properties


Attribute Name

Description

JOB ID

JOB ID is displayed.

MirrorEndPointsShows the information of all jobs defined in the mirror. (Node name, Letter, MirrorIP, Mirror mode)

Compression Level

It represents the compression level for a specific copy set. The setting range is from 0 to 9. 
‘0’ means no compression. The greater the value is, the smaller bandwidth is used to transmit greater data. But also, it uses more of the CPU resources. 
Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency. 

Flush Async Queue

It prevents deletion of queues on a specific volume even if a driver receives a request for deleting a queue.
Bandwidth

It represents the max network bandwidth (kbps/sec) that can be used by a copy set. 
‘0’ means that the given bandwidth will be used with maximum efficiency.

Mirror IP AddressIP address of data replication between a cluster and an offisite DR.

※ Mirror IP address is able to be edited. But this can be done when mirror state is paused. If mirror status is MIRRORING when you edit the mirror IP address, the status changed to PAUSE automatically. Select the resume from mirror menu to resume the mirroring after done this.