The 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.
Table of Contents
Mirror Disk Console
Mirror disk management console
The following screen is mirror disk management console.
[Figure] Mirror disk management console
Mirror disk Status
The mirror resource configured in MCCS is expressed as a single mirror set.
| Figure | Description |
Volume |
| The volume role is Source. |
 | The volume role is Target. | |
Status
|
| The status is Mirroring. |
| The status is Resyncing. Displays the progress for resyncing. | |
 | The status is Paused. | |
 | There is a dirtybit in the volume. | |
 | Split 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. |
| Resync | The mirror status will be changed to RESYNCING and the full synchronization will be initiated between node. | |
| Resume | Resume 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. |
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
[Figure] Mirror disk properties
Attribute name | Description |
JOB ID | JOB ID is displayed. |
| Bit Map | It 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. |
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. |
| Mirror network 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.
네트워크 주소 변경 완료 후, 복재 재개를 위해서 미러 재 동기 작업이 필요합니다.
SDR console
Shared disk DR management console
Shared disk DR management console is as follows.
[Figure] Shared Disk DR Management Screen
Node access status
It represents the status of node accessing the shared disk.
[figure] Shared disk DR node access status
Figure | Description |
| Both nodes accessing the volume |
| Active1 node accessing the volume |
 | StandBy1 node accessing the volume |
 | Neither 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 | | Volume in the SOURCE role. |
 | The volume in the TARGET role of offsite DR. | |
Status
|
| The volume in the MIRRORING status. |
| Volume in the RESYNCING status. The progress bar is displayed during RESYNCING . | |
| The volume in pause status. | |
| Dirtybit occurred in the volume | |
| split-brain is occurred. | |
 | DR 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 | If you command the pausing copy, |
| Forceful Sync | If you use the forceful sync command, the status will be changed to RESYNCING and the full synchronization will be done forcefully. | |
| Resuming Copy | Resume to copy the mirror volume that was paused. Resynchronization takes place if data is changed during temporary pause. | |
Target | Lock | Lock the volume to prevent access anymore. |
Unlock | Unlock the target volume to see the content of the file. |
Unlock the target volume to see the content of the file. It can cause a negative effect to the mirror.
Even if you unlock it, you cannot write to the file. If you want to "write" to the file, you must manually change the readOnly attributes in the registry.
Descriptions for shared disk DR property configuration
[Figure] Shared Disk DR Management Screen
Attribute name | Descriptions |
JOB ID | JOB ID is displayed. |
| MirrorEndPoints | Shows the information of all jobs defined in the mirror. (Node name, Letter, MirrorIP, Sync type) |
Compression level | It represents the compression level for a specific copy set. The setting range is from 0 to 9. |
Empty 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. |
| Mirror network address | It copies the volume to the set IP address. |
MDR console
Mirror disk DR management console
Mirror disk DR management console is as follows.
[Figure] Mirror disk DR console.
Mirror disk set
Mirror disk resource in a cluster is expressed as an MirrorSet.
| Figure | Description |
Volume |
| The volume role is Source. |
| The volume role of offiste DR is Target. | |
Status
|
| The volume status is Mirroring. |
| The volume status is Resyncing. Displays the progress for resyncing. | |
| The volume status is Pause. | |
| There is a dirtybit in the volume. | |
| | Split 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 | 복제 일시 중지 명령시 볼륨 상태가 PAUSE 상태로 변경 되며 |
| Resync | 강제 동기 명령시 RESYNCING 상태로 변경 되며 강제로 전체 동기화를 진행합니다. | |
| Resume | 일시 중지된 미러 볼륨의 복제 작업을 재개 합니다. 일시 중지 중에 데이터 변동이 일어 났다면 재동기 작업이 발생합니다. | |
Target
| Lock | 볼륨을 잠궈 더이상 접근 할 수 없게 됩니다. |
Unlock | 대상 볼륨의 잠금을 해제 하여 파일 시스템의 내용을 볼 수 있도록 합니다. |
Target 볼륨 잠금 해제시 파일 시스템의 내용을 볼 수 있도록 합니다. 이로 인해 미러에 부정적인 영향을 줄 수 있습니다.
락(lock)을 해제해도 파일에 쓰기 작업은 수행 할 수 없습니다. "쓰기" 작업을 수행하기 위해서는 레지스트리의 readOnly 속성을 수동으로 수정해야 합니다.
속성 설정 설명
[그림] 속성 설정 화면
속성명 | 설명 |
JOB ID | JOB ID 를 나타냅니다. |
| MirrorEndPoints | 미러에 정의된 모든 job에 대한 정보를 보여줍니다. ( 노드이름, Letter , MirrorIP, 동기화 타입) |
압축 레벨 | 특정 복제 셋에 대한 압축레벨을 나타냅니다. 설정할 수 있는 값은 0~9 까지 입니다. |
비동기 큐 비움 | 드라이버가 큐 삭제 요청을 받더라도 특정 볼륨에 대해서는 큐를 삭제 하지 않도록 설정 하는 것입니다. |
| 대역폭 | 복제 셋이 사용할 수 있는 네트워크 대역폭(kbps/sec)의 최대치를 나타냅니다. |
| 미러 네트워크 주소 | 설정된 IP로 볼륨을 복제합니다. |
※ 미러 네트워크 주소는 속성 설정 화면에서 변경할 수 있습니다.
단, 복제가 일시 중지된 상태에서만 변경할 수 있으며, 이는 미러 관리 화면에서 할 수 있습니다.
네트워크 주소 변경 완료 후, 복재 재개를 위해서 미러 재 동기 작업이 필요합니다.