查看一个由于磁盘架缺少节点的两个路径而导致系统运行状况呈现降级状态的具体示例,您可以了解在响应警报时 CLI 显示的内容。
启动 Data ONTAP 之后,您检查了系统运行状况,发现状态为降级:
cluster1::>system health status show
Status
---------------
degraded
您显示警报以查明问题所在,看到磁盘架 2 并未通过两个路径连接到节点 1:
cluster1::>system health alert show
Node: node1
Resource: Shelf ID 2
Severity: Major
Indication Time: Mon Nov 10 16:48:12 2013
Probable Cause: Disk shelf 2 does not have two paths to controller
node1.
Possible Effect: Access to disk shelf 2 via controller node1 will be
lost with a single hardware component failure (e.g.
cable, HBA, or IOM failure).
Corrective Actions: 1. Halt controller node1 and all controllers attached to disk shelf 2.
2. Connect disk shelf 2 to controller node1 via two paths following the rules in the Universal SAS and ACP Cabling Guide.
3. Reboot the halted controllers.
4. Contact support personnel if the alert persists.
您显示有关警报的详细信息以获取更多信息,包括警报 ID:
cluster1::>system health alert show -monitor node-connect -alert-id DualPathToDiskShelf_Alert -
instance
Node: node1
Monitor: node-connect
Alert ID: DualPathToDiskShelf_Alert
Alerting Resource: 50:05:0c:c1:02:00:0f:02
Subsystem: SAS-connect
Indication Time: Mon Mar 21 10:26:38 2011
Perceived Severity: Major
Probable Cause: Connection_establishment_error
Description: Disk shelf 2 does not have two paths to controller node1.
Corrective Actions: 1. Halt controller node1 and all controllers attached to disk shelf 2.
2. Connect disk shelf 2 to controller node1 via two paths following the rules in the Universal SAS and ACP Cabling Guide.
3. Reboot the halted controllers.
4. Contact support personnel if the alert persists.
Possible Effect: Access to disk shelf 2 via controller node1 will be lost with a single
hardware component failure (e.g. cable, HBA, or IOM failure).
Acknowledge: false
Suppress: false
Policy: DualPathToDiskShelf_Policy
Acknowledger: -
Suppressor: -
Additional Information: Shelf uuid: 50:05:0c:c1:02:00:0f:02
Shelf id: 2
Shelf Name: 4d.shelf2
Number of Paths: 1
Number of Disks: 6
Adapter connected to IOMA:
Adapter connected to IOMB: 4d
Alerting Resource Name: Shelf ID 2
您对警报进行确认,以表明您正在执行处理。
cluster1::>system health alert modify -node node1 -alert-id DualPathToDiskShelf_Alert -acknowledge true
您修复磁盘架 2 与节点 1 之间的布线,随后重新启动系统。然后再次检查系统运行状况,看到状态为 OK:
cluster1::>system health status show
Status
---------------
OK