更换E系列控制器后、某些主机上的iSCSI连接丢失
适用场景
- E 系列
- SANtricity操作系统
- Linux DM-MP (设备映射程序多路径)
- 已执行控制器更换
问题描述
- 更换E系列控制器后、某些主机的iSCSI连接松动
- Recovery Guru and
MAJOR-EVENT-LOG
(MEL)报告以下错误:Loss of host-side connection redundancy detected
Volume not on preferred path due to AVT/RDAC failover
ALB_HOST_REDUNDANCY_LOST
NON_PREFERRED_PATH
- 重新分布卷可临时解决这些错误、但几分钟后会再次检测到这些错误
- 除了更换控制器之外、不会在控制器和主机上执行任何配置更改
STATE-CAPTURE-DATA
>spmShow
表示更换后的控制器没有从配对控制器的某些主机建立iSCSI连接
更换控制器A后的示例:
Executing spmShow(0,0,0,0,0,0,0,0,0,0) on controller A:
---I-T-Nexus (PORT) Objects (ITN)---
ITNID InitiatorPort TargetPort Online
----- ------------------------------ ------------------------------ ------
x0005 Host_0000000000000003 iSCSI_TargetPortPR_Ah_ch7 on <IQN>:<HOST1>
x0006 Host_0000000000000004 iSCSI_TargetPortPR_Ah_ch8 on <IQN>:<HOST1>
Executing spmShow(0,0,0,0,0,0,0,0,0,0) on controller B:
---I-T-Nexus (PORT) Objects (ITN)---
ITNID InitiatorPort TargetPort Online
----- ------------------------------ ------------------------------ ------
x0005 Host_0000000100000004 iSCSI_TargetPortPR_Bh_ch8 off <IQN>:<HOST1>
x0006 Host_0000000100000002 iSCSI_TargetPortPR_Bh_ch8 on <IQN>:<HOST1>
x0007 Host_0000000100000002 iSCSI_TargetPortPR_Bh_ch8 on <IQN>:<HOST1>
x0008 Host_0000000100000020 iSCSI_TargetPortPR_Bh_ch8 off <IQN>:<HOST2>
x0009 Host_0000000100000001 iSCSI_TargetPortPR_Bh_ch7 on <IQN>:<HOST2>
x000a Host_000000010000001f iSCSI_TargetPortPR_Bh_ch7 off <IQN>:<HOST1>
x000b Host_0000000100000002 iSCSI_TargetPortPR_Bh_ch8 off <IQN>:<HOST2>
x000c Host_0000000100000001 iSCSI_TargetPortPR_Bh_ch7 on <IQN>:<HOST2>
x000d Host_0000000100000002 iSCSI_TargetPortPR_Bh_ch8 on <IQN>:<HOST3>
x000e Host_0000000100000002 iSCSI_TargetPortPR_Bh_ch8 on <IQN>:<HOST3>