由于主机连接，卷不在首选路径上

• NetApp E 系列
• 卷不在首选路径上(VNOPP)

• 系统通过自动卷传输 (AVT) 或冗余磁盘阵列控制器 (RDAC) 故障转移事件报告 VNOPP MAJOR-EVENT-LOG：

Date/Time: 20XX-05-10 22:26:11
Sequence number: 69291
Event type: 4011
Event category: Error
Priority: Critical
Event needs attention: true
Event send alert: true
Event visibility: true
Description: Volume not on preferred path due to AVT/RDAC failover
Event specific codes: 0/0/0
Component type: Controller
Component location: Shelf XX, Bay X
Logged by: Controller in bay X

• RECOVERY-GURU-PROCEDURES 报告 NON_PREFERRED_PATH-Recovery Failure Type Code: 10
• IO 传输事件在 VNOPP 之前发生，并指定导致 IO 的主机和受影响的控制器：

A:5/10/XX 10:26:11 PM (22:26:11) 69291 4011 Volume not on preferred path due to AVT/RDAC failover - Shelf XX, Bay X <--CRITICAL
B:5/10/XX 10:21:11 PM (22:21:11) 69290 2044 IO shipping implicit volume transfer - Volume Volumename
----> Shipped/Owned IOs: 186360/61155, Host ID: XXX

• 所有 I/O 操作都集中在一个控制器上，导致 CPU 使用率增加。