CONTAP-403485：由于 2n MetroCluster 中的驱动器故障，导致节点崩溃和切换失败（AUSO）

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问题描述

在单个磁盘上报告的 scsi.cmd 错误，导致节点崩溃：

 [?]  Fri Feb 21 06:00:15 +0100 [Cluster1-01: slifc_intrd: scsi.cmd.checkCondition.bridge.SAS.event:debug]: Disk device switchA1:9.126L1524: Check Condition: CDB 0x2f:b8192800:0400: Sense Data SCSI:aborted command -  (0xb - 0x88 0x4 0x81)(2041).
 [?]  Fri Feb 21 06:00:17 +0100 [Cluster1-01: slifc_intrd: scsi.cmd.checkCondition.bridge.SAS.topoChange:debug]: Disk device switchA2:8.126L1524: Check Condition: CDB 0x2f:b8192000:0400: Sense Data SCSI:aborted command -  (0xb - 0x88 0x3 0x1)(4276).

[?]  Fri Feb 21 06:20:26 +0100 [Cluster1-01: drsom_watch: sk.panic:alert]: Panic String: DR DRSOM_SSTBL_OP_SWITCHOVER Operation is Hung in drdom_SO in SK process drsom_watch on release 9.13.1P9 (C)

结果 AUSO（自动切换）失败，DR 合作伙伴也发生崩溃：

[?]  Fri Feb 21 06:52:37 +0100 [Cluster2-01: send_boot_msg_thread: mgr.stack.string:notice]: Panic string: DR DRSOM_SSTBL_OP_SWITCHOVER Operation is Hung in drdom_SO in SK process drsom_watch on release 9.13.1P9 (C)