Cisco：访问闪存文件系统时 RCU 停滞导致内核崩溃

Summary: MDS Supervisor-4 模块重置而不发出警告。

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Symptoms

访问闪存文件系统时，MDS Supervisor-4 模块重置。
这 show system reset-reason 将原因显示为内核崩溃：

Reason: Kernel Panic

 

该 show system internal kenel nvram-messages previous 命令包含以下消息：1.“d_shrink_del”警告 2.“rcu_sched self-detected stall”类型的签名行，“t=”值为 2100 或更高（CPU 编号和 PID 不相关）

[850772.912879 <3>] WARNING: CPU: 3 PID: 11665 at ... d_shrink_del+0x30/0x73()
...
[850793.913314 <3>] INFO: rcu_sched self-detected stall on CPU { 3}  (t=2101 jiffies g=12138660 c=12138659 q=39875)
...
[850793.917818 <3>] Kernel panic - not syncing: RCU self stall taking too long

 

Cause

Cisco 错误 CSCwj03301此超链接会将您带往 Dell Technologies 之外的网站。
此问题可能仅适用于早于 9.4（1） 版的 Cisco MDS NX-OS 版本。
此问题可能仅适用于 Cisco MDS Supervisor-4 平台。

 

Resolution

修复：
升级到 NX-OS 代码 9.4.1 或更高版本

 

Affected Products

Connectrix MDS-Series, Connectrix MDS-9706, Connectrix MDS-9706-V2, Connectrix MDS-9710, Connectrix MDS-9710-V2, Connectrix MDS-9718, Connectrix MDS-9718-V3, Connectrix MDS-Series Firmware 8.X, Connectrix MDS-Series Firmware 9.X
Article Properties
Article Number: 000222207
Article Type: Solution
Last Modified: 20 Feb 2024
Version:  1
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