一个控制器在升级期间未响应

• FAS2650
• DS212C磁盘架
• ONTAP 升级

• 控制器在升级期间未响应
• 启动过程挂起并显示消息 Entering FM state:5 because mbFound:0 local inheadswap:0
• 由于未找到根卷、控制器最终会重新启动

WARNING: there do not appear to be any disks attached to the system.
No root volume found.
Rebooting... (press ctrl-c during boot to break reboot loop)
Uptime: 6m10s
System rebooting...
 

• 在维护模式下无法看到任何磁盘

*> disk show -v
Local System ID: 123456789

disk show: No disks attached to system.

• 维护模式下SAS适配器缺少磁盘架和磁盘信息

     slot 0: SAS Host Adapter 0a (PMC-Sierra PM8070 rev. C, SAS, <UP>)
         Firmware rev:     03.08.09.00
         Base WWN:       5:00a098:00aec1a:30
         Temperature:     Not Available
         Phy State:      [0] Enabled, 12.0 Gb/s
                   [1] Enabled, 12.0 Gb/s
                   [2] Enabled, 12.0 Gb/s
                   [3] Enabled, 12.0 Gb/s
         Mini-SAS HD Vendor:     Amphenol     
         Mini-SAS HD Part Number:   X66032A+A0    
         Mini-SAS HD Type:      Passive Copper (unequalized) 2m ID:01
         Mini-SAS HD Serial Number: APF16340162481
     slot 0: SAS Host Adapter 0b (PMC-Sierra PM8070 rev. C, SAS, <UP>)
         Firmware rev:     03.08.09.00
         Base WWN:       5:00a098:00aec1a:34
         Temperature:     Not Available
         Phy State:      [4] Enabled, 12.0 Gb/s
                   [5] Enabled, 12.0 Gb/s
                   [6] Enabled, 12.0 Gb/s
                   [7] Enabled, 12.0 Gb/s

• sasadmin expander_map 显示了适配器0b的正确布线、但适配器0a的信息已损坏(例如、缺少磁盘架序列号)​​​​​​​​​​​​​​​​​​​​​​​​​​​​   

Expanders on channel 0a: 
Level   0: WWN 500a098007cb4815, ID  0, Serial Number '         ', Product '', Rev '', Slot A
Level   1: WWN 500a098007cb47b5, ID  0, Serial Number '         ', Product '', Rev '', Slot A

Expanders on channel 0b: 
Level   1: WWN 500a09800aec1a3f, ID  0, Serial Number ' SHFHU1736000204', Product 'DS22412IOM12E   ', Rev '0230', Slot A
Level   2: WWN 500a098007cb4811, ID  2, Serial Number ' SHFHU1739000214', Product 'DS22412IOM12A   ', Rev '0281', Slot A
Level   3: WWN 500a098007cb47a5, ID  1, Serial Number ' SHFHU1739000215', Product 'DS22412IOM12A   ', Rev '0281', Slot A备份磁盘备份

• 从适配器0a中拔下SAS缆线后、系统可以再次看到磁盘并启动
• 重新拔插/更换IOM模块和SAS缆线无法解决问题描述 问题