设备发生warm reboot
高端内存的数据都被清空了，包括只有1条启动记录，from-highmemory里的数据都没了。
现象为掉电重启情况，掉电的重启的是硬件感知记录的，记录到nvram中，然后软件启动的时候去读取，Warm reboot是未知原因重启，是软件感知记录的，由于电压波动，在掉电瞬间，软件可能先运行异常，记录了这个原因。因此，掉电重启也可能被记录为warm reboot，需要诊断中判断高级内存或异常重启记录是否有相关记录判断
===============printk log buffer info ===============
[ 0.000000] 0:---------- secondary log buffer [1] ----------
===============printk log buffer info on slot 7===============
[ 0.000000] 0:---------- secondary log buffer [1] ----------
……
====local logbuffer chassis 0 slot 0 display from-highmemory====
====local logbuffer chassis 0 slot 2 display from-highmemory====
====local logbuffer chassis 0 slot 6 display from-highmemory====
====local logbuffer chassis 0 slot 7 display from-highmemory====
====local logbuffer chassis 0 slot 8 display from-highmemory====
====local logbuffer chassis 0 slot 9 display from-highmemory====
====local logbuffer chassis 0 slot 10 display from-highmemory====
==== display hardware internal port peak-rate slot 0 ====
Port Ten-GigabitEthernet0/0/1:
Valid=0, has no record!
Port Ten-GigabitEthernet0/0/2:
Valid=0, has no record!
Port Ten-GigabitEthernet0/0/3:
Valid=0, has no record!
Port Ten-GigabitEthernet0/0/4:
Valid=0, has no record!
Port Ten-GigabitEthernet0/0/5:
Valid=0, has no record!
建议改多路外部供电运行观察