Обновление драйверов, предложенное представителем Amazon, устранило проблему.
Что касается Event ID 5001 ...
проблема ниже - это ответ, который я получил от Amazon:
Please ignore the Xennet 5001 error. This error occurs on every instance
that is launched with Citrix PV drivers and is due to the driver looking
for a feature that is not supported on EC2. It will have no other effect on the instance.
У меня такая же проблема.
Но AWS Supporter ответит мне, как показано ниже: «Они не уверены, что проблема с накопителями Citrix PV».
Currently, we are unable to root cause the issue.
In my personal opinion, this might be a one-time only occurrence,
but as you are running Citrix PV Drivers, I highly encourage you to upgrade.
As the Citrix drivers show up in the logs,
they might had been related to the issue.