Hi!
We use Win 2008 R2 SP2 with Hyper-V. As a guest OS we use Win 2008 R2 and CentOS 5.5-5.8.
The Windows guests work fine, but Linux guests from time to time just stops. Usually it happens once in 1-2 months. Stops only one VM at one time (I haven't seen that 2 guests became stopped at the same time).
Symptoms:
1. Unable to connect to the damaged guest VM: ssh and ping doesn't work. Web server on the guest become unavailable.
2. In the Hyper-V console I see that CPU utilization for the stopped guest always = 6%. I can't connect to the gust via hyper-V console as well. Only reset helps.
3. I have zabbix agents installed on all guests - I can't see nothing strange before these stops- the guest's CPU is not busy and the guest has enough free RAM.
4. I can't see any errors in Hyper-V logs
How can I solve this problem?