When using Live Migration on a shared CSV volume we experience crashes on both source and target host. After a progress of 70-85% the virtual machine get a State of “stopping”, and there is no further
progress. We are not able to cancel the move or connect to the virtual machine. Other virtual machines running on the cluster are still running, but powering them off or moving them is not possible. Our two Hyper V hosts has to be manually powered off, as
a regular shutdown from the OS does not work.
We started experiencing this problem on the 24th of June after our Hyper V hosts installed updates using cluster aware updating. Ever since then we haven't been able to use live migration functionality. Before the 24<sup>th</sup> live migration
worked with no issues. Uninstalling the update from the 24<sup>th</sup> (KB3161606) changes nothing.
What we have tested so far:
1. We are able to reproduce the issue using generation 2 virtual machines no OS installed on it (i.e. running just in the BIOS), and with OS such as server 2012 R and Ubuntu 14.04. With generation
1 virtual machines we don’t see the problem.
2. The issue occurs if the virtual machine is moved to another host, and files are not moved to another location (directory, disk). If the files are moved the problem does not happen.
3. The tests were done with Hyper V Manager as it allows for changing storage location when doing a live move.
4. Using "Failover Clustering Manager - Move -->Virtual Machine storage" also works fine, but this does not involve changing hosts for the virtual machine.
We have been in contact with the storage service provider, who have verified that the iSCSI storage is configured correctly. We have also been in contact with a Microsoft Partner who has verified that our Hyper V systems have been set up according to Best Practices.
Configuration: Dell PowerEdge R710 hosts with a shared iSCSI storage on a Compellent SC4020.
The only thing that is logged in Event viewer around the time of live migration is the following entry:
The description for Event ID 22040 from source Microsoft-Windows-Hyper-V-Worker cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
%%2147943860
0x800705B4
The locale specific resource for the desired message is not present