I run Windows Server 2012 RTM Hyper-V and I can occasionally not access the second virtual hard drive (dynamically expanding VHDX) attached to the VM through the virtual SCSI controller. I can however access the first hard drive that is connected with the virtual IDE controller.
I get the following warning in the event log under “Administrative Events” every 30 seconds when this happens:
- Log Name: System
- Source: Storvsc
- ID: Storvsc
- Message: “Reset to device, \Device\RaidPort0, was issued.”
I get this error once or twice a week and it has caused serious problems since one of the virtual servers that have this problem is a fileserver and the second hard drive contains all the data.
The only quick solution to the problem that I have found is to force the virtual machine to stop using the “Turn Off” feature since a normal shut down does not work (stops at shutting down the event log or similar) and then start the virtual machine again.
You can also wait for about 30 minutes or longer until the disk for some reason becomes accessible again by itself.
My research into this problem shows that:
- Only 2 of the 10 VMs running Windows Server 2012 RTM that I have, have this problem.
- Both these VMs have a second virtual hard drive (dynamically expanding VHDX) that cannot be accessed for 30 minutes or longer.
- Check Disk of the virtual hard drive shows no errors.
- The second hard drive is attached to the virtual SCSI controller.
- I can find no problems at all with the physical storage on the (not related) 4 hosts that I have. The problem exists only in the VMs.
I have now attached the second virtual hard drive to the virtual IDE controller to see if this permanently fixes this problem (i.e. does not happen for at least a week).
Is there something wrong with the virtual SCSI controller or the virtual SCSI device driver that comes with Windows Server 2012 RTM? Does anyone else have this problem?