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Hyper V role corrupted

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Last Modified: 2012-08-13
When installing updates, our Windows 2008 server hung for ages on one update.    I gave it a hard restart and now the Hyper V role is corrupted.  

We have only one virtual machine that runs on this particular server and it is running just fine - doesn't seem to be affected.  

My question is how do I recover my Hyper-V server role without affecting the Virtualized server it's hosting?   I can guess that I should uninstall the current hyper-v role and then reinstall but I'm uncertain...

Hoping someone can guide me safely through this.

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Svet PaperovIT Manager

Commented:
Since your VM is running what exactlly is corrupted?

The best option will be if you are able to shutdown the VM and export it before trying to fix the Hyper-V.

 Could you give us more details about what doesn't work

Author

Commented:
When I login to the "Hyper V platform server" the Role Hyper-V usually shows the virutalized server and gives me a host of tools that I can use to manipulate the server - including "Export".

In this case, I see under "Roles"     "Error"    - nothing else.  The Role Hyper V isn't even showing.   I can't export the machine because I can't open the hyper -v role and choose "Export".

I'm trying to comb the event logs now for more information to help.

Author

Commented:
  hyper v error
Svet PaperovIT Manager
Commented:
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Author

Commented:
I don't believe I have snapshots - we were advised against using this feature.  But the roles veiw is where I normally see them and this is not available so how can I confirm?

Using a backup is less desirable.   We have backups.  However, the issue came about 4 months ago and we are just now getting to it.  Restoring from a job that precedes the problem would mean restoring 4 month old info....  Maybe it doesn't matter that time has transpired.  But it seems to me it would.

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Commented:
I'm trying to apply this fix.  It looks exactly like what I have / need.   I am waiting for a "maintenance window" this weekend to attempt.  Thanks for patience

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Commented:
When I come back to this server, I see now that the "Data" drive E, where we keep the vhd file, is no longer visible in the "Computer" explorer window of the Hyper-V host?     Yet;  the virtual machine is running, and through my hyper-v management tool on another domain computer, I can see that the virtual machine is still located on this missing E drive!?!   Fortunately, I'm able to safely export the virtual machine but I'm very concerned about how and why the E drive would suddenly not show up?  And how it's possible that the Virtual Server could be running still?

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