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Hyper-V Cluster on Windows 2008 R2 creating duplicate files

Hi,

I have an issue which I haven't been able to find anyone else post anywhere about.

We have a Windows 2008 R2 cluster using Hyper-V.

Every now and again, virtual machines cannot be migrated manually between the hosts and it automatically fails if it needs to move them for whatever reason (such as a host going down).

Overview of our setup (same as everyone elses basically)

All virtual machines are stored in C:\ClusterStorage\Volume1(or2)\VirtualMachines\

In C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines on each host we have shortcuts for their XML configuration files (SYMLINK) and this corresponds correctly to what virtual machines are on that host - and the shortcuts point to C:\ClusterStorage\Volume1(or2)\VirtualMachines\ (they are correct).

The issue is, when we encounter the error and we cannot migrate a certain virtual machine, one of the HOST machines in our cluster actually has a duplicate XML file and folder which correspond to the virtual machine we cannot migrate.

As soon as I delete the actual XML file and folder from there, it migrates without an issue.

I don't know why it is every now and again placing that file in C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines instead of the correct location of C:\ClusterStorage\Volume1(or2)\VirtualMachines\ with a shortcut to the XML file in C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines.

As you can see in my attached screenshot - I just moved the offending XML files and folders into a folder called newfolder.

I am not sure if this issue is due to our hyper V manager having it's default locations for config files and virtual machine files still the default eg:

Virtual Hard Disks: C:\Users\Public\Documents\Hyper-V\Virtual Hard Disks (this is empty anyway)

Virtual Machine Configuration Files: C:\ProgramData\Microsoft\Windows\Hyper-V (this is where all our configuration file shortcuts are going and the offending XML file duplicates and folders).

Should I be changing these default locations? We have several clients setup the same and none present the current issue.

We backup with VEEAM and I don't know if this may be linked.

In the event logs we receive errors 4096
The Virtual Machines configuration F7DB08A6-DD45-4C87-853D-76712FFF0330 at 'C:\ClusterStorage\volume2\virtual machines\intranet' is no longer accessible: The file cannot be accessed by the system. (0x80070780)

and 16300
Cannot load a virtual machine configuration: Cannot create a file when that file already exists. (0x800700B7) (Virtual machine ID 8413B873-FC21-4DAB-8DBD-9AD71BDE2858)

Cannot load a virtual machine configuration: The data is invalid. (0x8007000D) (Virtual machine ID 8413B873-FC21-4DAB-8DBD-9AD71BDE2858)

Cannot load a virtual machine configuration: General access denied error (0x80070005) (Virtual machine ID F7DB08A6-DD45-4C87-853D-76712FFF0330)

Thanks
hyper-v-error.JPG
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workingtechnology
Asked:
workingtechnology
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1 Solution
 
workingtechnologyAuthor Commented:
Found the reason

Every time the duplicate file is created in the folder it shouldn't exist in was following a forced reboot of the server at the power.
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workingtechnologyAuthor Commented:
Found the solution myself, but may assist others when trying to find the same problem cause.
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