Restored Hyper-V Virtual Machine Snapshots by error

Hi Everyone,
We are facing a disaster !!, One of our team restored an old Hyper-V Virtual Machine Snapshot by error which erased our recent databases. So i'am wondering is there a miracle to restore that data. Like we can flashback to 3 hour later.
Help is very appreciated !!
Yasser Emad

Hi Yasser,
Unless a snapshot was taken just before reverting back to the old snapshot, or a backup exists, I'm afraid I don't believe there is.
Is this a checkpoint from failover cluster manager or SCVMM?
Kind Regards
Michael Coutanche
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Log Name:      Microsoft-Windows-Hyper-V-VMMS-Admin
Source:        Microsoft-Windows-Hyper-V-VMMS
Date:          1/10/2014 10:48:46 AM
Event ID:      16000
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Hi CharlesPool,
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Hi Jumar2,
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Thanks for your sharing .
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are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

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Unblock whatever it is that you downloaded.
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Brian Ehlert
http://ITProctology.blogspot.com
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Okay, I turned off hyper-v, went to bios and enabled Intel TXT(LT-SX) Configuration. Made sure that both Virtualization and VT for Direct I/0 are on. Next, I turned on Hyper-V and I create a brand new Virtual Machine call Windows8 and had
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Log Name: Microsoft-Windows-Hyper-V-VMMS/Admin
1) Error: The virtualization infrastructure driver (VID) is not running.
2) Info: Found a certificate for server authentication. Remote access to virtual machines is now possible.
3) Info: Successfully started the Virtual Machine migration connection manager.
4) Info: Virtual Machine Management service is started successfully.
5) Info: The WMI provider 'VmmsWmiInstanceAndMethodProvider' has started.
6) Info: The WMI provider 'VmmsWmiEventProvider' has started.
7) Info: The WMI provider 'VmmsWmiInstanceAndMethodProvider' has started.
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@ThrashZone, Thank you but this is an issue that occurs after it has already been up and running.
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C:\ProgramData\Microsoft\Windows\Hyper-V\Groups
C:\ProgramData\Microsoft\Windows\Hyper-V\Groups Cache
C:\ProgramData\Microsoft\Windows\Hyper-V\IMAGEBASE
C:\ProgramData\Microsoft\Windows\Hyper-V\Persistent Tasks
C:\ProgramData\Microsoft\Windows\Hyper-V\Planned Snapshots
C:\ProgramData\Microsoft\Windows\Hyper-V\Planned Snapshots Cache
C:\ProgramData\Microsoft\Windows\Hyper-V\Planned Virtual Machines
C:\ProgramData\Microsoft\Windows\Hyper-V\Planned Virtual Machines Cache
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types
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C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines Cache
C:\ProgramData\Microsoft\Windows\Hyper-V\Groups\groupregistry.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Groups Cache\groupregistry.vmcx
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C:\ProgramData\Microsoft\Windows\Hyper-V\IMAGEBASE\Virtual Machines
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C:\ProgramData\Microsoft\Windows\Hyper-V\IMAGEBASE\Virtual Machines\DC334ED4-B8DF-4EFB-A6F0-10C508E7BA54
C:\ProgramData\Microsoft\Windows\Hyper-V\IMAGEBASE\Virtual Machines\DC334ED4-B8DF-4EFB-A6F0-10C508E7BA54.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\IMAGEBASE\Virtual Machines\DC334ED4-B8DF-4EFB-A6F0-10C508E7BA54.VMRS
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\06FF76FA-2D58-4BAF-9F8D-455773824F37.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\118C3BE5-0D31-4804-85F0-5C6074ABEA8F.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\146C56A0-3546-469B-9737-FCBCF82428F4.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\19839BFF-6F04-4B24-B4B5-1AFCCBE729DE.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\353B3BE8-310C-4CF4-839E-4E1B14616136.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\4764334E-E001-4176-82EE-5594EC9B530E.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\4EA4F71F-16E6-4250-99A8-A2315332CC64.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\6A45335D-4C3A-44B7-B61F-C9808BBDF8ED.vmcx
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C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\72027ECE-E44A-446E-AF2B-8D8C4B8A2279.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\78AA0C27-B2BD-45BA-83D1-5F2A8C4C6656.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\7951A5ED-8DC5-42D7-AA8C-9F14C54CEB84.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\B637F347-6A0E-4DEC-AF52-BD70CB80A21D.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\BDE5D4D6-E450-46D2-B925-976CA3E989B4.vmcx
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C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\D92D268E-9AA8-49DD-8C7D-821CEFB5F597.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\DACDCF3F-6F67-4EB8-A4D0-5D93B48A2468.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\ED28BF6C-B698-4513-B8F4-7BDD01E006A2.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Resource Types\F6293891-F32F-4930-B2DB-1A8961D9CB75.vmcx
C:\ProgramData\Microsoft\Windows\Hyper-V\Snapshot Groups\groupregistry.vmcx
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C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines Cache\DC334ED4-B8DF-4EFB-A6F0-10C508E7BA54.vmcx
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Create Hyper-V Virtual Machines with Windows PowerShell searching on hostname

Dear,
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Example:
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Juste use :
$vram = 1GB*$vRam
You not need the "
Do you have any error with the creation of the VM?
# Variables
$VMName = Import-Csv "C:\HyperV\input.csv"
$VHD = 40GB
$VMLOC = "C:\HyperV"
$vSwitch = "External"
$ISO = "C:\ISO\WinServer2012R2.iso"
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[int64]$vRam = $vm.vram
$vram = 1GB*$vRam
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Set-VMDvdDrive -VMName $VMName -Path $ISO
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# Configure Virtual Machines
Set-VMDvdDrive -VMName $VMName -Path $ISO
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Error message
New-VM : '003' failed to modify device 'Memory'. (Virtual machine ID 8F5F32D7-F1A0-4A68-8B01-CA6661869A1E)
Invalid startup memory amount assigned for '003'. The minimum amount of memory you can assign to this virtual machine is '32' MB. (Virtual machine ID 8F5F32D7-F1A0-4A68-8B01-CA6661869A1E)
A parameter that is not valid was passed to the operation.
At line:20 char:5
+ New-VM -Name $VMName -Path $VMLOC -MemoryStartupBytes $vRam -NewVHDPath "$VM ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (Microsoft.HyperV.PowerShell.VMTask:VMTask) [New-VM], VirtualizationOperationFailedException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.NewVMCommand
Set-VMDvdDrive : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:23 char:5
+ Set-VMDvdDrive -VMName $VMName -Path $ISO
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Set-VMDvdDrive], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.SetVMDvdDriveCommand
Start-VM : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:24 char:5
+ Start-VM $VMName
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Start-VM], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.StartVMCommand
Set-VMDvdDrive : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:27 char:5
+ Set-VMDvdDrive -VMName $VMName -Path $ISO
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Set-VMDvdDrive], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.SetVMDvdDriveCommand
Start-VM : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:28 char:5
+ Start-VM $VMName
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Start-VM], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.StartVMCommand
New-VM : '003' failed to modify device 'Memory'. (Virtual machine ID C0FC835E-36D4-462E-BD21-69A75A808E2F)
Invalid startup memory amount assigned for '003'. The minimum amount of memory you can assign to this virtual machine is '32' MB. (Virtual machine ID C0FC835E-36D4-462E-BD21-69A75A808E2F)
A parameter that is not valid was passed to the operation.
At line:20 char:5
+ New-VM -Name $VMName -Path $VMLOC -MemoryStartupBytes $vRam -NewVHDPath "$VM ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (Microsoft.HyperV.PowerShell.VMTask:VMTask) [New-VM], VirtualizationOperationFailedException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.NewVMCommand
Set-VMDvdDrive : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:23 char:5
+ Set-VMDvdDrive -VMName $VMName -Path $ISO
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Set-VMDvdDrive], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.SetVMDvdDriveCommand
Start-VM : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:24 char:5
+ Start-VM $VMName
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Start-VM], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.StartVMCommand
Set-VMDvdDrive : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:27 char:5
+ Set-VMDvdDrive -VMName $VMName -Path $ISO
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Set-VMDvdDrive], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.SetVMDvdDriveCommand
Start-VM : A parameter is invalid. Hyper-V was unable to find a virtual machine with name 003.
At line:28 char:5
+ Start-VM $VMName
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (003:String) [Start-VM], VirtualizationInvalidArgumentException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.StartVMCommand

Modify the headless options of the BIOS on a Hyper-V Virtual Machine

Hi everyone,
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"Some systems which have a video display device can be configured to report themselves as headless via the configuration, usually in the system BIOS."
I believe this is my issue, by default a Windows Hyper-V virtual machine reports itself as headless, therefore you need to ignore this configuration on startup or ESXi thinks there is a display error.
My question is, can I fix this from the virtual machine side? Can I modify the virtual machine so that it does NOT report itself as headless?

Hi,
The Hyper-V is the full virtualization technology, and it must installed on bare-metal computer, personal experience, if you are using the WDS with Hyper-V environment to
deploy the Windows system, the performance will lower than the physical computer and you must choose the corresponding method if you have the different environment.
More information:
Windows Deployment Services Overview
http://technet.microsoft.com/en-us/library/hh831764.aspx
Hope this helps.
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How to find out whether a program is running in Hyper-V virtual machine or not?

If I want to make a program which only running in Hyper-V virtual machine, how can I find out whether
the program is running in Hyper-V virtual machine or not?

https://gallery.technet.microsoft.com/scriptcenter/Determine-if-a-computer-is-cdd20473
http://social.technet.microsoft.com/wiki/contents/articles/942.hyper-v-how-to-detect-if-a-computer-is-a-vm-using-script.aspx
http://www.grouppolicy.biz/2014/01/how-to-target-group-policy-to-virtual-computers/
Mike Crowley | MVP
My Blog --
Baseline Technologies

Hyper v virtual Machines should have installed integrated services or not ?

Hi
In my prodcution found hyper v virtual machines have no integrated services was installed should we installed on production servers is any impact if we didnt installed them.
if it should installed then what is the best approch to installed.
Thanks

You posted in the Group Policy forum...
That's a good question for the Hyper-V forum:
http://social.technet.microsoft.com/Forums/en-US/home?forum=winserverhyperv
Don
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�Unable to create the virtual machine. The error was -4�

I have a VS2003 C# application, which call JACE (a JNI wrapper) through C++ mixed mode to use JAVA object�s functions.
Because the natural of our JAVA program it must be able to reach maximum heap size of 512MB, we set it during the startup of JVM by using �-Xmx512M� parameter.
It worked well with a small PC (Dell Optiplex GX750 and Shuttle Xpc ) with only 512MB physical memory. We have about 50 machines running the application in the production.
Recently, one of our customers installs the application to a larger PC ( Shuttle Xpc with different model), which has 1 GB of physical memory. The application started throw exception from JVM. The error message is �Unable to create the virtual machine. The error was -4�. I checked with JNI return code and found that -4 mean �not enough memory�.
I did some experiment by running the application with 2GB PC, 1 GB PC, 1GB laptop, 512MB PC. I don�t found relationship between how much �maximum heap size� can be assigned and how much �physical memory� is available (reading from task manager). The 2GB machine can take only 128MB of �maximum heap size� However, 1GB machine can take up to 300MB of �maximum heap size�.
I also use program like ImageJ (http://rsb.info.nih.gov/ij/) to test maximum heap size for it. I found that ImageJ can take 512MB maximum heap size without problem. It can even take 1024MB of maximum heap size.
I have created a small program to duplicate this problem. Although it use exact the same code to start JVM up, it can go up to 650MB heap size for both 2GB and 1GB PC.
This is puzzling. Does anyone know what are factors determine how much �maximum heap size� can be set for JVM from JNI?
Software used
Windows XP SP2
Visual studio.net 2003 SP1 (the problem also occurred without SP1)
.NET Framework 1.1 SP1
JACE 1.1rc1_05
JRE 1.5.07 (also tested with JRE 1.5.09 and 1.6.0 beta)

Do you resolve the problem? If so what was the fix?
I have been getting the Java Virtual Machine Launcher error message Could not create the virtual machine when attempting to run an Oracle application that uses JNLP via a browser. Even clicking on componets such as javaw.exe produces the error message. In conjunction with receiving the error message, the application that I am working with will not launch.
I had JRE 5u10 and J2RE 1.4.2u13 installed and thought that installing JDK 5u17 may resolve the issue. I removed JRE 5u10 and J2RE 1.4.2u13 and installed JDK 5u17 (and the included JRE 5u17.) The error message was still there.
I have unistalled (via Add/Remove programs) and reinstalled (via both Win off-line and on-line) JDK 5u17 and JRE 5u17 many times.
During the uninstalls I have received a Java Web Start 1.5.0_17 bad installation error invoking JVM error message.
I have restarted the machine also.
There are some remains of J2RE 1.4.2u13 still on the machine even after the 1.4.2u13 uninstall. The Java\j2re1.4.2_13\lib folder remains.
I am running Win XP SP2 and IE6 SP2.
Note: I cannot use Java 6 since the application that I am working with is Java 5 based.

Hyper-v virtual machine management in status stopping

Hello,
I had a problem with one vm showing status backing up.
I read on TechNet that restarting the hyper-v virtual machine management service would solve the problem.
I have tried to shutdown the service but it now says status stopping...
How long time does it take to shutdown the service? Is there anything I can do to hurry it up?
ps. I have production vm running on the host that I can't take down...
Regards
Roger

Hi Roger,
I also tested in my lab to disable that service forcibly ,then I found that it will leads the VMs to unexpected shutdown .
Based on this ,it seems that restarting the host is necessary .
Best Regards
Elton Ji
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interview project would be greatly appreciated if you have time.
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How to connect USB external Harddisk to Hyper-v virtual machine

Hi,
We are running hyper-v server 2008 R2, we have external USB harddisk connected in hyper-v Manager, we are not able connect this USB to virtual machine.. is this option is available in hyper-v? if no is there any document from microsoft stating the same?
Regards
Asha

Hi,
Unfortunately, USB is not supported on a Hyper-V virtual machine. You can perform the following suggestions:
1. Offline the USB hard disk on the Hyper-V host machine and connect it to the virtual machine as a pass-through disk(if the USB hard disk is support)
For more information, you can refer to:
Configuring Pass-through Disks in Hyper-V
http://blogs.technet.com/b/askcore/archive/2008/10/24/configuring-pass-through-disks-in-hyper-v.aspx
2. You can also use some USB over Ethernet application.
Best Regards,
Vincent Hu

Restored Hyper-V Virtual Machine Snapshots by error

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