Export then Import to a different Hyper-V server

September 29, 2008, 1:09 am

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When I export a VM from one Hyper-V server and try and import it into a different Hyper-V server I get an error 0x80070057 and the event log contains:

Import failed to configure network connection for network card '{ResourceType=10, OtherResourceType="<null>", ResourceSubType="Microsoft Synthetic Ethernet Port"}'. You must modify the connection of all affected network adapters to be able to run the virtual machine. If you imported snapshots and apply any of those snapshots after modifying the connection, you must modify the connection again to be able to run the virtual machine.

 Looking back through the forum I see this has cropped up a number of times but the only solution so far has been to build a new VM with the .vhd files i.e. abandon all attempts to use the export/import facility. Surely this isn't acceptable, is it?

Looking at the .exp file I see it references \\<oldserver> several times, where <oldserver> is the name of the server from which the VM was exported. There are also GUIDs that presumably only make sense to the original Hyper-V server. It must be possible to edit the .exp file and correct these references to make the machine importable to the new Hyper-V server. My somewhat naive attempts to do this manually succeeded only in generating "Import file format error" messages.

If anyone knows how to do this please shout. With VMWare we used to routinely copy VMs to a backup server for fault tolerance, and as things stand I can't do this with Hyper-V.

John Rennie

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no network after reboot

October 10, 2012, 10:53 am

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Hi,

I hope someone will have a fix for me. Every time I reboot a VM, I cannot connect to it using remote desktop and there is no network connection to it.

The only way I can get access is by using the Virtual Machine Connection, Log in to the VM and then after logged in it brings back the network connection and then I can remote desktop to it.

Any help with this will be much appreciated , it's driving me crazy.

Thank you.

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-Mehdi

Cannot start VM insufficient memory when there is enough.

October 2, 2012, 12:11 am

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Hi,

I've seen the above error with 2008R2 servers and i hoped it would be fixed in Server 2012 but i had it again today on my small test machine.

If i allocate memory to a VM that fits well into the physical RAM of the host i sometimes get the following error:

Cannot start VM cannot allocate sufficient memory or something.

My test machine has 16GB Ram if i create two VMs with each 7GB ram sometimes one won't start with the above error.

If i reboot the host i can start them.

This leads me to believe that the disk RAM caching of Windows is tripping up the memory allocation. Because after a reboot the cache gets cleared and i can start them.

Any idea if i can disable the filecaching? I don't need it on a VM host.

Kind regards,

Kor

Hyper-V Guest VM loses internet connectivity randomly/after a period of time.

October 11, 2012, 8:39 am

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First, here is some information that may or may not be relevant:

Host Server

HP Proliant DL120 G7, quad-core, 16GB RAM, 250GB OS drive, 2 1TB data drives in a mirror. (VM guests reside on the mirror)

NIC = HP NC-Series Intel E1q Gigabit Ethernet, driver current.

OS = Server 2008 R2 x64, Enterprise. Roles = Hyper-V, all updates current + SP1 + microsoft update.

SERVER IS HOSTED AT A REMOTE DATACENTER.

Guest Servers

Server 2008 R2 x64, Enterprise. Primary Role = Active Directory/Domain controller, DNS, all updates current + SP1 + microsoft update, CONNECTIVITY PROBLEMS.

Server 2008 R2 x64, Enterprise. Exchange 2010 installed, all updates current + SP1 + microsoft update, joined to domain, CONNECTIVITY DEPENDENT ON DNS.

Server 2008 R2 x64, Enterprise. Exchange 2010 Edge Transport Role installed, all updates current + microsoft update, not joined to domain. External DNS. NO CONNECTIVITY PROBLEMS.

NO GUEST VMs ARE IN PRODUCTION ENVIRONMENT YET. NO NETWORK LOAD IS PLACED ON THEM ASIDE FROM RDP SESSIONS FROM MYSELF. 

Issue Breakdown

Upon installing and configuring guests, connectivity is fine. They can access the internet and the internal network. Upon leaving and returning to work, the DC guest has lost internet connectivity, which in turn causes the Exchange guest to lose connectivity, because it uses the DC for DNS. RESTARTING THE DC GUEST VM DOES NOT RESTORE CONNECTIVITY. Changing connectivity settings for the guest does not restore connectivity. Restarting the host server does not restore connectivity. Reinstalling the host NIC driver does not restore connectivity. Removing the Hyper-V role and re-installing that role does not restore connectivity. Attempting to install the KB in the host that everyone says to install results in the error message stating "...does not apply to this server". I don't think that KB applies in general anyway, as the network load on the host and guests is negligible.

I disabled offloading, to no effect. And, having read another article on here about an hour ago, which suggested switching from auto-negotiation to 1gig full duplex, I tried that (unfortunately) and the network connection went down, which I need for RDP, so now I'm spending money on a support case for our Datacenter techs to log into the server and change it back to auto-negotiation. So, while that's in the works, I can't do anything else on the server until I can establish RDP again, or drive a few hours and access the server directly.

I've been having this issue for the past 3 days, and have been researching for as long, and every solution I've tried, short of going to the server and installing a new NIC, has failed. Is there something I'm missing? Or do I really have to put a new NIC in? (I'm also aware that it's better to have dedicated NICs for my VMs, but it's not an option at this point. I'd like to first be able to confirm reliable operation of the system as a whole before I make further purchases.)

Any thoughts?

host ram problem

October 10, 2012, 6:03 am

≫ Next: HOST UNREACHABLE but its VMs are reachable

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I have installed Hyper-V Server 2008 R2 on my server and on it I run my three virtual machines.

At the beginning I had 4GB physical memory, but now I've upgraded on 8GB. BIOS recognizes 8GB but Hyper-V shows only 3.5gb.

Where did I messed up?

thanks in advance

Jure

HOST UNREACHABLE but its VMs are reachable

September 23, 2012, 1:46 pm

≫ Next: Virtual Networking with external IPs

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I have two Hyper-V Hosts with each machine hosting two virtual machines for a total of six machines, all running Windows Server 2012 RC Build 8400.  I manage all six machines via Remote Desktop Connection from another machine running Windows 8 Consumer Preview.  Two days ago I came into work and could not log into host1, nor could I ping it or detect it via hardware firewall's connected devices report.  I connected monitor/mouse/keyboard to the machine but the screen was black and would not change.  Keystrokes and mouse movement did nothing.  However, the two VMs running on the unresponsive host were perfectly fine.  Additionally, host2 and its VMs were accessible and running fine.

I shut down the VMs running on host1 then I power cycled the machine.  It started back up, and I was able to log into it via RDP on my Windows 8 machine.  I could not find what caused the problem.  Since I was able to recover system I moved on.

Today the same thing happens.  Host1 unreachable.  I have not accidentally assigned all the nics to the vms and failed to permit sharing with the host.  Other than that, I cannot think of what would cause this problem.  Since it happened again I need to fix this - does anyone have any tips?

Thanks 

Virtual Networking with external IPs

October 11, 2012, 1:58 pm

≫ Next: Windows 8 : Hyper-V Platform unchecks

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Hi.

I have tried to search for this answer, but cannot find it.

I am trying to configure one host with tre VM running, all running MS 2008 R2.
I have on physical networkadapter connected.
Host is accessible through external IP.

What I am trying to accomplish:

VM1 - serving as AD, DNS.
IP: 192.168.0.2

VM2 -remote desktop services
IP: 192.168.0.3

VM3 -web server
IP: 192.168.0.4

I want to be able to access each of the VM:s on their own public IP (one for the web server, one for the terminal server).

Can I do something like a virtual port forward?
(I am not able to do a port forward on the firewall)

Should I have multiple network interfaces on the VM:s?

Thanks

Windows 8 : Hyper-V Platform unchecks

October 9, 2012, 11:31 pm

≫ Next: HyperV VMs go missing

≪ Previous: Virtual Networking with external IPs

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Hi all,

after enabling all Hyper-V Features within Windows 8 (RTM) the Checkbox for "Hyper-V platform" unchecks itself.

After enabling the Hyper-V platform Feature and restarting the PC it does some restarts by itself. As soon I can logon again I realized all Features but the Platform are checked and installed.

When enabling the Checkbox again - without restarting - but looking again into the selected Features its unchecked automaticly. 

I already checked the SLAT and DEP Settings. Assuming wrong or missing BIOS Settings would gray out the Checkbox, but it is not.

I have no ideas anymore.

Thanks for ideas,

Jan

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HyperV VMs go missing

October 11, 2012, 1:46 pm

≫ Next: Windows Server 2008 R2 SP1 on windows 8 Hyper v - Network connection

≪ Previous: Windows 8 : Hyper-V Platform unchecks

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We have a HyperV 2008 cluster and every so often the VMs will go missing from the network. You go to the console and it says you can not use your mouse, and the screen is small, you can not resize it and it has no bars to move up and down, so all you can see is the top left hand side of the screen.

We can recue it by migrating it from one machine to the other and its then fine but we would like to stop it happening in the first place. Any one seen this before?

Windows Server 2008 R2 SP1 on windows 8 Hyper v - Network connection

October 11, 2012, 1:07 pm

≫ Next: One host on a virtual cluster configuration

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I have setup Hyper-V on Windows 8 Pro and created a VM of windows server 2008 R2 SP1.

Created a virtual internal switch and on the vm if I apply a static IPv4 address to the network adapter, ok and close it and go back into the properties its all blank, the only thing that is saved is the primary DNS IP. 

This works fine in server 2012 and windows 7 vm's, just having the issue with server 2008 R2

Any help would be appreciated. and let me know what other information you require.

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Alan Stevenson-Galvin

One host on a virtual cluster configuration

October 2, 2012, 9:38 am

≫ Next: Virtual home environment/lab | Build advice requested

≪ Previous: Windows Server 2008 R2 SP1 on windows 8 Hyper v - Network connection

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I am a beginner and starting to plan a Hyper-V failover cluster type configuration using 2 hosts. The problem is, one of the host is already configured with a vm that is currently in production running a critical app.

I was hoping to be able to just configure the other host with a vm using an external storage, configure it as a cluster, and then later down the road add the production host. Is this do-able?

Thanks.

Virtual home environment/lab | Build advice requested

October 2, 2012, 4:54 pm

≫ Next: Where should I turn on RemoteFX?

≪ Previous: One host on a virtual cluster configuration

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Hi folks, i'm building my first virtual environment and it will be a home build. For breadth and depth in my field i want to emulate a small enterprise so i will be running AD, DC, file shares, SharePoint, mobile device management and enrollement (future), as well as a combination of home centric things like media storage/conversion/cataloging, iTunes, home automation, etc... My personal machines (desktops, laptops, tablets, smartphones) may also be joined to the domain to test mobile device management, certificate enrollement, etc. Other uses also include vulnerability assessment/penetration testing vm's like BackTrack, Samurai, and other custom Linux builds. I also need to be able to do port monitoring and traffic interception on any mobile devices for mobile pen testing.

So having said that...this is what i'm considering buiding:

Processor (x2) Intel CM8062107185405 Xeon E5-2630L 2.0GHz LGA2011
Memory (x2) Kingston 32GB (4 x 8GB) 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 Server Memory DR x4 Model KVR16R11D4K4/32
Hard drive (primary)...may possibly do SSD instead Western Digital VelociRaptor WD4500HLHX 450GB 10000 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Hard drive (NAS) x 2 Western Digital Caviar Black WD2002FAEX 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Motherboard Asus Z9PE-D16 Dual LGA2011 Xeon/Intel C602-A PCH/4GbE/SSI EEB Server Motherboard (ASMB6-IKVM)
Power Supply SeaSonic X Series X-850 (SS-850KM Active PFC F3) 850W ATX12V v2.3 / EPS 12V v2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply
Case Cooler Master Cosmos II Ultra Tower Computer Case with Aluminum and Steel Body (RC-1200-KKN1)
NAS QNAP TS-869L-US 8Bay Intel D2700 2.13GHz Dual-Core CPU 1GB SATA NAS

I plan to boot/store all my VMs from the NAS so that's why i'm not too concerned about local storage on the server/workstation.
Thoughts? Any major/obvious concerns? Anything obvious i'm missing? I know the preference is to go with some OEM (e.g. HP, Dell, etc...) to ensure compatibility, drivers, etc... but I really feel like i can save some money if i build it myself. Something similarly spec'd would cost me ~6k from OEM, but i can build (not counting NAS costs) for about 3k.

I really appreciate anyone's input and/or suggestions.

Where should I turn on RemoteFX?

October 2, 2012, 5:48 pm

≫ Next: problem with internet in Virtual Machine in Windows Server 2008 R2

≪ Previous: Virtual home environment/lab | Build advice requested

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Here is what I have.

1 physical server running 2012 with a hyper-v role.

created several guest VM, 1 being a win 2012 set up as a terminal server (remote desktop services)

So where should I install the RemoteFX role (or feature)?  On the physical server, or the guest VM?

problem with internet in Virtual Machine in Windows Server 2008 R2

September 29, 2012, 6:45 am

≫ Next: Mixing CPU types with Hyper-V

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Hello,

I am using Windows Server 2008 R2, I have Statis IP configured in one of my Ethernet NIC which I am sharing on external Ethernet NIC. When I install Hyper V and create one Virtual Machine, The internet on Virtual Machine is not working. I have tried all the possible steps but yet did not got any appropriate solution.

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Wasif K Niazi

Mixing CPU types with Hyper-V

October 4, 2012, 5:12 am

≫ Next: How to delete .avhd files ? Checkpoit was deleted when machine running

≪ Previous: problem with internet in Virtual Machine in Windows Server 2008 R2

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Is it possible/not advised against mixing different processor generations within a Hyper-V environment

Customer wants to know if he can add a HP Gen8 into an existing Gen7 cluster

Gen8 has E-series CPU and Gen7 has X-series

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How to delete .avhd files ? Checkpoit was deleted when machine running

October 5, 2012, 3:55 am

≫ Next: Error "Hypervisor not started"

≪ Previous: Mixing CPU types with Hyper-V

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I have deleted VM machine checkpoints in VirtualMachine manager 2012 when machine WAS RUNNING! but .avhd files are not deleted.

This .avhd files I found on disk and i need more diskspace. How I Can delete them? Can I manualy delete this files?

Now in checkpoint manager I can not see any checkpoints

thanks

Error "Hypervisor not started"

October 6, 2012, 3:06 pm

≫ Next: Hyper-V Partner Virtual Machines, i.e., affinity

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I have a Intel Core 2 Quad Q6600 with virtualization enabled in the BIOS. But when I try to start a virtual machine in Hyper-V Manager I get this error message "Hypervisor not started". Any idea why this is happening?

Hyper-V Partner Virtual Machines, i.e., affinity

October 8, 2012, 4:30 pm

≫ Next: Hyper-V 3.0 Networking Best Practices

≪ Previous: Error "Hypervisor not started"

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Has anybody figured out how to configure this setting? I see it mentioned in some of the documentation online but can't seem to figure out how to set this up.

Hyper-V 3.0 Networking Best Practices

October 9, 2012, 10:44 am

≫ Next: You cannot browse the local file when connecting to a remote Hyper-v server

≪ Previous: Hyper-V Partner Virtual Machines, i.e., affinity

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Is there any best practice networking guide available for Hyper-v 3.0 ? dedicating NIC for Live Migration still recommended?

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Karthik R

You cannot browse the local file when connecting to a remote Hyper-v server

October 11, 2012, 11:58 am

≫ Next: Windows Server 2012 Hyper-V managment service shutsdown when connection to RDS connection broker

≪ Previous: Hyper-V 3.0 Networking Best Practices

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Yesterday i tried to perform an upgrade from hyper-v 2008r2 (Servercore) to hyper-v 2012 (Servercore), that didn't work. So started exporting the machines to a local disk on the same machine, then performed a clean install of hyper-v 2012 (Servercore). After the installation completed i tried to import the machines back into hyper-v 2012. When i hit browse in the import wizard the following error appears : You cannot browse the local file when connecting to a remote Hyper-v server

So after viewing the error, i tried to browse the hyper-v server and i could see the disk containing the exported virtual machines. After that i checked my ipconfiguration, ipconfig /flushdns,disabled firewall on both the server and client but it still didn't work.

Im using the hyper-v manager installed on Windows 7, this shouldn't be the problem i guess? Then tried to manually fill in the path to the exported machine folder (\\192.168.1.200\e$\VHD\Server 2008 R2 DC1) Then the following error appears : General acces denied error. Could this be the problem? While trying to browse does it use the hyper-v machine account to acces the ''hidden share''? This kinda make sense, if the machine cannot browse the shared folders on the hyper-v server it gives the error above?

Edit : created a share on one of the disks, but the same error appears : You cannot browse the local file when connecting to a remote Hyper-v server