Hello ....
I have a Server 2008 R2 Hyper-V with 5 machines 4 machines with a server 2003 and one 2008 R2 machine I have a very strange phenomenon server 2003:
Despite running SHADOW COPY the drive and I see that is through the VSS backup copy:
And I see that timing was backed up:

I'm trying to recover does not appear to me no point of return, but all empty:

Hi Guys,

We have a Hyper V 2012 Server in production where we have 2 disks 

disk 0 has hyper V C:\ and Hyper V F:\ with a virtual dynamic drive called F:\ as well which has only 3% left which is the F:\ of the Virtual Server

disk 1 has hyper V D:\ with 2 Fixed Disks of the Virtual machine OS Fixed Disk and SQL Data Fixed Disk

Issue we have is we probably now need to convert to Fixed Disk for F:\ Dynamic Disk as it only has 11GB Free on the physical partition. How much space do I need to convert? What is the best way to do so?

Was thinking of connecting a 2TB External USB Drive and converting to this drive and then moving old dynamic disk to that drive as well then restoring fixed hard disk to existing Physical Hyper V partition F:\ where it should no longer grow and stay at 3% 11GB Free?

Will that work?

Also another question what happens when Physical F:\ becomes full does HyperV stop even though the Virtual Machine Config is on the other partition? F:\ just has the virtual F:\ drive which contains user data only. OS lives on Phyiscal D:??

Regards,

Shane

Hello everyone,

Some of you may remember my thread I started recently about our performance issues with RAID5. I am in the process of rebuilding our array using RAID10 for better performance and I've hit a roadblock and need some assistance. I have searched everything the internet has to offer on this subject and nothing seems to be working.

After I copied all of our VHDs off to another storage location, I blew away the old RAID5 array and rebuilt the array using the following settings:

RAID10
4x2TB WD RE4 Disks
64K Stripe size
WriteThru

When I got into Server 08 R2 - Disk Management I had to initialize the disk and I did so as a GPT disk so I could use all 4TB of usable space that my array gave me. I formatted it using default NTFS settings. When I copied one of my VHDs back to the disk and attempted to create a VM attaching the VHD as the disk, I was greeted with the dreaded "The sector size of the physical disk is not supported". Everything I have found on the internet suggests that my problem is I have 4k drives, and 512 is the sweetspot... my problem with that is my drives are 512! I also read that I should convert the disk to dynamic in Windows, I tried that as well, and recreating the volume with just about every option for allocation size possible with similar results. Looking at my array settings in the web management utility shows that the block size is indeed 512.

I can't understand why I'm having this issue, I just Rebuilt the array again and I'm currently doing a full init instead of a fast init to see if that has an effect but I don't expect it to. I need you once again resident Hyper-V experts, please help me.

Hi there,

Currently I have a Windows Server 2012 Hyper-V Guest hosted on Windows Server 2008 R2. Whenever shadow copy is ran by the host the guests network connection disconnects. This happens everyday as the host is setup to backup the guest daily.

Here's some event log details:

• The Volume Shadow Copy service entered the running state. (EventId 7036)
• The Microsoft Software Shadow Copy Provider service entered the running state. (EventId 7036)
• Miniport NIC 'Microsoft Hyper-V Network Adapter' disconnected (EventId 13)
• The system time has changed to ‎2012‎-‎10‎-‎16T09:14:21.735000000Z from ‎2012‎-‎10‎-‎16T09:04:54.158702100Z.
  Change Reason: An application or system component changed the time. (EventId 1)
• Isatap interface isatap.{C82612AC-DCC1-42AE-8A12-587FBECC03E4} is no longer active. (EventId 4201)
• Miniport NIC 'Microsoft Hyper-V Network Adapter' connected (EventId 12)
• The WinHTTP Web Proxy Auto-Discovery Service service entered the running state. (EventId 7036)The TCP/IP NetBIOS Helper service was successfully sent a stop control.
  The reason specified was: 0x40030011 [Operating System: Network Connectivity (Planned)]
  Comment: None (EventId 7042)
• The TCP/IP NetBIOS Helper service entered the stopped state. (EventId 7036)
• The TCP/IP NetBIOS Helper service entered the running state. (EventId 7036)
• Isatap interface isatap.{C82612AC-DCC1-42AE-8A12-587FBECC03E4} with address fe80::200:5efe:5.152.205.212 has been brought up. (EventId 4200)
• The Volume Shadow Copy service entered the stopped state. (EventId 7036)
• The Volume Shadow Copy service seems to start and stop all day long at random times. 

Hopefully this is enough information. Really hope someone can help.

Thanks!

Hello All,

I'm lacking with hardware knowledge so I hope I can find some help here regarding the processor and motherboard.

My current home lab (3 physical servers) for vSphere and Hyper-V is slowly dying. I'm looking into buying something more current, but as I've got very limited $$ resources I need a box that would allow me to run a nested environment in either of the options:

- Windows 8 & VMware workstation, on top of that few VMs and 2 / 3 virtual hosts (HV2012/ESXi), on top of that a number of VMs to test Clustering/HA etc

or

- ESXi, on top of that VMs and virtual hosts (HV2012/ESXi), on top of that a number of VMs to test Clustering/HA

If possible, I'd like to use Intel i7-870 processor that I have at home, but I'm not sure if it's going to be enough for the job? If yes, please advice on the motherboard. Otherwise, please advice on hardware configuration or oem boxes.

Thank you!
A.

I have a brand new server asus rs700-x7/ps4

2 Xeon E-5-2609

32 gig of ram

2 hard drive in miror

when I boot on the installation CD of Microsoft Hyper-V Server 2012

after loading file 

there is a small blue windows logo then I have a sad face with the message:": ( Your PC ran into a problem and need to restart" for half a second and the server restart

and again -again...

Any idea?

Philippe Meloni

Question:

I have a server with five VMs on it; it's currently running 2008 R2 Enterprise. I want to upgrade it to 2012 Datacenter. It's got a 2 TB direct-attached RAID 10 array, and the VMs have consumed approximately half of this space. As you can imagine, exporting the VMs will take a few hours. It will minimize my downtime if I can just shut down the VMs, wipe 2008 and install 2012 (I happen to know that 2012 will install on these servers in about 20 minutes), install the Hyper-V role, and then fire the VMs back up. A full export of all the VMs will significantly longer than this.

The RAID array is partitioned, so there is 100 GB for the host OS and the rest of the space is for the VMs. I'd like to wipe the host OS partition and do a clean install of 2012. My question is whether or not there is a quick way to bring the VMs back without going through the process of exporting them to a different host and then bringing them back over to the original server. Is it possible to just recreate the shortcuts (that live in the "C:\ProgramData\Microsoft\Windows\Hyper-V\Virtual Machines" directory) to the XML files for the VMs that live on my second partition (which is the D drive)? This would speed up the process dramatically for me. I can live with 30 minutes or so of downtime, but 6+ hours is a bit excessive...

Thanks,

-kb

I'm running out of room on my Server running Hyper-V, but I'm thinking of adding 16 900GB drives and I'm curious if this will be supported in Hyper-V.

Please help....

I have a windows 8 machine that I want to install hyper-v on.  I simply went to the control panel and enabled it from the turn windows features on or off.  So what I have is the Hyper-V Management Tools, but not the Hyper-V Platform.

When I try to connect to a server, I select local computer and get a message telling me that Hyper-V has not been installed on computer localhost.  I thought windows 8 shipped with Hyper-V?

Robotuner

Hi, I just set up a server to test Hyper-V server 2008 R2.  Right now as it is, the server has (2) 8-core 2.0 ghz AMD opteron processors, 64gb DDR3 RAM, and 3 1TB 6.0gbps SAS HDD (RAID 1).  My configuration was drive C:\ = 100gb E:\ = 900gb.  i will also be attaching a JBOD consisting of 12 3TB 6.0gbps ES HDD's.  I am still confused however about the 2TB limit in windows.  I aim to create a few virtual machines that have 4TB in space and i just wanted to know if there was anything specific that i would have to do to accommodate this?  any help would be appreciated.

Thanks

Hello,

I've got 3 VM's running on a Server 2008 R2 host.  All was great for about 6 months.  Now when I connect to any of the VM's through the local Hyper V manager I stay connected for about 45 seconds at a time and then get disconnected and prompted with a dialogue box that asks if I want to reconnect or exit.

It happens on all three VM's.  There are 2 Server 2003R2 VM's and one Server 2008 VM.  Same behaviour on all.

I have tried restarting the host and the VM's.  I've tried logging into the host as a different user.  I have tried "run as administrator" on the HyperV Manager.

The disconnection occurs whether i'm logged into the VM or just at the logon screen.

Can't find any information on the web and the only other thread I found was a bad router so not sure what is next

I'm logging onto the host directly rather than through RDP just to make sure that wasn't a cause either.

Thanks for any suggestions.

Jason Schraefel

Hi,

How I can disable time sync for guest VM with host when I rebote VM? I read this article, but I didn't find how to stop sync after reboting. Also this solution proposed by Vincet Hu is inappropriate becouse I need time which was before restart.

Thank in advance!

I am trying to double click and mount C:\Users\Public\Documents\Hyper-V\Virtual hard disks\disk.vhdx but I am getting error "You don't have permission to mount the file." My user has full permissions on the object. Why am I getting this error?

I'm working with a Hyper-V cluster that is fairly new to me, and I am trying (unsuccessfully) to add a new VLAN for use with Virtual Machines.  Apologies in advance for the length of this, but I am not sure what all is pertinent information.

Setup:

• 5 Hyper-V Servers running Server Core 2008 R2 fully patched.
  
• Each system has 4 NICs.  1 for Mgmt, 1 for VMs, 2 for iSCSI.
• Failover Cluster Manager lists just TWO cluster networks.  The Mgmt one, and one of the iSCSI ones.
• There are 26 VLANs configured for use by the VMs.  (They show as 'external' Virtual Networks in Hyper-V Manager's Virtual Network Manager, but are not listed at all in Failover Cluster Manager).  They are all working as expected.
  
• If I drill down to the Virtual Networks themselves in Hyper-V Manager, in the dropdown where you choose the Network Interface, they all are tied to their own uniquely-named interface like this "Intel Pro/1000PL Network - VLAN: <VLAN Name>".  So, in the interface dropdown, there are 30 Network Interfaces (26 VLANs + 4 Physical) listed.  Also, "Allow management operating system to share this network adapter" is enabled on every one of them.
  
• Digging further, I can also see all the VLANs through the Intel CLI tools for the network card (prosetcli).  The names match exactly to what Hyper-V Manager shows.
  

Adding a new Network:

I'm trying to figure out how to add another one.  I have to admit I'm fairly new to Hyper-V, though familiar, in general, with virtualization.  Sort of trying to reverse engineer how these are setup.  Given the fact that these Virtual Networks were tied to an interface with the specific VLAN name already on it, I'm thinking there must be another step to accomplish before we do "New virtual network" in Hyper-V Manager.  I can add another VLAN to the Physical NIC through prosetcli.  I try it and voila, it shows up as a new network interface in Hyper-V Manager.  I feel like I'm on the right track, at least comparable to how the other networks are setup.

Problem is, as soon as I run that command, the new 'interface' gets a DHCP IP address from a server on that network and is automatically added to not only Hyper-V Manager (alongside the rest where I wanted to see it), but also added to the Failover Cluster Manager (where none of the other ones are).  Apparently, all the other VLAN interfaces are obtaining 169.254.x.x (APIPA) addresses, and because of that are excluded from Failover Cluster Manager, in spite of them being on networks that have DHCP servers.  Their exclusion from clustering is flagged as a warning in the Cluster Validation Wizard.

I poked around on the interfaces with the nvpsbind tool and didn't turn up anything out of the ordinary.

This setup seems wrong, so a few questions:

1. Should all of the VM networks show up in Failover Cluster Manager?  What might be the reason for excluding them (if it was intentional)?
   
2. Does the Hyper-V server actually need an IP address on each VLAN it has access to?
3. Why would these other interfaces which are connected to live networks with DHCP servers not be getting DHCP addresses even though they're configured to do so?  Can it be blocked somehow?  By my investigation, they should be getting legit addresses.
   

I'm hoping those questions will be sufficient to get me on the right track.  Thanks in advance.

What is the difference between VMware's RDM and Hyper-V's Pass-through disks?

Thanks

Jason Yates

I'm setting up a new server that Server 2012 Hyper-V will be the host of.

Is there a "best practices" as to how large of partition it should be installed within?

Comments? Suggestions?

Ed

Hello everyone,

I'm new to analyzing crash dumps and so far have come up with that it is likely I had some sort of memory problem or VHD issue with vhdmp.sys.  When it crashed there were many servers re synchronizing with their replicas which is hosted on a SMB 3.0 share on a server 2012 standard edition file server.  I know there likely was a lot of disk I/O and there are 12 VMs on it, 3 of them are rather big ones server about 2,000 people for video streaming and delivery.

System Info:

Mobo: SuperMicro X9DRI-LN4F+ Intel Xeon DualProc

Proc: 2x Intel Xeon-SandyBridge E5-2690-OctoCore

Memory: 8x Samsung 1600 16GB DDR3 2Rx4 [16GB]

Raid Controller: Adaptec 5405 Z (1b4611d360f)

Battery : Adaptec ZMM-100CC

OS SSD: Intel x25-E Extreme (SSDSA2SH064G1)

Raid 50 Array for Hyper-V:

10X Seagate ConstellationES.2 ST33000650NS [3000GB]

10 gbps fiber nic:

SuperMicro AOC-STGN-i2S SuperMicro 10 Gigabit Port

Power Supply: 2x SuperMicro PWS-920P-1R 920W (one is a redundant power supply )

Here is my !analyze -v output from the debugger:

---------------------------------------------------------------------------

Microsoft (R) Windows Debugger Version 6.2.9200.20512 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [C:\Users\MatthewMobile\Desktop\Kernel_0_0_cab_108c3987\120412-14414-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*C:\Symbols*http://msdl.microsoft.com/download/symbols
Executable search path is: 
Windows 8 Kernel Version 9200 MP (32 procs) Free x64
Product: Server, suite: TerminalServer DataCenter SingleUserTS
Built by: 9200.16424.amd64fre.win8_gdr.120926-1855
Machine Name:
Kernel base = 0xfffff801`a528b000 PsLoadedModuleList = 0xfffff801`a5555a60
Debug session time: Tue Dec  4 18:42:51.756 2012 (UTC - 8:00)
System Uptime: 19 days 8:49:44.110
Loading Kernel Symbols
...............................................................
................................................................
..........................
Loading User Symbols
Loading unloaded module list
.................
*******************************************************************************
*                                                                            *
*                        Bugcheck Analysis                                    *
*                                                                            *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck C2, {7, 11c1, 4200016, fffffa80a33cf750}

GetPointerFromAddress: unable to read from fffff801a55e1168
GetUlongFromAddress: unable to read from fffff801a55e11f8
Probably caused by : vhdmp.sys ( vhdmp!VhdmpiFreeVirtualDiskSurface+6f )

Followup: MachineOwner
---------

12: kd> !analyze -v
*******************************************************************************
*                                                                            *
*                        Bugcheck Analysis                                    *
*                                                                            *
*******************************************************************************

BAD_POOL_CALLER (c2)
The current thread is making a bad pool request.  Typically this is at a bad IRQL level or double freeing the same allocation, etc.
Arguments:
Arg1: 0000000000000007, Attempt to free pool which was already freed
Arg2: 00000000000011c1, (reserved)
Arg3: 0000000004200016, Memory contents of the pool block
Arg4: fffffa80a33cf750, Address of the block of pool being deallocated

Debugging Details:
------------------


POOL_ADDRESS:  fffffa80a33cf750 Nonpaged pool

FREED_POOL_TAG:  VHDu

BUGCHECK_STR:  0xc2_7_VHDu

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT_SERVER

PROCESS_NAME:  System

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from fffff801a54fba5a to fffff801a5305d40

STACK_TEXT:  
fffff880`061469c8 fffff801`a54fba5a : 00000000`000000c2 00000000`00000007 00000000`000011c1 00000000`04200016 : nt!KeBugCheckEx
fffff880`061469d0 fffff880`09c4a563 : fffffa80`a33cf750 00000000`00000000 fffffa80`a15b5040 fffff880`09c7c110 : nt!ExDeferredFreePool+0xe86
fffff880`06146ab0 fffff880`09c4a7c5 : fffffa80`a33cf750 00000000`00000000 00000000`00000000 fffff801`a530f4c4 : vhdmp!VhdmpiFreeVirtualDiskSurface+0x6f
fffff880`06146ae0 fffff880`09c4ad8b : fffffa80`a33cf750 fffff880`09c7c110 fffffa80`a33cf918 fffff801`a530f4c4 : vhdmp!VhdmpiDecoupleVirtualDiskSurface+0x16d
fffff880`06146b10 fffff880`09c3ad49 : fffffa80`a33cf8f8 fffff880`09c889a0 fffff801`a550f110 fffffffe`9a5f4400 : vhdmp!VhdmpiHaltActiveSurface+0x123
fffff880`06146b50 fffff801`a533e591 : fffff801`a550f110 fffffa80`977c9b00 fffff801`a52f1300 fffff801`a530f400 : vhdmp!VhdmpiSynchronousWorkerRoutineWrapper+0x19
fffff880`06146b80 fffff801`a52ad535 : fffffa80`64a04660 00000000`00000080 fffff801`a533e450 fffffa80`977c9b00 : nt!ExpWorkerThread+0x142
fffff880`06146c10 fffff801`a52ebe16 : fffff880`03177180 fffffa80`977c9b00 fffff880`03183540 fffffa80`61d0f340 : nt!PspSystemThreadStartup+0x59
fffff880`06146c60 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiStartSystemThread+0x16


STACK_COMMAND:  kb

FOLLOWUP_IP: 
vhdmp!VhdmpiFreeVirtualDiskSurface+6f
fffff880`09c4a563 488b0da61b0300  mov     rcx,qword ptr [vhdmp!WPP_GLOBAL_Control (fffff880`09c7c110)]

SYMBOL_STACK_INDEX:  2

SYMBOL_NAME:  vhdmp!VhdmpiFreeVirtualDiskSurface+6f

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: vhdmp

IMAGE_NAME:  vhdmp.sys

DEBUG_FLR_IMAGE_TIMESTAMP:  5010aaa8

BUCKET_ID_FUNC_OFFSET:  6f

FAILURE_BUCKET_ID:  0xc2_7_VHDu_vhdmp!VhdmpiFreeVirtualDiskSurface

BUCKET_ID:  0xc2_7_VHDu_vhdmp!VhdmpiFreeVirtualDiskSurface

Followup: MachineOwner
---------

---------------------------------------------------------------------------

Thank you all so much for any help, advice or direction!!

Hi Guys

I'm trying to move an Exchange 2010 server I created in Hyper-V 2012 to a Hyper-V 2008R2 Server. The files are in VHD format and I re-created the VM on the 2008R2 server and did not do an Export-Import.

Initially the Server would start up fine but I could not get the network card to work at all and the Disk Manager on the server would not display the drives. 

I then re-inserted the Integration Services disc and it re-applied all the drivers. Now after restarting the server Windows just gets stuck on Preparing to configure windows and doesn't go any further. 

Any ideas?