Hi,

My HyperV server (GUI) host has 3 virtual machines guests - all  of them are critical servers, suddenly the host is unable to connect to local server and thus I am unable to manage 3 virtual machines, however all 3 guests are online are accessible.

I have checked the VMM service and is running fine, i am receiving same error when logged in as a local admin instead of domain admin. Now one of the virtual machines is having problem and I am unable to manage i cannot connect to HyperV from remote system as well. When i logged on to the Server Manager, the automatic refresh is failing as per below,

Manageability from Server Manager is showing following error, Online - Data retrieval failures occured.

Moreover when i click add remove features I receive following error, Server Manager is collecting inventory data. The wizard will be available after data collection finishes. I have not shut down the guests and restarted the host, i fear i might not be able to connect to them as they are critical.

Please note that the host is not in any type of high availability yet, any help on this would really be appreciated, thanks.

Hi,

I'm designing a clustered Hyper-V environment with 2 nodes. I'm using SAN storage (Dell Equalogics) and Dell PE630 servers (8 NICs on each). 

I'm planning to use a converged network for the management, cluster and migration traffic. This will run on a 4-1Gb member NIC team that will have a virtual switch associated with it and invidividual vNICs for each management, cluster and migration. I'll be using bandwidth weight and VMQ weights to ensure QOS. 

For storage traffic I'm planning to create two 2-1Gb NIC teams and set up a virtual switch on top of each. I'll then create a vNIC on each switch. 

The basic diagram looks like this

Clustered Equalogics <----> clustered switches <---> Clustered Hyper-V

Hyper-V Node

(4-NIC Team) ==> vSwitch LAN ==> vNIC1 Cluster, vNIC2 Migration, vNIC2 Management

(2 2-NIC Teams) ==> vSwitch1 SAN1 ==> vNIC1 iSCSI1

                          ==> vSwitch2 SAN2==> vNIC2 iSCSI2

These are my questions about this plan:

- Based on Equallogics' documentation, it's better to have the virtual machines have access to at least two virtual switches so that MPIO can be configured. This is the main reason I'm creating two virtual switches for the storage traffic. Is this really necessary if I'm already teaming the NIC's? I'd rather team 4 NICs and use QOS to ensure equal traffic distribution. This blog post http://www.aidanfinn.com/?p=14509 makes a good point about creating an individual virtual switch per NIC (or at least not driving all traffic through the same virtual switch) so as to ensure full utilization of available bandwidth. I'd greatly appreciate any recommendations on this respect?

- I've looked at numerous blogs and documentation. Some use the -allowmangementOS $true option with the New-VMSwitch command for both the LAN and SAN virtual switches. Some don't enable it at all. For the SAN virtual switch I've read that it is very important to enable -allowmangementOSs so the Hyper-V host can store virtual machines, or other data, on iSCSI SAN volumes. But I haven't found consistency on whether this option should be enabled or not. Can someone point me in the right direction here?

- This question may sound a little silly, but I'm not sure where my public traffic is going through? Should I expect it to pass through the LAN virtual switch?  

Hi I am not able to extract KB977384-DEU. It asks to password. I need a help to get latest password of it.

can someone tell me why i'm unable to create a windows 7 vm in Hyper-V server 2008 r2?

thanks.

FD

Hi,

Just built a Server 2012 R2 Hyper-V failover cluster connected to Equallogic 4110 storage arrays with latest firmware and HIT kits. 
When creating a clone or vm from a template we see that the cluster loses access to the storage csv volume that is hosted on the equallogic storage with the following errors:

Cluster Shared Volume 'Volume1' ('CSV Disk1') has entered a paused state because of '(c0000435)'. All I/O will temporarily be queued until a path to the volume is reestablished.

Can anyone shed any light onto this issue?

Full details below:

Log Name: System
Source: Microsoft-Windows-FailoverClustering
Date: 06/08/2014 09:31:17
Event ID: 5120
Task Category: Cluster Shared Volume
Level: Error
Keywords: 
User: SYSTEM
Computer: SVR1
Description:
Cluster Shared Volume 'Volume1' ('CSV Disk1') has entered a paused state because of '(c0000435)'. All I/O will temporarily be queued until a path to the volume is reestablished.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
<EventID>5120</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>38</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2014-08-06T08:31:17.330643100Z" />
<EventRecordID>36230</EventRecordID>
<Correlation />
<Execution ProcessID="2336" ThreadID="3524" />
<Channel>System</Channel>
<Computer>SVR1</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="VolumeName">Volume1</Data>
<Data Name="ResourceName">CSV Disk1</Data>
<Data Name="ErrorCode">(c0000435)</Data>
</EventData>
</Event>

Microsoft Partner

Hi,

I'm running windows 8.1 as a host machine. I've installed Hyper-V feature and then I installed a windows 7 in a virtual machine.

But the pain point is it does not get full screen because it just hasn't the screen resolution I'm looking for. So changing the resolution is not an option since it says that my total available graphics memory is 8 mb. How can I increase this memory ?

My Hyper-V vistual machin configuration for windows 7 is :

RAM: Dynamic 1024 , CPU: 4 virtual 

I have a problem backing up multiple virtual machines using the -hyperv:comma-delimited_list command, for example:

wbadmin start backup -backuptarget:E: -hyperv:VM1,VM2,VM3 -vssFull -quiet

fails with "the hyper-v component specified is invalid", but is successful if I only list a single VM.

Any ideas gratefully received.

on a backup DNS w2008 R2 server I tried create a new VM.

[Window Title]
New Virtual Machine Wizard

[Main Instruction]
The server encountered an error while configuring hard disk on SEPmW8.

[Content]
You might not have permission to perform this task.

[Close]

when I tried creating v a new Vhd using default or custom folder, I get

[Window Title]
New Virtual Hard Disk Wizard

[Main Instruction]
The server encountered an error trying to create the virtual hard disk.

[Content]
You might not have permission to perform this task.

[Close]

But I verified the admin ID does have full access to the folders. furthermore it belongs administrators, domain Admins, enterprise admins,

What gives? what additional privilege I need to give to the login ID, I tried in vain adding to Virtual machines but got rejected. I also could not locate anything like virtual machines in the active directory,

Btw I finally managed to create a new VM wi/ VHD but still can't create new vhd

------------Platform info ---

the physical quad core Xenon server for backup dns also works as exchange server

has 12 GB RAM, 931 GB Raid 5 storage with 325 GB free.

Hyper-V basic version, managed via Hyper-V manager from Windows 8.1

I have three physical drives (backup drives) that I would like to passthrough to a Windows Server Essentials 2012 R2 VM.

The WSE VM fails to start IF I have more than one physical drive attached to a virtual SCSI controller.

It will start if there is only one physical drive per controller, and once it is started I can add a second disk to one of the controllers without an issue.

Any suggestions? 

If not, I will probably just redo one of the drives as a Virtual drive and forget trying to pass them through as physical drives.

Thanks for any help!

Ross

Hoping the community can help...

I was in the middle of moving a couple of Hyper-V 2012 VMs this afternoon using the standard move operation on the source server (I've done this a bunch of times with no issues, except today).  While moving the VMs, a drive failure occurred in my destination server.  I have since repaired the destination server and am ready to move the VMs as I attempted to do earlier.

Now when I try to move any of the servers I was trying to move earlier (running or not), I get a messagebox that contains the following:

"The move operation completed, but Hyper-V could not delete a temporary version of this virtual machine that was created on the destination computer."

After digging through some logs, I also found this:

Virtual machine migration operation for 'VMname here" failed at migration destination 'destination host here'

I've done some other digging through the programdata folder and others but am still at a loss.  I'm hoping someone out there has some thoughts for me.

Thanks!

I had Both Virtual Box and Hyper-V on the same machine, I decided trying to shut down Hyper-V all the time was too much trouble so I removed VirtualBox.

Since then no machine can get a local IP address from the router.

I have even setup the virtual connections again:

I have various CentOS installs which I installed with generation 1.

I even tried changing the LAN Adapter to a "Legacy" one, but it still fails.

Any advice as to what is going on with this?

Thanks

I'm a bit new to the Hyper-V stuff and I have a few questions about the internals.  Any help is appreciated.

I have a simple Atom 8-core server box with Windows Server 2012 R2 Standard installed with Hyper-V.  I also have a VM with 2012 R2 Essentials to manage the network via AD, DHCP (I find it easier to do this from the server than the router even though Essentials isn't really meant to be set up this way - and I use...), WDS.  Storage is set up with multiple SSD's and hard drives in a tiered Storage Space on the host with ReFS.  The OS drive is just an SSD.

Ok, here's the questions:

1. The system has 4x 1Gb NIC's.  For simplicity sake, I just teamed them all and instead of using the Hyper-V load-balance mode, I chose the auto/dynamic mode.  I figured this would be better because the team is set up with a virtual switch that is shared with the host.  I just figure it's an easy out even though there are no dedicated NIC's for management or such.  Anyway, if the externally-connected virtual switch detects traffic for VM's, does this still connect to the physical NIC's and use up network bandwidth?  Is it better to use Internal virtual switch for VM's to communicate with each other over that virtual 10Gb vNIC (I do a lot of VM deployment and testing via WDS)?  It would seem that I would need 2 NIC's for each VM then: 1 internal, and 1 external for Internet access.  Internet connection sharing is supposed to be insecure and the new RRAS apparently doesn't do this anymore (I remember it from 2003), so neither option looks appealing to me.

2. If I was deploying multiple server VM's, I could go through completely duplicating VM's, but I've been reading some stuff about diskless servers via iSCSI using differencing disks.  There was a doc that mentioned that using differencing disks on Server 2008 R2 is not recommended for production environments.  Is that still true for Server 2012 R2?  Is so, why is the differencing disk option mentioned so formally regarding iSCSI deployments?  Does it make any sense to set up iSCSI Target Server on the VM host with a dedicated internal virtual switch with VM's using DHCP options to PXE boot from said target?

Hi

Environment - HP DL580 G5 running 2012 R2 Hyper V

There are only 2 VM's on this box and the underlying storage is provided by Equalogic.

I have created 2 VM's running 2012 R2 Server with SQL 2012 Enterprise SP2 which are identical apart from one being generation 1 (imported from a 2008 R2 server) and the other being a native generation 2.

My issues is if I increase the memory to 20gb (runs fine on 10gb) on the gen2 server it will crash under load (dbbc checkdb or any other intensive operation).  Gen1 server has no problems running at 20gb.

I am suspecting a numa issue but before I go down this route was wondering if anyone else has seen this.  VMQ's have been disabled on both VM's

Hi All,

Recently I have got server failure. Info from memory dump is following. Cannot find the reason of failure. Please help.

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

MEMORY_MANAGEMENT (1a)
    # Any other values for parameter 1 must be individually examined.
Arguments:
Arg1: 0000000000041289, The subtype of the bugcheck.
Arg2: 00007fff141f4000
Arg3: 000000000000007b
Arg4: 00007fff141f4c01

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

Page 42459e not present in the dump file. Type ".hh dbgerr004" for details

BUGCHECK_STR:  0x1a_41289

DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT

PROCESS_NAME:  vmwp.exe

CURRENT_IRQL:  0

ANALYSIS_VERSION: 6.3.9600.17237 (debuggers(dbg).140716-0327) amd64fre

LAST_CONTROL_TRANSFER:  from fffff801429ec412 to fffff801429c2ca0

STACK_TEXT:  
ffffd000`2796eaf8 fffff801`429ec412 : 00000000`0000001a 00000000`00041289 00007fff`141f4000 00000000`0000007b : nt!KeBugCheckEx
ffffd000`2796eb00 fffff801`428e2c47 : ffff0000`00000000 ffffe000`0559e568 ffffd000`2796ed00 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x19282
ffffd000`2796eb60 fffff801`4292f933 : 00000000`00000000 ffffd000`2796ed00 fffffa80`00000000 ffffe000`0559e568 : nt!MiLocateWsle+0x2b
ffffd000`2796ebb0 fffff801`4292f62e : 00000000`00000000 ffffd000`2796ed00 fffffa80`00000000 ffffd000`2796ec70 : nt!MiTerminateWsle+0x2f
ffffd000`2796ec00 fffff801`428e3c41 : 00000000`00000000 00000000`00000000 fffff580`10804638 00000000`00000000 : nt!MiDeletePageTableHierarchy+0xd2
ffffd000`2796ed70 fffff801`42934989 : ffffffff`ffffffff ffffffff`ffffffff ffffe000`0559e568 ffffe000`019db080 : nt!MiDeleteAddressesInWorkingSet+0x4e1
ffffd000`2796f660 fffff801`42c4e7ab : 00000000`00040000 ffffd000`2796f800 ffffe000`019db080 ffffe000`0559e080 : nt!MiBeginProcessClean+0x9d
ffffd000`2796f6a0 fffff801`42c83ce8 : 00000000`00040000 ffffd000`2796f800 00000000`00000000 fffff801`42cbffca : nt!MmCleanProcessAddressSpace+0x67
ffffd000`2796f700 fffff801`42c18504 : ffffe000`0559e080 ffffc000`0b5f4930 ffffd000`2796f800 00000000`00000000 : nt!PspRundownSingleProcess+0xac
ffffd000`2796f790 fffff801`42d22fc4 : 00000000`c0000005 ffffe000`019db080 ffffd000`2796fb00 ffffe000`019db128 : nt!PspExitThread+0x4c8
ffffd000`2796f8a0 fffff801`428b481a : ffffe000`05393bb0 00000000`00000000 00000000`00000000 00000000`0000000c : nt!KiSchedulerApcTerminate+0x18
ffffd000`2796f8d0 fffff801`429c7bc0 : 000000fb`b5ca40a0 ffffd000`2796f950 fffff801`429694e8 00000000`00000000 : nt!KiDeliverApc+0x2fa
ffffd000`2796f950 fffff801`429ce55a : 00000000`00000000 000000fb`b5d39aa0 ffffe000`00600d00 ffffd000`2796fb80 : nt!KiInitiateUserApc+0x70
ffffd000`2796fa90 00007fff`142165ea : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceExit+0x9f
000000fb`b652fac8 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x00007fff`142165ea


STACK_COMMAND:  kb

FOLLOWUP_IP: 
nt! ?? ::FNODOBFM::`string'+19282
fffff801`429ec412 cc              int     3

SYMBOL_STACK_INDEX:  1

SYMBOL_NAME:  nt! ?? ::FNODOBFM::`string'+19282

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

IMAGE_NAME:  ntkrnlmp.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  52341cf4

BUCKET_ID_FUNC_OFFSET:  19282

FAILURE_BUCKET_ID:  0x1a_41289_nt!_??_::FNODOBFM::_string_

BUCKET_ID:  0x1a_41289_nt!_??_::FNODOBFM::_string_

ANALYSIS_SOURCE:  KM

FAILURE_ID_HASH_STRING:  km:0x1a_41289_nt!_??_::fnodobfm::_string_

FAILURE_ID_HASH:  {e01cf37e-0b3f-17aa-251b-4e0e5b8f0b0f}

Followup: MachineOwner

Hello All

Is it possible to have both routing and NAT on a HNV Gateway ?

I would like to test accessing my v-networks via MPLS and exit to the internet via the data center´s internet connection

to do this i am going to build a transit network for my MPLS connection.  I will do this by extending the front end network to the Access point of the MPLS switch and if i have routing enabled on the Gateway i can Access my virtual networks... great!

but if i try the same thing with NAT enabled on the Gateway, i lose connectivity.

Has anyone attempted anything similar? is it possible to have NAT and Routing on the same Gateway ?

any guidance and advice is greatly appreciated.

Thank you

I am running Windows Server 2012 R2 Essentials as a VM on Hyper-V Server 2012 R2 (server core).  In checking MSINFO32 I see "Secure Boot State" is "On" for Essentials, but given my current configuration I believe this should be "Off?"

I setup a new Hyper-V Server 2012 R2 (server core) using an Areca ARC-1224-8i RAID controller.  It was unclear to me whether or not the Areca RAID controller would support UEFI or not, but since Secure Boot was desirable I decided to try a UEFI installation. I created two volumes on the RAID controller.  C drive of 80 Gb and D drive of the remainder (about 9 Tb).  I checked the file C:\Windows\Panther\setupact.log and saw the message which told me this was an EFI installation/boot.

After Hyper-V was installed I then setup Essentials as a VM on the D drive.

When I ran MSINFO32 in both Hyper-V and Essentials and I saw the Secure Boot State was On which was expected (and desired) for both OS levels.

Several days later I started having problems.  The system seemed to have crashed and during multiple attempts to reboot the Hyper-V server couldn't seem to detect the RAID controller.  If I tried a new Hyper-V installation and loaded the RAID driver the RAID controller was seen, but when Hyper-V itself tried to boot it seemed as though the RAID driver was not being loaded and thus the RAID controller could not be found (and along with it my C boot drive was missing)?

Since I had some suspicion that the RAID controller might not support UEFI I decided to re-install Hyper-V, but this time using the Legacy BIOS.  After the installation was completed I again verified the setupact.log and saw BIOS rather than EFI (as expected).

I then re-attached my Essentials VM (which was left untouched on the D drive) and got everything running again.

But now when I check MSINFO32 within Hyper-V it showed Secure Boot State Off (expected given that UEFI was not used).  But when checking MSINFO32 within Essentials it showed Secure Boot State On.

I thought one purpose of Secure Boot was to create a chain of trust.  Given that Hyper-V can no longer verify this chain (since UEFI is not used) I would have expected any VM running above Hyper-V to be in the same state, i.e., Secure Boot State Off? When the underlying Hyper-V layer changed I would have expected that to change Essentials view of the world?  So it looks to me as though this is not being handled correctly?

Thanks for any assistance you can provide.

P.S.  In case this makes any difference I am using a motherboard with a TPM and both the C and D drives were encrypted with BitLocker.  The C drive used a TPM key and the D drive had a password and was setup to autounlock.

After I re-installed Hyper-V on the C drive I then manually entered the BitLocker password in order to access the Essentials VM on the D drive.

Theokrat

Hello,

I have built a Windows 2012R2 Hyper-V cluster on Cisco  B200M3's 2.21d firmware VIC 1240. I was unable to get the OS to enable VMQ on the NIC's that I presented to Hyper-V for VM networking. I finally found that I needed to create a  VMQ Connection policy and assign that policy to the NIC's at the hardware level that I wanted to use VMQ on. In this policy there are two settings required 1) Number of VMQ's and 2) Number of Interrupts. This is where my question comes in, how do I figure out what values to use here?

So I opened a support ticket and was given the following:

• The number of interrupts value is calculated by - the total number of CPU threads that the server has
• The number is VMQ’s is calculated by  The Number of VMQs = Number of Synthetic NICs (VM NICs) + 1) - this was clarified again later as the number of NIC's on the VM's that are present on the host. So if I have 25 vm's 1 NIC each my value should be 25.

The Interrupts makes sense however the VMQ's does not. I have a cluster and VM's are migrated back and forth between nodes for obvious reasons and we also add and remove VM's on a regular basis. I can obviously change the number of VMQ's to match when changes are made but seems very unreasonable to me.

So that all said, does anyone else have feedback on these settings?

Dear All,

Since a long time now we have a problem in our 2012 R2 cluster.
Every hour we have a freeze of the whole cluster (6 VLANS with different environments) for 8-10 minutes.
The time is every hour around the same time. The monitoring tells us there is a high i/o wait, but there is no load that does explain the i/o wait. After the 8-10 minutes the whole cluster works again. This behaviour does only happen during production time. At night when the clients are not working the behaviour is not there.

We updated all hardware and software with the latest versions. Also we increased the Queue depth and decreased  theTimeOutValue (/kb/2806730/) We had an improvement during a small period of time, after we did this maintenance.

But the problem came back. It does not matter what vlan or CSV, all the Cluster is impacted.

We are almost sure it has nothing to do with the storage or with the VM´s, but with something in between.
But for now we are running out of ideas. Anybody ?