We are in the process off moving our 2008R2 VM's from the 2008R2 HyperV servers to new Server 2012R2 Hosts.

We shut down the VM's copy the files and VHD's to the new CSV's en import the VM in the Hyperv Manager. Then we make them high available in the Failover Cluster Manager (Configure role - Virtual machine). We mount the integration tools and update the VM to version 6.3.9600.16384

For a specific type of VM (mostly RDS Host servers) we always had Dynamic Memory configured (when they were hosted on de 2008R2 platform), so we are using the same settings on the 2012r2 platform. The memory settings were;

Startup memory: 1024 MB

Minimum memory: 1024 MB

Maximum memory: 12288 MB

These VM's reboot every morning, this is done for specific reasons. But now once in a while (once per week/2 weeks) we notice that the VM's are not using more memory then 1024 MB while the demand is much higher. Rebooting the server helps most of the times, live migrating to another host also helps. In the VM we see that memory usage in the taskmanager is 99-100%, and after the move it immediately starts using more than the minimum configured amount.

Until the failover the memory usage was 1024 MB and it did not get any higher.

This happened several times. Last week we changed the Memory configuration to:

Startup memory : 2048 MB

Minimum memory: 2048 MB

Maximum memory: 12288 MB

But this morning we had a call about the performance of one of the VM's, We saw that it was only using 2 GB memory while the demand was much higher. After live migrating it to another host it started using more memory immediately.

The 2012R2 hosts are not overcommited, there is a lot of memory still available for the VM's. Those VM's never had this problem on the 2008R2 Hyperv platform.

Any idea why this happens?

Peter Camps

Scenario

I have a 3 Windows 2012 R2 Hyper-V hosts which is participating in a cluster, all of the virtual machines are hosted on CSV's. We also use Dynamic Memory for most of the servers

We do regular reboots every week for our virtual machines, but we've found that sometimes, a virtual guest will suddenly stop requesting additional memory.  At the time of writing, I have identified 10 machines - on different hosts, and even different clusters which are exhibiting this behaviour.  They're also running OS's ranging from Windows 7 to Windows 2008 R2 and Windows 2012.

I have selected one to demonstrate below.

Here, you can see the virtual machine is configured to use Dynamic Memory

and here, you can see that it's not actually demanding more than the start memory, despite the fact that I've overloaded the servers virtual memory by using MSPAINT.

Workaround

Rebooting the virtual machine does not resolve the issue, but live migrating the virtual machine from the host it is on to another host suddenly allows it to demand more memory.  One can then live-migrate it back to the original host and the problem is no longer there.

Troubleshooting

We have performed the following troubleshooting steps:

• Verified that the Integration Services are up-to-date (currently running 6.3.9600.16384)
• Verified that the virtual server has up-to-date Windows Updates
• Checked the Hyper-V-Worker\Admin event log on the current host - no errors pertaining to this VM.
• Verified that the Hyper-V host has sufficient RAM (currently only using 542 out of 768 GB)
• Checked the System event log on the virtual machine - nothing out of the ordinary to report.
• Verified that all services which start with the word "Hyper-V" on the guest machine is running.

Using the following command, I can easily identify which machines are affected (this command applies to SCVMM only):

Get-SCVirtualMachine | where {$_.DynamicMemoryEnabled -eq $true -and $_.DynamicMemoryDemandMB -eq $_.Memory} | ft Name,HostName,OperatingSystem,Memory,DynamicMemoryDemandMB,DynamicMemoryMinimumMB,DynamicMemoryMaximumMB

I do not know any diagnostic program which can give me more information regarding the memory status of a server - specifically one which can tell me more information about Memory demand, and why it's not working. 

Considering that the problem is resolved when I live migrate the affected machine, it would suggest that the issue is with the host, but as live migrating it back no longer exhibits the issue - that seems to negate that theory.  Additionally, the other 103 virtual machines which run on this host seem to not show this issue.

It's almost as if the machine is being ran with static memory, and Hyper-V doesn't realise it's dynamic, but the moment it's live migrated, it suddenly realises this and enables dynamic memory.

Any thoughts?

Dear reader,

We sometimes have a problem where our windows 2012 r2 RDS virtual servers, that reside on windows 2012r2 hyper-v hosts, loose their dynamic memory and only have their startup memory left to work with. Users start complaining that things are very slow etc.

If I check several screens (RDS Broker load balancing, hyper-v manager, cluster manager and the vm's task manager) it's clear that the vm only has its startup memory allocated. I'm not sure if this happens instantly or immidiatly after the nightly reboot. To resolve the problem we have to call all users on the vm where it happens and ask them to logoff (if they are even able to), and then we reboot the machine.

I have checked the logs from the machine where the VM resides on and the logs from the vm itself. But I cannot find anything. We also have alot of windows 2008r2 vm's with dynamivc memory, but none of those have ever had this problem.

Searched the internet, but so far it seems we are only.

Can anyone give me a lead to troubleshoot this?

Best regards,

Ruud Boersma

MCITP Enterprise administrator

Hi!

Can you help me with cmdlet which give me a file size of each snapshot in my Hyper-V!?

Hello,

I checked on the synchronization health today and it was in critical state for replication.   It hadn't synced up since the last server reboot.   I clicked on synchronize to force it and it did - no problem.   I didn't have to go to services and restart any - just clicked on replicate in hyper-v manager.  I don't want to have to check on the replication and manually replicate after every reboot.   Is there a batch file I can run to force replication like I just did manually?

The error I got after the reboot until I manually forced replication was - Hyper-V failed to enable replication for virtual machine Operation aborted (0x80004004).    I didn't need to delete replication or anything to make replication work - I just had to basically resume it.   I am not using certificates to replicate so it isn't a bad cert.

I have 2 windows 2012 servers (WIn2012 Standard File Server / Shared Folder  and Win2012 Standard + Hyper-V)

The shared folder have users, admins, system, everyone full control permissions for shared + NTFS permissions (i added also the HYPER-V$ computer account)

I´ve tried PROCMON to see the error in detail, filtered out useless things and aded keyword VHD to ctach the write attempt.. nothing, no itens captured...

But when i try to create the .VHDX file, i got the error message

"Failed To Create Virtual Hard Disk" and "General Access Denied Error 0x80070005 creating .VHDX " error

I´m trying to create using the new disk wizard and typing \\server\sharedfolder as destination for the VHDX file

Any ideas?

Curious what everyone's best practices are when it comes to installing software within a VM with Hyper-V.. in the past i've broken the guest into at least two vhd's.. one for C (os) and the other for D (for server installs, like exchange, etc)..

All my vhds and vhdx's are on a raid10 array (or they will be as i'm creating our 4th hyper-v host).. as an aside i'm moving away from raid5/6 and heading off to do sas3 2TB 7200 rpm drives on a raid10 array (8 drives total, for 8TB usable)..

Also thinking its worthwhile to break the raid array into separate data volumes rather than one big one.. as i could have some for replication from other hosts or maybe divide the load in case a volume (not the array) fails.

So moving forward into the future with new guest server builds.. and vhdx's.. i'm wondering if there is really any value in doing this at this point, breaking them into two vhdx's rather than one, aside from maybe logistics and file separation?

Thanks in advance

Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

I used to have a virtual switch that was bound to my wireless adapter. It was at one point removed, but now I want to re-create it.

But, now Hyper-V throws this error any time I try to bind a virtual switch to my wireless adapter:

Error applying Virtual Switch Properties changes

Failed while adding virtual Ethernet switch connections.

Ethernet port '{Guid}' bind failed: The system cannot find the file specified. (0x80070002).

I've tried uninstalling/re-installing my network adapter. My efforts have had no effect.

I'm a little confused as to how to set this up and need a little guidance.

What i'm trying to do is create a lab environment on my hyper-v host that consists of 3 subnets: 192.168.1.0, 192.168.2.0 and 192.168.3.0. I created a server 2012 VM with RRAS and attached 3 NICs to it with the following:

NIC1: IP = 192.168.1.254, SM = 255.255.255.0, No Gateway or DNS servers.

NIC 2: 192.168.2.254, SM = 255.255.255.0, No Gateway or DNS servers.

NIC 3: 192.168.3.254, SM = 255.255.255.0, No Gateway or DNS servers.

So far so good, I create 2 additional VMs on the 192.168.1.0 network, one is a DC/DNS/DHCP and the other is an SCCM server. However, I need to also have internet connection for these lab VMs. My hyper-v host has 2 NICs with access to an internet connection. How do I go about this considering that I want to keep this lab isolated using those subnets but at the same time having internet connection?

Thanks,

Hi I'm not very familiar with Hyper-V but after setting up a Hyper-V server and then removing the Hyper-V Role from my Windows 2012 R2 server, it seems like one Network adapter has stopped working. I have a good switchport and cable (verified) and when I plug into this port, I see the network adapter in Control panel showing as cable is unplugged.  I then moved to another Windows 2012 server and installed Hyper-V role and setup a virtual server, then removed the server and the role and ended up with the same problem on the second server. it seems like Hyper-V's virtual switch is still holding on to this NIC port. Anyone knows how to free up this port?

Thank you

Can VMs for linux and windows coexist on the same hyper-v host on windows 2012 R2?

Noted the following recommendation for linus VMs,...

"For linux VM’s --Hardware-enforced Data Execution Prevention  (DEP) must be available and enabled. Specifically, you must enable Intel      XD bit (execute disable bit). Need  to check if this will effect the windows VM’s on the same hyper-v server. Additional investigation will need to be done regarding linux VMs." --- Is this change made in the BIOS of the hyper-v host and will this configuration impact windows VMs running on the same host???

http://blogs.technet.com/b/virtualization/archive/2013/07/24/enabling-linux-support-on-windows-server-2012-r2-hyper-v.aspx

Is there are best practice for setting up linus VMs?

dsk

Hello Experts,

I am planning a hyper V deployment in which I will be having 2 Virtual Machines of Server 2008 R2 acting as VPN  servers

hosted on a physical machine running Windows Server 2012 R2 with Hyper V Role installed. Now I want to know what will 

be the configuration for the Hyper V Switch as 2 different public sub-nets for two VMs are routed on the IP of NIC connected 

with physical Machine . The IPs from the two public subnets will be used in the IP Pools of the RRAS configured on the VMs.

Do I need to configure virtual router or something similar

Please suggest some configurations.

Thanks

TechSpec90

Hello,

l have a 2 node Win 2012 R2 Hyper-V RDS Cluster hosting Pooled Virtual Desktops.  The Cluster Shared Volume is presented directly from the EMC Fibre SAN to the Hyper-V hosts.   I want to enable Deduplication on the CSV.   All of the documentation suggests not doing this directly on the Hyper-V hosts, but creating a SOFS Cluster that presents the deduped disk to the Hyper-V hosts.  This will add a level of complexity to the environment that I would like to avoid. Is the only reason for this possible performance issues?  Can I enable dedupe directly on the Hyper-V hosts and the attached CSV volume using the powershell command Enable-DedupVolume C:\ClusterStorage\Volume1 –UsageType HyperV?  What are the ramifications?

Thank you.

Hi guys 

My Virtual Machine has stopped at 6% When i make Updates ...I do it Restart ..It's the same Action .

I can't login in my Virtual , Please tell me how we can solve this a big problem because this virtual machine is my DC .

Thank you . 

When I try to install hyper-v on windows 10 Pro N (vanilla installation) 64bit it fails. Here is what I've found in CSB.log

015-08-02 13:38:04, Info                  CSI    000000b9@2015/8/2:12:38:04.010 CSI Advanced installer perf trace:
CSIPERF:AIDONE;{a111f280-5923-47c0-9a68-d0bafb577901};(null);15957us
2015-08-02 13:38:04, Info                  CSI    000000ba End executing advanced installer (sequence 0)
    Completion status: HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED)

2015-08-02 13:38:04, Info                  CSI    000000bb Performing 1 operations as follows:
  (0)  LockComponentPath: flags: 0 comp: {l:16 b:25894b1320cdd0014600000044066806} pathid: {l:16 b:25894b1320cdd0014700000044066806} path: [l:238{119}]"\SystemRoot\WinSxS\x86_microsoft.windows.s..ation.badcomponents_31bf3856ad364e35_10.0.10240.16384_none_e4739596a56e9b02" pid: 644 starttime: 130829926806303174 (0x01d0cd201147b1c6)
2015-08-02 13:38:04, Error      [0x01805b] CSI    000000bc (F) Failed execution of queue item Installer: Network Drivers ({a111f280-5923-47c0-9a68-d0bafb577901}) with HRESULT HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED).  Failure will not be ignored: A rollback will be initiated after all the operations in the installer queue are completed; installer is reliable[gle=0x80004005]
2015-08-02 13:38:04, Info                  CBS    Added C:\Windows\Logs\CBS\CBS.log to WER report.
2015-08-02 13:38:04, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20150802023007.log to WER report.
2015-08-02 13:38:04, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20150731163818.log to WER report.
2015-08-02 13:38:04, Info                  CBS    Could not get active session for current session file logging [HRESULT = 0x80004003 - E_POINTER]
2015-08-02 13:38:04, Info                  CBS    Not able to add pending.xml.bad to Windows Error Report. [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2015-08-02 13:38:04, Info                  CSI    000000bd Creating NT transaction (seq 2), objectname [6]"(null)"
2015-08-02 13:38:04, Info                  CSI    000000be Created NT transaction (seq 2) result 0x00000000, handle @0x398
2015-08-02 13:38:04, Info                  CSI    000000bf@2015/8/2:12:38:04.667 Beginning NT transaction commit...
2015-08-02 13:38:04, Info                  CSI    000000c0@2015/8/2:12:38:04.682 CSI perf trace:
CSIPERF:TXCOMMIT;13857
2015-08-02 13:38:04, Info                  CSI    000000c1 Begin executing advanced installer phase 32 (0x00000020) index 149 (0x0000000000000095) (sequence 182)
    Old component: [l:0]""
    New component: [ml:318{159},l:316{158}]"Microsoft-Hyper-V-VStack.Resources, Culture=en-GB, Version=10.0.10240.16384, PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=amd64, versionScope=NonSxS"
    Install mode: install
    Smart installer: FALSE
    Installer ID: {9f4ec79f-3a97-4772-b635-2899468900a2}
    Installer name: [3]"Mof"
2015-08-02 13:38:04, Info                  CSI    000000c2 Performing 1 operations as follows:
  (0)  LockComponentPath: flags: 0 comp: {l:16 b:c10eb21320cdd0014900000044066806} pathid: {l:16 b:c10eb21320cdd0014a00000044066806} path: [l:226{113}]"\SystemRoot\WinSxS\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.10240.16384_none_115fd2f761f7c508" pid: 644 starttime: 130829926806303174 (0x01d0cd201147b1c6)
2015-08-02 13:38:04, Info                  CSI    000000c3 Performing 1 operations as follows:
  (0)  LockComponentPath: flags: 0 comp: {l:16 b:c10eb21320cdd0014b00000044066806} pathid: {l:16 b:c10eb21320cdd0014c00000044066806} path: [l:232{116}]"\SystemRoot\WinSxS\amd64_microsoft-hyper-v-vstack.resources_31bf3856ad364e35_10.0.10240.16384_en-gb_58167de223237788" pid: 644 starttime: 130829926806303174 (0x01d0cd201147b1c6)
2015-08-02 13:38:04, Info                  CBS    Progress: UI message updated. Operation type: Foundation. Stage: 1 out of 1. Percent progress: 68.
2015-08-02 13:38:05, Info                  CSI    000000c4@2015/8/2:12:38:05.229 CSI Advanced installer perf trace:
CSIPERF:AIDONE;{9f4ec79f-3a97-4772-b635-2899468900a2};Microsoft-Hyper-V-VStack.Resources, Version = 10.0.10240.16384, pA = amd64, Culture = [l:10{5}]"en-GB", nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35};571645us
2015-08-02 13:38:05, Info                  CSI    000000c5 End executing advanced installer (sequence 182)
    Completion status: S_OK 

Hi,

We are building a new Hyper-V infratructure, based on Windows Server 2012 Datacanter and multiple HP ML350p Gen8 servers. We've been deploying lost of Server 2012 Hyper-V projects lately (all HP G6 servers), without any problems at all, but this project is a real pain:

We are unable to install the Hyper-V role on any server, at all! There's four of them! All hosts are HP ML350p Gen8, Server 2012 Datacenter, latest updates/firmware/drivers (HP SPP 2012.10.0). BIOS settings are correct/verified for virtualization.
We simply install Hyper-V via Server Manager without any modifications (not selecting any network adapters either, this is all done later using Virtual Network ).

The installation reboots the server, and during boot, the installation fails. After reboot, the Server Manager sais there's been an unexpected error, and have a nice day.

I've been digging through the CBS.log file, and there a very small ERROR portion during installation:

..

2012-11-22 23:13:14, Info                  CSI    0000000c Begin executing advanced installer phase 32 (0x00000020) index 65 (0x0000000000000041) (sequence 98)
    Old component: [l:0]""
    New component: [ml:298{149},l:296{148}]"Microsoft-Hyper-V-VStack, Culture=neutral, Version=6.2.9200.16384, PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=amd64, versionScope=NonSxS"
    Install mode: install
    Installer ID: {9f4ec79f-3a97-4772-b635-2899468900a2}
    Installer name: [3]"Mof"
2012-11-22 23:13:14, Info                  CSI    0000000d Performing 1 operations; 1 are not lock/unlock and follow:
  (0)  LockComponentPath (10): flags: 0 comp: {l:16 b:6cc85491fec8cd01090000009001a401} pathid: {l:16 b:6cc85491fec8cd010a0000009001a401} path: [l:206{103}]"\SystemRoot\WinSxS\amd64_microsoft-hyper-v-vstack_31bf3856ad364e35_6.2.9200.16384_none_bd871a667de19e11" pid: 190 starttime: 129980959854649778 (0x01cdc8fe8bb361b2)
2012-11-22 23:13:15, Info                  CBS    Progress: UI message updated. Operation type: Foundation. Stage: 1 out of 1. Percent progress: 38.
2012-11-22 23:13:17, Error                CSI    00000001@2012/11/22:22:13:17.733 (F) Logged @2012/11/22:22:13:15.318 : [ml:140{70},l:138{69}]"MOF (install online) $(runtime.System32)\WindowsVirtualization.V2.mof"
[gle=0x80004005]
2012-11-22 23:13:17, Error                CSI    00000002@2012/11/22:22:13:17.733 (F) CMIADAPTER: Inner Error Message from AI HRESULT = 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)]
 [
[150]"An error occurred while creating object 18 defined on lines 35 - 37:

0X80041002 Class, instance, or property 'CIM_RegisteredProfile' was not found.

"
]
[gle=0x80004005]
2012-11-22 23:13:17, Error                CSI    00000003@2012/11/22:22:13:17.733 (F) CMIADAPTER: AI failed. HRESULT = 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)]
Element:
[104]"<mof xmlns="urn:schemas-microsoft-com:asm.v3" name="$(runtime.System32)\WindowsVirtualization.V2.mof" />"
[gle=0x80004005]
2012-11-22 23:13:17, Error                CSI    00000004@2012/11/22:22:13:17.733 (F) CMIADAPTER: Exiting with HRESULT code = 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)].
[gle=0x80004005]
2012-11-22 23:13:17, Info                  CSI    0000000e Performing 1 operations; 1 are not lock/unlock and follow:
  (0)  LockComponentPath (10): flags: 0 comp: {l:16 b:7a570393fec8cd010d0000009001a401} pathid: {l:16 b:7a570393fec8cd010e0000009001a401} path: [l:234{117}]"\SystemRoot\WinSxS\x86_microsoft.windows.s..ation.badcomponents_31bf3856ad364e35_6.2.9200.16384_none_353ccb4c94858655" pid: 190 starttime: 129980959854649778 (0x01cdc8fe8bb361b2)
2012-11-22 23:13:17, Error      [0x018020] CSI    0000000f (F) Failed execution of queue item Installer: Mof ({9f4ec79f-3a97-4772-b635-2899468900a2}) with HRESULT 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)]. Failure will not be ignored: A rollback will be initiated after all the operations in the installer queue are completed; installer is reliable (2)[gle=0x80004005]
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CBS.log to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121122020104.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121121151252.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121121150112.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121108153942.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121108130606.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Could not get active session for current session file logging [HRESULT = 0x80004003 - E_POINTER]
2012-11-22 23:13:17, Info                  CBS    Not able to add pending.xml.bad to Windows Error Report. [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2012-11-22 23:13:17, Info                  CSI    00000010 Creating NT transaction (seq 1), objectname [6]"(null)"
2012-11-22 23:13:17, Info                  CSI    00000011 Created NT transaction (seq 1) result 0x00000000, handle @0x404
2012-11-22 23:13:17, Info                  CSI    00000012@2012/11/22:22:13:17.920 Beginning NT transaction commit...
2012-11-22 23:13:17, Info                  CSI    00000013@2012/11/22:22:13:17.920 CSI perf trace:
CSIPERF:TXCOMMIT;12997
2012-11-22 23:13:17, Info                  CSI    00000014@2012/11/22:22:13:17.920 CSI Advanced installer perf trace:
CSIPERF:AIDONE;{9f4ec79f-3a97-4772-b635-2899468900a2};Microsoft-Hyper-V-VStack, Version = 6.2.9200.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral;3529599us
2012-11-22 23:13:17, Info                  CSI    00000015 End executing advanced installer (sequence 98)
    Completion status: HRESULT_FROM_WIN32(ERROR_ADVANCED_INSTALLER_FAILED) 

..

It's hard to find any information on this subject. The CBS log contains 4 MB of information, but only this portion contains Errors. I really hope somebody can help us out, because all we need is Hyper-V... and it refuses to install on any machine.

'GuestOperatingSystem' property from Msvm_SummaryInformation class gives NULL for most of my virtual machines.

(I have virtual machines combination of SUSE Linux and Windows. I have integration services running on all of them.)

But few VirtualMachine's are getting the value. Strange situation. :(

Hello Experts

I have a physical server with Windows Server 2012 R2 Datacenter installed. Now if I install Server 2012 R2 based guest VMs do I have to buy and activate license for them individually or the VMs will be automatically licensed free with AVMA I have an SPLA license with me. Also what will be the case If I make Server 2008 R2 based VMs.

Thanks