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Hyper-V Server 2012 R2 iSCSI Severe Latency Issues

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I am converting a small office from a physical server infrastructure to a virtual infrastructure using Hyper-V and iSCSI storage. I am using Hyper-V Server 2012 R2 (no GUI) on a Dell PE R430 with a 5-bay Synology. Using 2 x 1Gbps NICs for iSCSI with MPIO. I appear to have good iSCSI sessions established, a VM that is running on the LUN that can transfer files quickly from the host OS drives to the VMDK on the LUN, BUT my issues is the disk latency on the VM is horrendous. Within the VM the disk time is always at 100% and the response time is on average 600ms to 3000ms. I feel lost without my GUI right now, but any help would be greatly appreciated.

 

Host: Dell PowerEdge R430 (1 x Xeon 6-core CPU, 32GB RAM, 6 x 1Gbps NICS, and RAID1 with 2 x 120GB Intel SSDs)

Storage: Synology DS1515+ with SHR (5 x 2TB WD Red) and 2 NICs for LAN and 2 NICs for iSCSI

 

To get them started I setup a new Dell PowerEdge R430 and installed Microsoft Hyper-V Server 2012 R2.Typically I have installed Microsoft Windows Server 2012 R2 with Hyper-V installed so I can have the GUI as needed. However, this time I thought I would go with the free core version to save on software costs and I didn't have any trouble configuring this in labs from time to time. I have a Synology DS1515+ with a 5-drive SHR and a 7TB LUN for VM files and a 1GB LUN for a Witness disk as I plan to make this into a Failover Cluster with a  CSV.

 

On the host I used the  New-NetLbfoTeam cmdlet to setup a 2 NIC Team for Mgmt LAN, a 2 NIC Team for Hyper-V LAN vSwitch, a 2 separate NICs for iSCSI traffic. I use netsh commands and Get-NetAdapter cmdlets to set the IP addresses and made sure there were not any MAC address conflicts.

 

I used Keith Mayer's guide (http://blogs.technet.com/b/keithmayer/archive/2013/03/12/speaking-iscsi-with-windows-server-2012-and-hyper-v.aspx) to setup the iSCSI connection and sessions to my iSCSI Target on my Synology. I also setup MPIO. I created a new VM running Windows 8.1 for management.

 

I noticed that the VM wasn't performing well. I found the disk time was nearly always at 100% and the Disk response times were extremely bad ranging from 60ms to 50000ms. I would say the consistent good was around 600ms and the spikes were on average in the 3000ms range. Absolutely awful. I have more background in VMware and so I don't know really where to begin. It can transfer large files from the host local disk to the VM disk around 80 MB/s, but the experience shows the latency.

 

Two more examples. If I start the VM and open Task Manager and go to the Performance tab and select Disk it will show the response time (Also look in Resource Manager) and it will look okay <20ms, but open Chrome or Resource Monitor and spikes to >3000ms. Also, the System and Explorer processes show an average of 300-500ms response time at essentially idle. I think you get the idea.

 

I have installed the latest DSM on the Synology and I have installed missing updates to the OS on the host. I tried removing the iSCSI target connections and adding them back on the host, but that didn't help either. Restarted the host, storage, and VM multiple times in the process of troubleshooting. About to phone Microsoft.

 

Including some random outputs from PowerShell on the iSCSI and network stuff.

PS Info:
PS C:\Users\ben> get-iscsiconnection


ConnectionIdentifier : ffffe00167f5a020-0
InitiatorAddress     : 0.0.0.0
InitiatorPortNumber  : 1984
TargetAddress        : 10.1.1.51
TargetPortNumber     : 3260
PSComputerName       :



PS C:\Users\ben> Get-IscsiSession


AuthenticationType      : NONE
InitiatorInstanceName   : ROOT\ISCSIPRT\0000_0
InitiatorNodeAddress    : iqn.1991-05.com.microsoft:client-hv01
InitiatorPortalAddress  : 0.0.0.0
InitiatorSideIdentifier : 400001370000
IsConnected             : True
IsDataDigest            : False
IsDiscovered            : False
IsHeaderDigest          : False
IsPersistent            : True
NumberOfConnections     : 1
SessionIdentifier       : ffffe00167f5a020-4000013700000001
TargetNodeAddress       : iqn.2000-01.com.synology:client-ds01.target-1.644bfbc96d
TargetSideIdentifier    : 0200
PSComputerName          :



PS C:\Users\ben> Get-IscsiTargetPortal


InitiatorInstanceName  : ROOT\ISCSIPRT\0000_0
InitiatorPortalAddress : 10.1.1.11
IsDataDigest           : False
IsHeaderDigest         : False
TargetPortalAddress    : 10.1.1.51
TargetPortalPortNumber : 3260
PSComputerName         :

InitiatorInstanceName  : ROOT\ISCSIPRT\0000_0
InitiatorPortalAddress : 10.1.1.12
IsDataDigest           : False
IsHeaderDigest         : False
TargetPortalAddress    : 10.1.1.51
TargetPortalPortNumber : 3260
PSComputerName         :



PS C:\Users\ben> Get-Disk | Where-Object BusType -eq "iSCSI"

Number Friendly Name                            OperationalStatus                                                Total Size Partition Style
------ -------------                            -----------------                                                ---------- ---------------
1      SYNOLOGY iSCSI Storage                   Online                                                                 4 TB GPT
2      SYNOLOGY iSCSI Storage                   Online                                                                 1 GB GPT


PS C:\Users\ben> get-partition


   Disk Number: 0

PartitionNumber  DriveLetter Offset                                                              Size Type
---------------  ----------- ------                                                              ---- ----
1                            1048576                                                          350 MB IFS
2                C           368050176                                                     110.91 GB IFS


   Disk Number: 1

PartitionNumber  DriveLetter Offset                                                              Size Type
---------------  ----------- ------                                                              ---- ----
1                            17408                                                            128 MB Reserved
2                E           135266304                                                          4 TB Basic


   Disk Number: 2

PartitionNumber  DriveLetter Offset                                                              Size Type
---------------  ----------- ------                                                              ---- ----
1                            17408                                                             32 MB Reserved
2                F           33619968                                                      991.88 MB Basic


PS C:\Users\ben> ping 10.1.1.51

Pinging 10.1.1.51 with 32 bytes of data:
Reply from 10.1.1.51: bytes=32 time=1ms TTL=64
Reply from 10.1.1.51: bytes=32 time<1ms TTL=64
Reply from 10.1.1.51: bytes=32 time<1ms TTL=64
Reply from 10.1.1.51: bytes=32 time<1ms TTL=64

Ping statistics for 10.1.1.51:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 1ms, Average = 0ms
PS C:\Users\ben>

PS C:\Users\ben> get-netadapter

Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
----                      --------------------                    ------- ------       ----------             ---------
StorageNIC4               Broadcom NetXtreme Gigabit Ethernet #4       17 Up           44-A8-42-39-3C-B1         1 Gbps
StorageNIC3               Broadcom NetXtreme Gigabit Ethernet #3       16 Up           44-A8-42-39-3C-B0         1 Gbps
Ethernet 3                Realtek PCIe GBE Family Controller #2        18 Up           00-13-3B-10-49-87         1 Gbps
NIC2                      Broadcom NetXtreme Gigabit Ethernet #2       15 Up           44-A8-42-39-3C-AF         1 Gbps
NIC1                      Broadcom NetXtreme Gigabit Ethernet          13 Up           44-A8-42-39-3C-AE         1 Gbps
vEthernet (Mgmt LAN)      Hyper-V Virtual Ethernet Adapter #4          31 Up           44-A8-42-39-3C-04        10 Gbps
vEthernet (Hyper-V LAN)   Hyper-V Virtual Ethernet Adapter #2          29 Up           00-13-3B-10-49-02        10 Gbps
LAN                       Microsoft Network Adapter Multiple...#2      25 Up           44-A8-42-39-3C-02         2 Gbps
Hyper-V                   Microsoft Network Adapter Multiple...#3      27 Up           00-13-3B-10-49-03         2 Gbps
Ethernet 2                Realtek PCIe GBE Family Controller           14 Up           00-13-3B-10-49-88         1 Gbps


PS C:\Users\ben> netsh interface show interface

Admin State    State          Type             Interface Name
-------------------------------------------------------------------------
Enabled        Connected      Dedicated        Ethernet 2
Enabled        Connected      Dedicated        Hyper-V
Enabled        Connected      Dedicated        LAN
Enabled        Connected      Dedicated        vEthernet (Hyper-V LAN)
Enabled        Connected      Dedicated        vEthernet (Mgmt LAN)
Enabled        Connected      Dedicated        NIC1
Enabled        Connected      Dedicated        NIC2
Enabled        Connected      Dedicated        Ethernet 3
Enabled        Connected      Dedicated        StorageNIC3
Enabled        Connected      Dedicated        StorageNIC4

PS C:\Users\ben>


0x3B BSOD on vmwp.exe/vhdmp.sys

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Hey guys,

Just seeing if anyone has run into this issue or has any ideas on troubleshooting this as my Bing-foo seems to not be working with me.

So earlier this evening i went to add a virtual CD-Rom drive and ISO to an active VM within my Hyper-visor cluster (using SCVMM 2012 R2) and the entire host node that was supporting that VM decided it was going to nope right out of that and just BSOD'ed with error 0x3B within a few seconds after the task started. Now the host eventually came back up and the VM's that were on that node successfully recovered on another node in the cluster, and the VM that I was trying to reconfigure appears to have kept its new configuration and is functioning normally (seems strange to me to be honest). 

The bug check for the Hypervisor is below but i am not able to discern any clear reason for the issue. Drivers have been updated within the last 3ish months, updates are current, and i have been able to perform this feat (adding a virtual CD-rom drive with ISO) on a VM in this cluster before without this happening. Error log is clean up until after the reboot.

SYSTEM_SERVICE_EXCEPTION (3b)

An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff80196a0efae, Address of the instruction which caused the bugcheck
Arg3: ffffd00020617990, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.

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

TRIAGER: Could not open triage file : e:\dump_analysis\program\triage\modclass.ini, error 2

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

FAULTING_IP:
vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+26
fffff801`96a0efae 4883bb8802000000 cmp     qword ptr [rbx+288h],0

CONTEXT:  ffffd00020617990 -- (.cxr 0xffffd00020617990)
rax=0000000000000000 rbx=ffffffffffffffff rcx=fffff80196a4fd80
rdx=0000000000000000 rsi=ffffe00181a6ee00 rdi=0000000000000000
rip=fffff80196a0efae rsp=ffffd000206183c0 rbp=0000000000000001
 r8=0000000000000001  r9=0000000000000000 r10=fffff80196a4fef0
r11=ffffd000206183c0 r12=ffffe00185bf7500 r13=ffffe0018974be01
r14=0000000000000000 r15=0000000000000000
iopl=0         nv up ei ng nz na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00010286
vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+0x26:
fffff801`96a0efae 4883bb8802000000 cmp     qword ptr [rbx+288h],0 ds:002b:00000000`00000287=????????????????
Resetting default scope

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT_SERVER

BUGCHECK_STR:  0x3B

PROCESS_NAME:  vmwp.exe

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from fffff80196a77fb2 to fffff80196a0efae

STACK_TEXT: 
ffffd000`206183c0 fffff801`96a77fb2 : fffff801`96a4fd80 00000000`00000000 ffffe001`81a6ee00 ffffe001`81a6ee00 : vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+0x26
ffffd000`206183f0 fffff801`96a19a2b : fffff801`96a4fd80 fffff801`96a4fd01 ffffd000`20618498 ffffe001`85bf7440 : vhdmp!VhdmpiActivateProposedBackingStoreChain+0xfe
ffffd000`20618460 fffff801`96a195e6 : 00000000`00000000 00000000`00000000 ffffe001`85bf7440 ffffe001`85bf7518 : vhdmp!VhdmpiIsoModifyBackingStore+0xa3
ffffd000`20618490 fffff801`96a6bc0c : 00000000`00000000 ffffd000`20618540 fffff801`96a4d7a0 ffffc001`00000000 : vhdmp!VhdmpiIsoEjectMediaThread+0x102
ffffd000`206184d0 fffff801`96a2d656 : 00000000`00000001 ffffe001`8974bfb0 ffffe001`8974bee0 00000000`000009b8 : vhdmp!VhdmpiStartAsyncOp+0x268
ffffd000`20618580 fffff801`96a0333b : ffffe001`8974bee0 ffffe001`7e1ba8c0 00000000`00000000 fffff800`5c504493 : vhdmp!VhdmpiIsoControlObjectDeviceControlHandler+0x1ca
ffffd000`206185b0 fffff801`96a031e6 : ffffe001`8974bee0 ffffe001`7f1bf100 00000000`002d1901 ffffffff`00000000 : vhdmp!VhdmpiControlObjectIrpHandler+0x117
ffffd000`206185e0 fffff801`9716b55b : ffffe001`8974bee0 00000000`002d19e0 00000000`00000000 00000000`00000000 : vhdmp!VhdmpFirstLevelIrpHandler+0x6e
ffffd000`20618630 ffffe001`8974bee0 : 00000000`002d19e0 00000000`00000000 00000000`00000000 00000000`00000000 : vhdparser+0x155b
ffffd000`20618638 00000000`002d19e0 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0xffffe001`8974bee0
ffffd000`20618640 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 ffffc001`b7550f00 : 0x2d19e0

FOLLOWUP_IP:
vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+26
fffff801`96a0efae 4883bb8802000000 cmp     qword ptr [rbx+288h],0

SYMBOL_STACK_INDEX:  0

SYMBOL_NAME:  vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+26

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: vhdmp

IMAGE_NAME:  vhdmp.sys

DEBUG_FLR_IMAGE_TIMESTAMP:  54504a1d

STACK_COMMAND:  .cxr 0xffffd00020617990 ; kb

FAILURE_BUCKET_ID:  X64_0x3B_vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+26

BUCKET_ID:  X64_0x3B_vhdmp!VhdmpiInitializeBackingStoreChainForBalancer+26

Followup: MachineOwner

Stumped! this one's out there.

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Ok so we have a DELL power edge T320 running windows server 2012 R2 Hyper V with 3 virtual servers DC, File server, and a windows 7 machine. We are having a problem where whenever something is plugged into the same power source (outlet or ups) the DC and the File server CPU spike to 98-99% and local network is sluggish at best probably because the DC is running so high until the hyper V is rebooted. Obvious solution is to NOT plug anything else in but I'm trying to figure out WHY.....

Thanks for any help or knowledge

Loss of a single LACP link results in LACP group traffic failing

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Hi


Can anyone explain this one?

I have the following setup:

- Switches:

    3 x Cisco 3750X-24TS and 1 x 3750G-24TS-1U in a stack
    s/w: 15.0(2)SE on all
    Etherchannel groups created as LACP/Active with 4 to 6 links per group


- Servers #1

    4 x Dell servers with Broadcom NICs in a Hyper-V 2012 r2 cluster
    NIC teaming configured using MS Hyper-V Load Balancing (i.e. not using the Broadcom utility to aggregate the NICs).
    There are 6 NICs per LACP group on each server connected to the 3750(x) switch stack.
    The NICs are connected across all 4 members of the stack. LAG created as LACP/Active

- Servers #2

    2 x Dell servers with Intel NICs running Windows 2012 r2 in a cluster (used as a HA file cluster).
    NIC teaming created using Win2012 load balancing. LAG created as LACP/Active
    There are 4 NICs per LACP group on each server connected to the 3750(x) switch stack
    The NICs are connected across all 4 members of the stack. LAG created as LACP/Active


Issue:

On Thursday a helpful telecoms engineer knocked out power to switch #2 of the 3750(x) core switch stack and caused a reboot of that switch. When this happened it appears that, rather than just losing connectivity on the LACP links connected to that single switch, the entire LACP interface went down causing both the Hyper-V cluster and the HA file cluster to start throwing roles around and denying the existence of the other nodes. Chaos ensued.

Once switch #2 had rebooted it joined the stack correctly and normal service, in terms of the network connectivity resumed. The file cluster started operating without assistance but all of the VMs had rebooted and were in various states of chaos.

So the question is what could have happened to the LACP LAG interface on the switches or the Loadbalancing on HyperV to cause the entire group to fail when one / two links went down?

Thanks in advance - any help very greatfully received!
 
Martin

UEPALS MS Forum data

Best method for sharing files on dev enviroment

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I have created a dev environment that must replicate some of our VMs on our live network, meaning same hostnames and IP addresses of the VMs will be the same on both environments.

My two methods of sharing files between the two environments is by using .ISO files, or to change a VM from live network to dev network. Both methods work okay but can be a little annoying. Creating ISO files takes time. Moving a VM from two different networks often has Domain Controller related issues. Is there a better way to achieve this? I can not have a VM connected to both networks because the dev and prod networks use the same subnet.

Does Hyper-V support VHD sharing on two different networks? So two VMs on two different networks using the same vhd(x).

We are using Hyper-V 2012R2 and Windows Server 2012 R2 VMs.

On failover, when DC-nic is disconnected: No authority could be contacted for authentication (0x80090311)

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Hi All,

Failover in my Hyper-V cluster doesn't work when a specific NIC (office), on which DC is active, is disconnected.

My cluster:

  •  3 nodes, running Hyper-V 2012r2 Core. (Dell R630)
  •  Direct Attached Shared Storage to all 3 nodes through MPIO (Dell MD3200)
  •  5 networks:
  1. Office network (this is a 192.168.20.x via this network, the nodes are added to the domain controller)
  2. Factory 1 network  (this is a 192.168.0.x network, no DC, no gateway, no DNS. Factory PLC's use this network)
  3. Factory 2 network  (this is a 192.168.1.x network, again, no DC, no gateway, no DNS, also used for PLC's)
  4. Migration network  (this is a 10.0.0.x network, dedicated switch, no DC, no gateway, no DNS only used for migration.)
  5. Cluster Heartbeat network ( this is a 172.16.0.x network, dedicated switch, no DC, no gateway, no DNS, used for cluster)

 Cluster is up and running validated. Now when testing failover a couple of scenario's work allright like:

  • Killing power to one of the nodes, the cluster senses this and restarts the VM's on a different node.
  • Remove all network connections from one node, VM is restarted on a different node.
  • A couple of VM's use 2 networks: Factory 2 network and Office network, when Factory 2 network is disconnected,the cluster senses this and the VM's are 'Live Migrated' to a different node which still has both network connections alive.

So far so good, but if I:

  • Disconnect the Office network on a node which hosts the VM's that use 2 networks (Factory 2 and Office)

I can see that the cluster has sensed this and wants to live migrate the VM's to a different host.
After a few seconds the VM's have status 'Migration Queued', instead of directly migrating.
After a while, there's an error that the VM's are not migrated and are still running on the original node which don't have all network connections anymore.

A lot of digging throught logs I find this: No authority could be contacted for authentication 0x80090311
So, I understand this because that node doesn't have a connection to the office network, on which the DC resides, anymore, so it can not author the kerberos constrained delegation anymore.

But what I don't get is how to resolve this issue.
How can I have all the nodes in the cluster trust eachother and accept live migration even when the DC can not be reached at all.

Looking forward to your responses!

BR,

Mark

I/O throughput on VM System Disk

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Hi all,

I've got a Generation 2 VM running Windows 2012R2 though SCVMM/Hyper-V 2012R2 (update roll-up 6).

The VM has two disks (C: and D: drive) on separate SCSI controllers, but with both VHDX's in the same folder on the same SMB3 share.

When I run DiskSPD on the C: drive, I get around 10K IOPS and 100MB/s throughput, when I run the same test on the D: drive I get 100K IOPS and 6Gbps throughput. Nothing else is using the SMB3 share to affect the results, and the tests have been run many times with the same result..

Any suggestions as to why that might be?

Many Thanks,

David

Configuring Vlan's which are Controlled Via virtual firewall

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Hi all,

I am currently having a problem with Hyper-V.

We have a virtual firewall which is hosted via hyper-v. This also is doing the DHCP for the local network & a Vlan.

The firewall is configured correctly and machines will pick up DHCP for the LAN but the Vlan tags just arent working. 

After a bit of testing ive come to the conclusion that something is stripping the tags before the machine gets to speak with the virtual firewall. I also had a look and someone mentioned trunking? enabling this on the firewall VM solve the problem? Anymore info just let me know. thanks in advance!


Unable to delete virtual switch

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When I am trying to delete the Virtual switch created on Hyper V 2012 R2 core installation, I getting following issue.

Switch delete failed, switch = '7DD74D33-1A42-4F6E-8E35-FD22169D4BCD': The device does not recognize the command. (0x80070016).

Any idea ?

I am using powershell cmd to remove switch. tried nvspbind.exe but no help.

Configuring SR-IOV Hyper-V host. The VMs are not connecting to the network VM NIC shows (unidentified network)

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Hi, 

I am trying to configure SR-IOV on a Hyper-V server. As far as I know everything is configured correctly from the hardware and OS side. This is a Dell server 720 with Intel card. 

Could someone please help me out.

This is what I have done so far:

I have followed the vendors documentation in order to configure it. 

http://www.intel.com/content/dam/www/public/us/en/documents/technology-briefs/ethernet-sr-iov-microsoft-windows-brief.pdf

I have used this blog to confirm the functionality:

http://blogs.technet.com/b/jhoward/archive/2012/03/21/everything-you-wanted-to-know-about-sr-iov-in-hyper-v-part-8.aspx

Cisco switch where the physical NIC assigned to the VSwitch is connected to a port that's configured with an specific VLAN (no trunk)

Everything I've checked indicates that SR-IOV is configured correctly form the and hardware/OS side. Including the VSwitch, the VM NIC. I have ran a few Powershell commands to confirm the confirmation and from my research everything seemed ok. 

When I run the following command against the VM NICS for a particular VM  IovWeight IovQueuePairsAssigned and IovUsage are zero but Status and StatusDescription do not provide any reasons for it. 

PS C:\> Get-VMNetworkAdapter "RDSHVM" | fl *


 IovWeight                : 0
 IovQueuePairsRequested   : 1
 IovQueuePairsAssigned    : 0
 IovInterruptModeration   : Default
 IovUsage                 : 0
 ClusterMonitored         : True
 VirtualFunction          :
 IsLegacy                 : False
 IsManagementOs           : False
 IsExternalAdapter        : False
 Id                       : Microsoft:4C1FD1D4-2612-4596-8DD4-06EE2F76BBC0\1E2E4
                            F99-E233-4597-98C0-6909C8F74D9C
 AdapterId                : 1e2e4f99-e233-4597-98c0-6909c8f74d9c
 DynamicMacAddressEnabled : True
 MacAddress               : 00155D2F4703
 MacAddressSpoofing       : Off
 SwitchId                 : 02bf2bc3-b67b-4918-88d2-19a6fb9beaad
 Connected                : True
 PoolName                 :
 SwitchName               : EVN-SRIOV-A
 AclList                  : {}
 ExtendedAclList          : {}
 IsolationSetting         : Microsoft.HyperV.PowerShell.VMNetworkAdapterIsolatio


Hyper-V NDIS Capture Extension Error

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I have server 2012 R2 Datacenter running with several HyperV hosts on it.  The Intel Nic Drivers are 2012R2 out of the box drivers. I am setting up a monitoring VM to capture packets following these instructions. (I am also replicating the traffic on my Switch to the port the NIC for the Virtual Switch is connected to that I configured as the Mirror from the instructions.)

http://blogs.technet.com/b/networking/archive/2015/01/06/setting-up-port-mirroring-to-capture-mirrored-traffic-on-a-hyper-v-virtual-machine.aspx

When I enable the Microsoft NDIS Capture Extension on the Virtual Switch I want capture the traffic on, I get the message: 

"The Selected Extension is not operating correctly.  Check the event logs for further information. If this is a non-Microsoft Extention, contact the vendor for further troubleshooting steps." 

I looked in the event logs and cannot find any errors in Application or System.  I even turned on the show analytic and debug logs option and dug into the:

Applications and Services Logs ---> Microsoft --> Windows --> NDIS/NDIS-PacketCapture logs and didn't see any errors.

I cannot figure out why I am getting this error.   Does anyone know where else to look or why this error is coming up and how to fix it?  Again these are out of the box drivers and the Microsoft NDIS Capture Extension.

Thanks

Paul

Migrating Linux VMs

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Hello,

We are migrating our old datacenter to a new datacenter. The old datacenter has a Hyper-V 2008 R2 server with 1 Debian Linux VM running on it. I need to migrate this VM to our new Hyper-V 2012 R2 cluster. Due to the fact I haven't built this server and it appears to be a very complex configuration, I do not want to deploy a fresh installation and copy over the data manually. Is there a way to export this VM from 2008 R2 and deploy it in our 2012 R2 cluster? When the initial deployment is done I can easily synchronise changes with Rsync.

Thanks in advance.




Checkpoint apply/delete errors when using partitions mounted to a path

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We have a development environment that started out running on Windows Server 2012.  Since its a development environment with local attached storage (NOT SAN) and a lot of snapshot/checkpoints on the VMs we set it up a bit differently than you would a production Hyper-V environment. The VMs are all setup with dynamic VHDX files located in their own partition, the partition is mapped to a path c:\VMs\VMName.  This worked great under WS 2008 R2 and WS 2012.

Then we upgraded to WS 2012 R2.  When we did that we started noticing a problem with VMs with checkpoints.  Applying to different checkpoints in the same VM would often fail.  The error tracked down to not being able to find the AVHDX files generally.

So we got a new server in and set it up with WS 2012 R2 and set it up the same way with mounted paths to the partition.  Same problem occurred.  I then took the same VHDX file and set up a new VM on the same machine and used a drive letter mapped to the partition and no problems at all.   So it looks like the issue is using path mounts for the partitions instead of drive letters.

We went to this system largely because it let us get away with smaller partitions without worries of disk fragmentation.  Yes I know WS 2012 does disk defragmentation, but if you can avoid the issue in the first place...  Our other issue is we have more than 26 VMs so there aren't enough letters available to do the job unless we start putting multiple VMs on a partition.

I tried searching for a KB article but came up blank, largely probably because of the huge number of hits a search like this would turn up for everything but what I want.  I can figure out a workaround, but what I'd really like is a fix.  Has anyone seen this?

Thanks in advance for any help.


Bob

hyper windows 2012 operating system is free?

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hyper windows 2012 operating system is free? and it is equals to VMware EXSI 5.5? how to setup cluster between 2 hyper V host I am looking complete steps videos also appreciated

Would like to know about Hyper-V server 2012 licensing

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Hi Everybody, I am beginner to the virtualization, i want know the virtual machine licensing terms for Hyper-V server 2012.

It is free version, but how we can manage the virtual machine license?

How many VMs we can install?


Best Regards Rajendiran.S



Hyper-V guest fails to boot

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I have a Hyper-V guest that has suddenly stopped working and will not boot. Error message is:

Log Name:      Microsoft-Windows-Hyper-V-Worker-Admin
Source:        Microsoft-Windows-Hyper-V-Worker
Date:          25/08/2015 16:05:53
Event ID:      18590
Task Category: None
Level:         Critical
Keywords:      
User:          NT VIRTUAL MACHINE\DEBE1FE4-84A3-4490-AA2C-B7D75FAFA5C2
Computer:      xxxx
Description:
'xxxx' has encountered a fatal error.  The guest operating system reported that it failed with the following error codes: ErrorCode0: 0x7B, ErrorCode1: 0x5A5A28D0, ErrorCode2: 0xC0000034, ErrorCode3: 0x0, ErrorCode4: 0x0.  If the problem persists, contact Product Support for the guest operating system.  (Virtual machine ID DEBE1FE4-84A3-4490-AA2C-B7D75FAFA5C2)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Hyper-V-Worker" Guid="{51DDFA29-D5C8-4803-BE4B-2ECB715570FE}" />
    <EventID>18590</EventID>
    <Version>0</Version>
    <Level>1</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2015-08-25T15:05:53.516856100Z" />
    <EventRecordID>386</EventRecordID>
    <Correlation />
    <Execution ProcessID="3836" ThreadID="3376" />
    <Channel>Microsoft-Windows-Hyper-V-Worker-Admin</Channel>
    <Computer>srv-host-a</Computer>
    <Security UserID="S-1-5-83-1-3737001956-1150321827-3619105962-3265638239" />
  </System>
  <UserData>
    <VmlEventLog xmlns:auto-ns2="http://schemas.microsoft.com/win/2004/08/events" xmlns="http://www.microsoft.com/Windows/Virtualization/Events">
      <VmName>xxxx</VmName>
      <VmId>DEBE1FE4-84A3-4490-AA2C-B7D75FAFA5C2</VmId>
      <VmErrorCode0>0x7b</VmErrorCode0>
      <VmErrorCode1>0x5a5a28d0</VmErrorCode1>
      <VmErrorCode2>0xc0000034</VmErrorCode2>
      <VmErrorCode3>0x0</VmErrorCode3>
      <VmErrorCode4>0x0</VmErrorCode4>
    </VmlEventLog>
  </UserData>
</Event>

This guest has been running for over a year without any issues.

Anyone seen this before?

Thanks

Mike


Hyper-V Manager in Win 7 cannot connect to Hyper-V Server 2012 R2

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I can use the Hyper-V Manager in Windows 8.1 to connect my newly installed Hyper-V Server 2012 R2 - everything fine.

However, I cannot use the Hyper-V Manager in Windows 7 and Windows Vista to connect the same Server.

It just shows "Connecting to Virtual Machine Management Service ..."
Then "The operation on computer 'HYPERV' failed." - HYPERV is the computer name of the Hyper-V Server Core 2012 R2.

At the Win 7 and Vista clients, run the script [cscript hvremote.wsf /target:hyperv /show] shows everything PASS except the below warning.

-------------------------------------------------------------------------------
1 warning or error was found in the configuration. Review the 
detailed output above to determine whether you need to take further action.
Summary is below.
 
1: You are attempting to connect to a newer version of Hyper-V. 
  While some remote management *may* be possible, you should use a 
  matching operating system version on the client for full 
  management capabilities.

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

Run the script [cscript hvremote.wsf /show] at the Win 7 and Vista clients show everything fine.

Any help?
Thanks.

what is formula or logic of purchasing HYPERV

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what is formula or logic of purchasing HYPERV or VMware for instance if I buy HP G8 server 2 processor and 120 GB RAM so how many VM's I can allocate what is the formula?

Licensing under server 2012 std, can I use server 2008?

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I have a licensed host workgroup server running 2012 std. I understand I can license 2 VM's under the license agreement. Can one of my Hyper V machines be a Windows 2008 server that would get its license from the fact that is is a virtual machine under the licensed 2012 server host?

Server 2012 Datacenter Upgrade to Server 2012 R2 Datacenter

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Good Day Everyone,

Ok so my dilemma is that I HAVE to upgrade one of our 2012 Datacenter Servers w/Hyper-V hosting to 2012 R2. The part that troubles me is that I have 3 Production VM's on this server, do I have to migrate these off the Host Controller before I conduct the upgrade? Can I shut them down and just conduct the upgrade? What is the risk? I have backups of all the VM's, however I do not have another server currently setup to handle the Live Migration as they are full, but I could make something work if I had to move them before the upgrade.

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