Hyper V high availability and BSOD handling

September 3, 2015, 6:14 pm

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Hi there

One of my customer is interested in a scanerio on Hyper V environment to be handled for fault tolerance. He has VMs running in a clustered host environment using Hyper V Windows 2012 server OS. What they are expecting is that when a VM1 goes BSOD for some reason would it be possible for us to do a Live/Quick Migration with the Hyper V HA/FT solution. They are looking for a solution which will allow the VM2 on the other host to come up with record and play and make sure the high availability is met. Is that a possible solution. If so can anyone please point me to article or settings to be done in the Hyper V environment.

Thanks

John

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John

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Deleted snapshot

September 7, 2015, 5:04 am

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I had to delete my snapshot to be able to expand one of the drives. After expanding I cannot start the system anymore. I still got the original VHDs and an an XML file in the Virtual Machines folder but that's all I got left in that folder. Is there a way to rebuild the system based on the VHDs and the xml?

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yaro

Hyper-V Dynamic Memory Demand Blank

June 10, 2014, 6:47 am

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Hi,

im wondering about a blank Memory demand Value at a virtual machine on my Windows 8.1 with enabled Hyper-V Feature. Inside the VM the OS is Hyper-V Server 2012 R2. I tried to update the Integration Services but they are actual already. Here is screenshot of the Memory Monitoring i get in the Hyper-V Console:

Can you help me guys?

Thanks

Michael

Cluster Validation Reports with various Warnings - Any Suggestions

February 10, 2012, 12:56 am

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Dear All,

I am running two nodes, when I run Cluster Validation wizard, I found the following Warnings, your help to get me out from these warnings will be appreciated.

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List Potential Cluster Disks

List disks visible to all nodes that will be validated for cluster compatibility. Online clustered disks will be excluded.
No disks were found on which to perform cluster validation tests. To correct this, review the following possible causes:
* The disks are already clustered and currently Online in the cluster. When testing a working cluster, ensure that the disks that you want to test are Offline in the cluster.
* The disks are unsuitable for clustering. Boot volumes, system volumes, disks used for paging or dump files, and disks that do not use NTFS are examples of disks unsuitable for clustering.
* The disks are not visible to all nodes (even though they are in shared storage). Review the "List All Disks" test to see which disks are visible to all nodes. Ensure that the disks you want to test are unmasked, that is, your masking or zoning does not prevent access to the disks. If the disks seem to be unmasked or zoned correctly but could not be tested, try restarting the servers before running the validation tests again.
* The cluster does not use shared storage. A cluster must use a hardware solution based either on shared storage or on replication between nodes. If your solution is based on replication between nodes, you do not need to rerun Storage tests. Instead, work with the provider of your replication solution to ensure that replicated copies of the cluster configuration database can be maintained across the nodes.

No disks were found on which to perform cluster validation tests.

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

 

Regards

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Rashid Kamal, MCP, MCSA, MCTS - Exchange, JNCIA, JNCIS (If you find it useful, mark this 'As Answer', so that it can be helpful to other community members reading the thread)

Hyper v host & VM's are unable to log in to domain remotely after active directory migration from 2008 to 2012

September 8, 2015, 7:49 am

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Hello all,

I have Hyper V core 2012 host(7 no.) & 36 Virtual machines hosted on it . After AD upgradation from 2008 to 2012 our hyper V hosts & virtual machines were unable to log on to domain remotely . They are showing error "please wait for local sessions manager". We tried to log on to servers physically, but the log on is very slow.

Virtual machine OS is Windows server 2012.

Please suggest..

Hyper -V and SOFS on same server

April 20, 2015, 3:08 pm

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Can HyperV and SOFS co-exist on the same cluster node?  NO Hyper-V will not be used to access the SOFS shares but instead have their own disks not part of SOFS.   SOFS will be accessed by other server outside of the cluster.

Up to this point I have only read that Hyper-V can not be used to access SOFS on the same cluster using loopback.  But in the proposed configuration, loopback is not part of the solution.

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RaoulB

Will this work: Hyper-V & VM installed on bootable USB3, then installed in dedicated box later

September 8, 2015, 7:42 am

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Here's an unusual question: I'm building a home server as a hobby. I want to use Hyper-V as a bare metal hypervisor.

I wonder if I can install some or all this on a bootable USB 3 hard drive and then install the physical drive in my little server box after it looks good. This will be a learn by doing project. The issue, to me, would be the drivers Hyper-V needs installed might be different for the USB drive as opposed to the final place the hard drive will eventually reside.

Basically, can I install most or all of the programming with it as a bootable USB and later install the drive in another box and expect it to boot up with no issues? 

VM1: pfSense router. Yes, I know there's chicken and egg problems even if I get it to work but it's only a hobby. I have a backup router.

VM2: Windows 7 pro or 8.1 pro, to be accessed via TeamViewer for light use on certain programs on certain occasions. Everything on the network can access a dedicated file server. Win Server 2012 Essentials would be overkill, or so I believe at this time.

pfSense might have some install issues as it needs to know about NICS during the install. I suppose I could do it last and on the box directly if needed.

The box is a supermicro J1900 fanless MB in a small case. It has 8GB RAM. It currently runs the pfSense router dedicated. The router alone barely registers on the CPU. One or another laptop will handle the initial USB 3 install. I can go from intel to intel, although different processor families will be involved.

As a secondary question: If I put Win 8.1 pro on the box directly and installed the Hyper-V feature for the pfSense router, what is the performance hit? Would it 24/7 reliable without concern? This latter method just doesn't seem right. Will I actually end up in the same place if I do it this way?

Hyper-V SOFS

December 12, 2013, 8:20 am

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HyperV 2012 JBOD architecture design and workloads

But you cannot have both Hyper-V and SoFS on the same hosts.

 

Please clarify the above statement from the Post

HyperV 2012 JBOD architecture design and workloads

My reason for asking.  Been studying Hyper-V Windows 2012 for a year.  Proposed Cluster;

1. Hardware 3 identical servers. OS's are 2 drives mirrored.  4 JBOD pass through 1 tb drives per server using 1 onboard SAS controller per box. (Intel S2600GZ MB)

All 3 in a Cluster with Host Storage Spaces, SMB.  SOFS for Virtual VHD Disks and VHD Files.  Classic File Services for Metadata access.

2 Virtual Machines per host. These virtual machines are 2 AD DC'S, 1 Exchange Server, 1 Remote Desktop Services Applications Server, 1 SQL Server (Contact Business Manager and Access Dbases) and 1 PSQL Server (Enterpise Product Management.)  The workload traffic is small - 50 users.  Staff also uses Office Suite.

It is my thought to combine the Cluster HA  and the SOFS/CFS Roles.   This post mentioned is the first I have come across stating the Hyper-V and SOFS must be on different hosts.  Please explain the rationale and data to support this statement, as I may need to go back to the drawing board.

Kevin Paulus  17+ years in MS IT and Networking.

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Failover Cluster Manager live migration fails with error code 1155 after 3%

September 8, 2015, 4:58 am

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I have a 2 node Win Srv 2012 Hyper-V cluster with cluster shared storage enabled.  I can do a quick migration of servers (or shut them down and migrate), but not a live migration.  When I try I get 3% completed and then error code 1155"The pending move for the role '{servername}' did not complete.  The event logs are annoyingly sparse. he event is repeatable upon demnd so im sure its a fixed configuration issue rather than a random event.

The Hyper-V-Hgh-Availability log shows event ID 21111

I have checked that the live migration settings are available and that network connectivity is correct but can not resolve this issue.

I have created a dedicated Network for the live migrations but to no avail.  Taking the cluster off line and running a repairing does not help.

I've seen others with this issue but no sign of a recorded resolution.  Any advise or information based upon experience would be greatly appreciated.

How to get the location of VHD files relative to path in parent machine for a given virtual machine using WMI classes for Windows 2012 R2?

September 8, 2015, 10:23 am

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       In Windows 2012 R2, the MsVM_ResourceAllocationSettingData for a given Virtual machine stores the hard disk resource Sub type as Microsoft HYPER-V:Synthetic Disk Drive. 

The following solution doesn't work in 2012 R2. 

http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/10/find-all-virtual-hard-disks-associated-with-a-virtual-machine-script.aspx

The connection field is Empty in Windows 2012 R2.

For ex. if the VHD is from E:\abc.vhd , I should be able to get the path E:\abc.vhd

 Can someone help me here?

Thanks

Guru

Is there a plan to add USB availability to Hyper-V?

September 8, 2015, 1:17 pm

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Hi all,

To Microsoft guys, I want to use usb in Hyper-V machines.   Are there any plans to do that?

Can't connect to MySQL on Ubuntu VM running on Hyper V from Workbench running on Windows Server 2012 Host

September 8, 2015, 9:42 am

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Hello. I am running Ubuntu off of Hyper-V on Windows Server 2012. I have installed MySQL in ubuntu. The bind-address in /etc/mysql/my.cnf is 127.0.0.1. I tried to change the bind-address to 192.168.0.1 by editing the my.cnf file and then restart mysql. But mysql does not restart. Do I really need to do this to connect to the mysql database on Ubuntu from Workbench on the Windows Sever 2012 host? I can't seem to connect. I also changed my virtual network switch in Hyper-V manager to 'internal', without luck. Any help would appreciated.

UPDATE: Ok. Got it to work by obtaining an external IP address from the router. I type ifconfig and use the output in my.cnf file. But what I want to do is to close the outside world (including the router), set my own IP address, and directly have Windows Server host and the Ubuntu VM talk directly to one another. I know you can do this by creating a internal virtual switch. But I am not getting that part to work.

Backup Exec on host parent partition

September 8, 2015, 4:06 pm

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Hi,

I was thinking of installing Backup Exec 15 on the host OS of a Hyper-V 2012 R2 server, in order to be able connect a library to system, disk-to-disk backups with follow-up tape backups.

The only other solution, would be to get a new server and run the library off the new server, and install Backup Exec on the new server.

I realize that Backup Exec can be intensive, but am trying to consolidate so not having to order another server.  The server will be used as a replica server, so possibly it could host running active VM guest systems, if necessary.

Any thoughts?  Would this be un-realistic in regards to performance, especially if the replica VM's would need to become the active VM's.  The replica guest VM's would be a Domain Controller, file server, print server, and possibly a SQL server with a couple of databases of 15GB and 30GB.

Unless there is a failure of the primary server this server would mainly run as a replica, with possibly a single active VM.

Thank you.

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Robert

Error Applying Virtual Switch Properties Changes

September 9, 2015, 12:30 am

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http://i.imgur.com/FXR6TAX.png?1( This is the error )

Hi guys, i need to create a virtual switch but i had a problem while creating. Any solution for this? Billion Thanks.

 

Slow disk response times child server in a cluster using ISCSI and MPIO

August 24, 2015, 7:42 am

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HI,

We have a 3 node windows 2012r2 cluster using HPStore Virutal ISCSI SAN with HP MPIO, with 3 separate CSV's.  Occasionally the child servers suffer high disk latency, response times in the 1000ms, however when we look at the parent servers they have good response times from the VHD's running via ISCSI. 

The servers have 2 1gb nics connected to the ISCSI network these never go above 15% utilisation even when high latency is being experienced.

Any pointers would be appreciated.

Regards Richard

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Richard

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Boot Failure - Reboot and Select Proper Boot Device -While trying to boot newly created VM from ISO or DVD Drive?

December 16, 2013, 12:14 pm

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Hello,

I have a new HP DL360eGen8 Server with a fresh install of Windows 2012 Standard running Hyper V.

I am trying to create and boot a new Windows 2008 VM and no matter what I do... Boot from ISO or DVD, I get a boot failure message while trying to create a new VM?

I have other new HP Servers and Dell Servers that I had no problem creating my VM's...

Now with this New HPDL360 I have a problem.  The HP server has all the latest driver updates etc?

I have tried to boot the VM from several different ISO downloads?  And also from the DVD drive directly?  Still the same boot failure error.

This sure is a really strange problem?  

Hyper-v usability - Stopping-Critical

May 2, 2014, 6:28 am

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I recently bought a new system, which works just fine. I installed Windows 2012 R2, installed a SSD drive and 3 Western Digital 4Tb Red drives. I've created my Storage pools and installed the hyper-v role. I've also patched Windows through the normal Windows update process. I started building the 1st VM machine on this system. 

What I'm noticing is that the VM will tend to go into a critical state. If I stop it the machine will go into a stopping-critical state. If I leave the machine running it can sometimes go into a running-critical state. Restarting the host machine doesn't solve the problem. Restarting the Hyper-v server doesn't seem to resolve the issue either. And more importantly, it seems that the Hyper-v management interface refreshes VMs slowly. Note, the rest of Windows operates great. The switches and buttons inside Hyper-v respond fine, but the VMs don't work hardly at all. I've tried using generation 1 and generation 2 VMs, it doesn't tend to make much of a difference. 

I thought at first that maybe my drives were just slow so I created a new VM on my SSD, which does something like 90,000 IOPS and tried it there. I get the same behavior. I think this issue looks like a coding problem with Hyper-v more so than an environment problem with Windows or the hardware.

Is this a known issue by Hyper-v? Why do VMs go into a critical state so often?What's the deal?

What logs are best to look at in this situation?

Hyper-V Server, Server Manager Issue

September 9, 2015, 11:37 am

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Hello,

I have installed a Hyper-V Server and joined my domain and am trying to manage the server remotely from a Windows Server 2012 install.  I have configured what I believe are the necessary firewall rules.  I can perform most management functions, but when I go to Server Manager - Add Roles and Features, I get the message "Server Manager is collecting inventory data.  The wizard will be available after data collection finishes.

Another clue of what may be going on, or perhaps a totally different issue, is that when I try to add a Virtual Switch to the target server in Hyper-V Manger on the  remote server I get an error message that "the computer failed to perform the requested operation because the RPC call failed"

Any advice on how to troubleshoot this issue?

Thanks,

Scott

Single physical server VDI setup

September 9, 2015, 4:11 pm

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I have a reasonably powerful Lenovo file server - Xeon CPU, RAID10 storage - configured as a workgroup server with the Hyper-V role installed. There are 2 VMs - a DC and a file server - these provide services to 5 domain joined computers in the office.

We now have a requirement to host one or two Windows 7 or 8 virtual desktops to be accessed remotely by specific clients of the company. I would like to use VDI, but I don't have the option of adding another physical server. I will be able to set up a second physical DC down the road when a legacy server becomes available, but at the moment the setup is as stated above.

What is the best way to configure this? I would like to leave the physical server not joined to the domain - can I still specify it as the virtualisation host in this case? I'm thinking that the file server would hold the connection broker role and the RD Web Access server role. Or should the DC hold the connection broker role?

If I absolutely have to I can add the physical server to the domain after setting up a second (physical) DC, but I'd prefer not to.

Thoughts?

Thanks,

Dave B.

Windows 10 Client cannot manage hyper-v 2012r2 using power shell

September 7, 2015, 3:16 pm

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Hello All,

So I have recently upgraded my workstation to Win10 and now none of my power shells that I use to manage my hyper-v 2012r2 cluster work.

For example if I run just the simplest command

Get-VM -ComputerName <hyper-v hostname>

Get-VM : The Hyper-V module used in this Windows PowerShell session cannot be used for remote management of the server '<hyper-v hostname>'. Load a compatible version of the Hyper-V module, or use Powershell remoting to connect directly to the remote server. For more information, see http://go.microsoft.com/fwlink/p/?LinkID=532650.
At line:1 char:1
+ Get-VM -ComputerName <hyper-v hostname>
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Get-VM], VirtualizationException

    + FullyQualifiedErrorId : InvalidOperation,Microsoft.HyperV.PowerShell.Commands.GetVM

Anyone else seen this and know how to load the older hyper-v modules?

Thanks

Chris