Hi all,
NetMap is a framework for high-performance direct-to-hardware packet IO, offering low latency and high PPS rates to userland applications while bypassing any kernel-side packet processing.
I am using a custom linux on Hyper-V and trying to add netmap support in it after coming to know about its features.
Do we have netmap supported in Hyper-V network driver(netvsc)?
Is anyone working on integrating netmap support for hyper-v network drivers ?
Thanks in advance,
Saleem
I have Hyper-V 2012 and 20 VM inside and it work well at the office then when I want to move the server machine to Datacentre and have one static IP and how do i manage to remote desktop to connect all 20 VM on one static IP? do I need to buy port forward router to enable forward to 20 vm on one static IP?
please help me how do i manage it work?
Thanks Howard Diesel
Hi there,
We're in the process of migrating our servers from Win Server 2003 R2 to 2012. Because of certain circumstances, we decided to first convert our 2 web servers, both running on 2003, to vms running on Server 2012.
I was able to successfully create an image using disk2vhd. The problem is, our servers have SCSI disks and and from what I've found, first generation VMs cannot boot from SCSI. I'd need 2nd generation vms for that, but Server 2012/Win8 is the minimum.
Is there a work around for this?
I rebooted my server, and after the reboot one of my VM wont start. Getting this error below. I have done many reboots of this server, and never got any issue with this error before.
Any idea how I solve this error?
I just received an dell power edge 2850, can I install windows server 2008r2 on this unit
I am using Virtual Machine Connection with Server 2008 R2 and runing Win 7 on VM. I follow all steps and choose a Physical hard disk: and choose the disk i would to add n prob. But after that i cannot see him active in the VM Win 7. If i go back to Disk Management in Server 2008 is standing there as offline (and i cannot put it online here says ACESS DENIED) so please give some tips how to fix this.
Thanks in advance
Joao
Hi.
I have made a couple of previous posts about lots of LUNs, pass-through disks etc, but I'm interested in some general views on it. A few people seem to have differing, strong opinions.
This my use case for lots of pass-through disks, which I have thought long and hard about and I think is fairly reasoned...
- First and foremost my I am running a platform that uses multiple hypervisors (Xen, Hyperv, etc) and single storage.
- I am using a SAN with an great automation API that will negate any and all potential management overhead that may occur from having lots of LUNs. In fact it is a management benefit for me, in some ways.
- I am using a SAN that does really good snapshots, and the way it maintains metadata means that these snapshots\clones can used as sort of backup in a very robust way.
- I am using a SAN that has lots of cool features that are granular to a LUN, like QoS, API calls for stats etc. It is better for me to split LUNs like this.
- I want to maintain architectural parity between my Hyper-V environment and the Xen (and potentiality other) environment(s), I know Hyper-V now does pretty good I/O QoS etc, but I would prefer to program and design using SAN level features and tools where possible.
- I am not concerned about corruption protection feature of VHDX because my SAN is clustered.
- I do not need to use differencing disks or anything because I can thinly provision volumes on the SAN.
- I don’t need to do storage migrations or anything like that.
- For some of the reasons I mentioned, I can do rapid provisioning with single per LUN per VM.
- I have now tested this thoroughly and the only scaling issue I have encountered is in the Hyper-V GUI, when opening a settings page. See this thread: http://social.technet.microsoft.com/Forums/windowsserver/en-US/e60a4e52-c423-4228-a3e0-4dc65ffe0e18/very-slow-opening-vm-settings-page-when-hypervisor-has-lots-of-logical-disks?forum=winserverhyperv#e60a4e52-c423-4228-a3e0-4dc65ffe0e18
Pass through disks in Windows are a mite faster than VHDX in my tests, but this really isn't what is driving me to use them. It is purely a design choice.
Thing is, I am worried because I see rumblings that Microsoft may possibly discontinue pass-through disks in the future. But surely, with things like VMWare VVol coming and also the way people use KVM and Xen in cloud environments, there will be some consideration for this type of use.
The VHDX format is really cool, but if you have an architectural preference for pass-through, is there really any reason not to use them?
Please put my mind at rest :)
Hello,
I recently created a remote desktop collection using windows server 2012 R2 on an HP ProLiant BL620c G7 Blade Server (which has completely up to date firmware and drivers). There are 30 VM’s running on the server, and it is running great – for the most part. My issue is that, it seems to be at random (maybe once every 48 hours), users will be disconnected from their session, and they are unable to log back into their session remotely. I can log into their session as a local user by going through hyper-v, however once I am in there I notice that I have no internet or network access. To solve this problem, I have to go onto the network adapter of the VM, disconnect the virtual switch assigned to the VM, and reconnect it again. Doing this provides remote access to the VM again.
I initially thought the issue came from the configuration of the virtual switch. The HP Blade Server has 4 10 gig NIC’s, and they were teamed into two teams (each team having 2 physical NIC’s). I created two separate external network virtual switches from each Team. I also had “allow management operating system to share this network adapter” checked. I noticed a warning on the server side when a disconnect would occur which was Event 16945 “MAC Conflict: A port on the virtual switch has the same MAC as one of the underlying team members on Team Nic Microsoft Network Adapter Multiplexor Driver.” Because this error occurred at the same time as a disconnect, I assumed that this warning message was causing the problem, and I was able to resolve it by redoing the NIC team to where there of the physical NICs were teamed together and a virtual switch was created from them without the checkbox that allowed management operating systems to share the network adapter. This left one NIC available for management purposes, and I haven’t seen the error message since, however disconnects still continue occur.
I do not see any helpful information in the event logs of the client VM when one of these disconnects occur, and the users are doing nothing out of the ordinary that would cause it to happen. In fact this problem has happened when a user has been disconnected from their machine for over 10 hours.
Anyone have any thoughts as to what is going on here?
I have successfully setup a number of Hyper-V (5) on Server 2008 R2 fail-over cluster environment with two nodes connected to a SAN using MS iSCSI Target 3.3 with cluster shared volume and all is working well.
Now each Hyper-v is run by node-A or node-B. is there a way to have both nodes process all Hyper-Vs at once?
Mike
I just finished deploying a new two node cluster. The network part is as follows:
New-NetLBFOTeam –Name ConvergedNetTeam –TeamMembers pNIC-300,pNIC-301,pNIC-400,pNIC-401,pNIC-901 –TeamingMode SwitchIndependent –LoadBalancingAlgorithm Dynamic -confirm:$false Set-NetLbfoTeamMember -Name pNIC-901 -Team ConvergedNetTeam -AdministrativeMode Standby New-VMSwitch "ConvergedNetSwitch" –NetAdapterName "ConvergedNetTeam" –AllowManagementOS 0 –MinimumBandwidthMode Weight Set-VMSwitch "ConvergedNetSwitch" –DefaultFlowMinimumBandwidthWeight 50 Add-VMNetworkAdapter -ManagementOS -Name "Management" -SwitchName "ConvergedNetSwitch" Set-VMNetworkAdapter -ManagementOS -Name "Management" -MinimumBandwidthWeight 10 Add-VMNetworkAdapter -ManagementOS -Name "LAN" -SwitchName "ConvergedNetSwitch" Set-VMNetworkAdapter -ManagementOS -Name "LAN" -MinimumBandwidthWeight 10 Add-VMNetworkAdapter -ManagementOS -Name "Cluster" -SwitchName "ConvergedNetSwitch" Set-VMNetworkAdapter -ManagementOS -Name "Cluster" -MinimumBandwidthWeight 10 Add-VMNetworkAdapter -ManagementOS -Name "Live Migration" -SwitchName "ConvergedNetSwitch" Set-VMNetworkAdapter -ManagementOS -Name "Live Migration" -MinimumBandwidthWeight 40 Start-Sleep -s 15 New-NetIPAddress -InterfaceAlias "vEthernet (Management)" -IPAddress 10.10.0.66 -PrefixLength 24 -DefaultGateway 10.10.0.1 Set-DnsClientServerAddress -InterfaceAlias "vEthernet (Management)" -ServerAddresses "10.10.0.47,10.10.0.53,192.168.2.51" New-NetIPAddress -InterfaceAlias "vEthernet (LAN)" -IPAddress 10.10.1.66 -PrefixLength 24 New-NetIPAddress -InterfaceAlias "vEthernet (Cluster)" -IPAddress 192.168.4.66 -PrefixLength 24 New-NetIPAddress -InterfaceAlias "vEthernet (Live Migration)" -IPAddress 192.168.5.66 -PrefixLength 24 Set-VMNetworkAdapterVlan -ManagementOS -VMNetworkAdapterName "Management" -Access -VlanId 150 Set-VMNetworkAdapterVlan -ManagementOS -VMNetworkAdapterName "LAN" -Access -VlanId 100 Set-VMNetworkAdapterVlan -ManagementOS -VMNetworkAdapterName "Cluster" -Access -VlanId 400 Set-VMNetworkAdapterVlan -ManagementOS -VMNetworkAdapterName "Live Migration" -Access -VlanId 500
I'm unable to achive speeds greater then 1GB on any of the individual virtual networks. For example I get 1GB on the Management network and I get 1GB on the Live Migration network, but would appreciate some guidance how I should change the above commands so I can get for example 2GB's on the Management network. When testing I am copying to different hosts (multiple streams).
Hi there,
I am trying to increase the display resolution to 1600x1050 for my virual server (Hyper-v), but the max I can get is 1280x1024.
I installed the Integration services and all the updates for the host os (win 2008 Enterprise) and guest os (win 2003 R2 Enterprise).
any idea?
Thanks,
LOA
I’m trying to setup a Server 2008 r2 test environment. I have setup a virtual machine but it will not start. I get below event error and this:
Log Name: Microsoft-Windows-Hyper-V-Worker-Admin
Source: Microsoft-Windows-Hyper-V-Worker
Date: 1/01/2014 5:12:49 p.m.
Event ID: 10044
Task Category: None
Level: Error
Keywords:
User: NT VIRTUAL MACHINE\9F176CD8-D32D-4932-AA4A-C7717CA4419A
Computer: PC.DOMAIN.local
Description:
The Virtual Machine Worker Process has lost its connection to the root\virtualization WMI namespace: General access denied error (0x80070005). As a result, some WMI operations may not function correctly. To correct the problem, try restarting the Windows Management Instrumentation service.
I have checked that WMI is started and I have also restarted the computer.
Thanks for the help.
Dear
Is it possible to between replicate 2012 R2 TO 2003 R2. Or is there any option for change primary DC to Secondary DC .
Thank you
Hello Gurus
i have installed windows server 2012 RTM with Hyper-V. i already created virtual machine with virtual fiber channel adapter connected to physical one. sometimes when i restart the virtual machine it gets failed to start again and the following error appears in the event viewer of the host:
error id 21502
'Virtual Machine xyz' failed to start.
'xyz' failed to start. (Virtual machine ID number)
'xyz' Synthetic FibreChannel Port: Failed to start reserving resources with Error 'Insufficient system resources exist to complete the requested service.' (0x800705AA). (Virtual machine IDnumber)
'xyz': Operation for virtual port (C003FF18F98C000E) failed with an error: No physical port available to satisfy the request (Virtual machine IDnumber).
error id 1069
Cluster resource 'Virtual Machine xyz' of type 'Virtual Machine' in clustered role 'xyz' failed. The error code was '0x5aa' ('Insufficient system resources exist to complete the requested service.').
Based on the failure policies for the resource and role, the cluster service may try to bring the resource online on this node or move the group to another node of the cluster and then restart it. Check the resource and group state using Failover Cluster
Manager or the Get-ClusterResource Windows PowerShell cmdlet.
appreciate your help
Ashraf
Our setup is the following:
Three Dell Poweredge R720s running Windows Server 2012 R2 (which was upgraded in place from 2012). These servers run Hyper-V and we use Virtual Switch Manager to manage the networking in the VMs. Due to the fact that the Ethernet ports do not map to the correctly labelled Ethernet adapters in the operating system, we have notes in the Hyper-V switch manager to show which virtual adapter is mapped to which physical port.
I'm not sure if it was after the upgrade to 2012 R2 or something else, but the notes from the Virtual Switch Manager have just disappeared. Everything else has stayed the same, but there's no notes any more. Has anyone else encountered this? Is there any way we can prevent this happening? We believe it is also happening when we do live migrations, but we need to do a few more tests to see what happen when, so I can't confirm.
Hi,
I wonder if anyone can clear something up for me.
We have two hosts running failover cluster and hyper-v. On these hosts we two Virtual DCs (one of which is our PDC) as well as a number of member servers. In Hyper-V integration services we have set the time synchronisation option for each server including the DCs. Each host is joined to the domain so that Failover Cluster works. We also have two physical domain controllers.
When we run w32tm /query /source we can see that the VMs, including the Virtual DCs are getting their time from the Hosts (VM IC Time Synchronization Provider) and when we run w32tm /query /source on the hosts we find that they are getting the time from each other (host1 has host2 and host2 has host1).
We are experiencing some time drift and I wonder whether this is due to the PDC getting its time from the host, instead of having its w32time type parameter setup to be NTP instead of NT5DS?
What's the best practice for a situation like this??
Thanks in advance!
Stephen
Hi all,
As always the best laid plans go to crap and so I need help from the best in the business, aka - all of you.
I am installing Windows 2012 Server Standard as a VM in Hyper V. I initially created it as a Vm in Server 2008 however for some reason the vm would not boot at a certain point . I installed the operating system fine from an ISO from the VLSC - rebooted fine etc. As soon as I started to create roles (just IIS with .net 3.5 roles etc) - no directory services, its purely operating as a web and sql server... - at some point it wont boot. I start the VM, connect to it - get the windows 2012 splash screen however it won't boot to the login screen. I can see CPU action for a period of time then NOTHING! - blank screen - no connection - no rdp.
I thought it was because of incompatibility between 2012 guest and 2008 host. So I upgraded the host to 2012 Hyper V Server Core (you know, the free one). That in itself was fine, all worked perfectly - all my 2008 Vm's are fine and operate well. I reinstalled 2012 Standard... Once again rebooted fine, however as soon as I added any roles or services (IIS) it just wont boot past the splash screen. I have installed VM guest drivers etc prior to installing roles and services - Nothing! Same behaviour, boots - see splash - see CPU activity in Hyper V Manager, then nothing.
I can only think it's a driver issue perhaps or something wrong with the iso - however it does not explain why it boots fine then suddenly stops. Has anyone else experienced this? Anything I can try? I managed to install all updates etc before this happened.
I really dont want to keep re installing. I havent activated yet as I wanted to make sure it worked before I did if that is a factor?
