Hello. Can you please advise me? I have just installed WIndows Server 2016 on a new Dell Server. I have also added Three Hyper V machines and the settings to the Hyper V machines are in E:\HyperV\ Now in explorer I can see E:\HyperV\LeyMacMySQL\Virtual Hard Disks\LeyMacMySQL.vhdx The file size is 26.8GB and the Attributes are A and in Availability it shoes Available offline. Now when I go to Import Virtual Machine, I navigate to the folder and it says No Items match your search and I can not see the file there. I can however make a new Virtual Machine by using this file, but why can I not see it to Import it back?

Thanks Paul.

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Hyper-V 2019 Cluster - Monitored Services Unable to connect

March 11, 2019, 1:40 am

≫ Next: Windows Admin Center Hyper-V cluster

≪ Previous: Cant Import Virtual Machine

We have built a new 3-node Hyper-V Server 2019 cluster with shared SAS connected storage.

Guests servers are running fine (Windows 2019 Standard), but I am unable to get the Failover Cluster Manager to monitor the guest services.

Error message is "Unable to retrieve the list of services from the virtual machine XXXXX."

Guests, hosts and Failover Cluster are int he same subnet
All are in the same Active Directory
I'm using a domain admin account
Virtual Machine Monitoring firewall rule is enabled

Any ideas what I'm missing to get this working?

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Windows Admin Center Hyper-V cluster

March 6, 2019, 9:35 am

≫ Next: Issues with SCP in CentOS VM

≪ Previous: Hyper-V 2019 Cluster - Monitored Services Unable to connect

I added my Hyper-V fail-over cluster to Windows Admin Center but when i go to Virtual machines i am only seeing VMs from 1 of the 2 hosts .

Do i need to install the service on both hosts ?

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Issues with SCP in CentOS VM

March 6, 2019, 1:21 pm

≫ Next: Extending or creating a volume

≪ Previous: Windows Admin Center Hyper-V cluster

TL;DR:

SCP from our Linux VM hangs after it reaches 100%.

The Setup

In the course of development, my team has created a CentOS VM which hosts an application that employs SSH (and SCP) in order to execute tasks on other hosts. Originally, this was working perfectly fine.

We were originally using Oracle VirtualBox since it's recommended for VM development but our company decided that we should use Hyper-V for development as well so we made the switch.

This application is still just in the development phase so the VM is just running on Hyper-V for Windows 10. We're using Vagrant to stand up the VM very quickly and forwarding the port that the application is running on using a PowerShell command. We simply attach the VM to the default switch. This works as intended, the application is accessible on that port.

Issue with SSH

Very quickly our application was beginning to fail when it came to the SSH connection to other hosts. We had to modify the SSH configuration in order to set the HMACs by going to /etc/ssh/ssh_config and uncommenting the HMAC line. This fixes the SSH issue and we're able to SSH to other hosts perfectly fine after this. It's odd considering that this was not an issue with VirtualBox but at least we have a workaround.

Issue with SCP

After we got SSH working, we noticed that SCP was having issues. This one is a bit more odd. When attempting to SCP a file from our node to another, the percentage indicator reaches 100% then it hangs indefinitely. This will successfully create the file on the target but that file will be empty. Increasing the verbosity of the SCP utility we see:

SCP Output:

scp -vvv tst.txt user@target.domain:/tmp/
...
debug1: Sending command: scp -v -t /tmp/
debug2: channel 0: request exec confirm 1
debug3: send packet: type 98
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug3: receive packet: type 4
debug1: Remote: Missing locale support for LANG=en_US.UTF-8
debug2: channel 0: rcvd adjust 201600
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: exec request accepted on channel 0
Sending file modes: C0664 12840 test.txt
test.txt                                                     100%   13KB   0.1KB/s   02:52

strace:

It seems to be stuck in a loop because the following block is repeated in the strace until I kill the process with Ctrl + C:

...
write(1, "\rtest.txt                       "..., 185) = 185
rt_sigaction(SIGALRM, NULL, {0x555900a4ebf0, [], SA_RESTORER|SA_INTERRUPT, 0x7fc354919280}, 8) = 0
alarm(1)                                = 0
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
read(7, 0x7ffe718fdb0f, 1)              = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---```
...

Specs:

Host: Hyper-V Manager V10.0.17763.1 on Win 10 Enterprise (V1809)

Guest: CentOS 7.6 x64 (latest) using Default Switch

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Extending or creating a volume

March 6, 2019, 10:14 pm

≫ Next: Hyper-V (PowerShell) parametrer -ManagementOS

≪ Previous: Issues with SCP in CentOS VM

Platform

Hyper V Server 2016
Management platform: Server Manager and native Powershell

In the the image below you will notice spare space on a local drive where I wish to add another volume or partition. UsingComputer Management via Server Manager, the option is not available. How can I do this with HyperV?

Thanks

MIS5000

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Hyper-V (PowerShell) parametrer -ManagementOS

March 7, 2019, 6:16 am

≫ Next: Removing a CSV

≪ Previous: Extending or creating a volume

Hi Guys,

pls, can someone explain me, what does parameter -ManagementOS do? By default the value is False.

(Set,Add)-VMNetworkAdapter -ManagementOS -Name 'Network Adapter' -SwitchName 'Internal Switch'

Thanks for help :)

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Removing a CSV

March 7, 2019, 6:59 am

≫ Next: Booting Hyper-V Gen 2

≪ Previous: Hyper-V (PowerShell) parametrer -ManagementOS

Windows Server 2016 With Storage Spaces Direct:

My first CSV is a 2-way Mirror that I want to remove. I have used "Move Virtual Machine Storage" to emtpy Clusterstorage\volume1". All VMs are running OK on another CSVs now. However there is 1 file left on volume1: \Hyper-V\shared\Groups\groupregistry.vmcx. The file cannot be deleted. The cluster looks OK if I set the CSV to offline and remove the file, but before I removed the CSV i noticed that VM migration between nodes did not work. As soon as the CSV was enabled again everything went back to normal, and a new file groupregistry.vmcx was created.

Is the cluster dependent on volume1, or is this configurable? How can I get this disk removed and replaced? Or can the disk be reconfigured as a 3-way Mirror or Parity?

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