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4

While it might not look like one, Hyper-V actually is a type-1 hypervisor, because the virtualization layer is placed below the Windows operating system and mediates all hardware access (some time ago, before hardware-assisted virtualization improved a lot, it was very common to experience really slow graphic performance on Hyper-V hosts, due to the O.S. ...


3

To change the state of the network link for a KVM guest it would be much better to use the appropriate tool, i.e. the hypervisor virsh domif-setlink domain interface-device state Modify link state of the domain’s virtual interface. Possible values for state are "up" and "down". If --config is specified, only the persistent configuration of the ...


2

You don't need to do anything else. Go shutdown and start the VM.


1

I was able to get this working by following these instructions: http://scientificlinuxforum.org/index.php?showtopic=2858 I had to re-create my virtual machines by importing each existing drive image to get them all working again, but other than that it all went well. Have not had much chance to check performance yet.


1

Perhaps you can use device passthrough on ESXi to pass a video card and USB (keyboard/mouse) to a guest VM that you then use to manage the other hosts at that same box. You would have an additional keyboard/mouse and monitor (unless you have the option of having dual inputs on your display).


1

No such thing as a "baremetal" hypervisor, unless it actually runs on-chip. Xen, ESXi, Hyper-V - all are a double kernel stack, where the hypervisor OS boots, and then brings up a secondary management OS. While the VMs are running on the hypervisor, it doesn't mean the hypervisor level is not an OS, as stripped down as it may be. As for KVM, it simplifies ...


1

If you want a drop-in replacement, with minimal downtime, you had to copy the entire virtual disks on another, similar hosts. Basically, you must: snapshot the host's LVs copy the virtual disks on another similar host copy the virtual machine definition files (.xml) to the other host If your virtual disks are normal image files, you can copy them using ...


1

Many virtualization host operations on the guest can result in a pause - resume. This will negatively effect the system clock at the guest. For example, cloning a VM results in a pause while cloning. The guest clock afterwards is behind. To get NTP to sync the clock you need to then restart the guest--not a good solution in all cases for sure. Alternative ...


1

Having the same problem here. Solution is to flush the IPV6 route cache after setting the route: ip -6 route flush cache Changing your interfaces section to: ... auto virbr_external iface virbr_external inet6 static bridge_ports none bridge_stp off bridge_fd 0 address 2a01:4f8:X:Y:1::2 netmask 80 up ip -6 route add 2a01:4f8:X:Y:2::/80 ...


1

Inntran's is right here: you can't use VM acceleration without loading a kernel module/driver, which need administrative privileges. However, this seems a bad method of software distribution to mee: you don't need to deploy a Ubuntu images on every client, you simply need to install a single, shared instance and use it via SSH (for text-only programs) or ...


1

I had eventually worked out that the displayed load was being caused by the speed of the hard drives, and the RAID set up I was using. I had been using BIOS-based RAID (fakeRAID) with two 7,200RPM Toshiba drives, and it appears as though the drives were not being written to fast enough, causing CPU back log. Just using iotop on it's own didn't show any ...


1

Having upgraded to a more recent version, I can confirm that the slow performance previously experienced is a thing of the past. The version packaged for Ubuntu 'Trusty' is over two years old (0.9.5 vs 1.2.0). Upgrading isn't too difficult except maybe for figuring out which dependencies are required (the newer version seems to have quite a few more than ...


1

To make shutdown work from outside the guest on CentOS 6, you need to install the acpid package and start the acpid service. yum install acpid chkconfig acpid on service acpid start



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