Importing Virtual Servers from Other Platforms

Before the actual import procedure, the destination virtual server must be created and deployed in Danube Cloud.

Note

When creating a destination virtual server disk, it is recommended to temporarily turn on the ZLE compression algorithm (in order to free unallocated space) or permanently turn on LZ4 compression.

Importing Virtual Server from Linux KVM

  • Obtaining necessary information about virtual disks of the source virtual machine.

    root@kvm-host-02:/storage/local/# ls -lah
    total 139G
    drwxr-xr-x 2 root root 4.0K Aug  3 05:12 .
    drwxr-xr-x 3 root root 4.0K Aug  3 05:12 ..
    -rw-r--r-- 1 root root 301G Nov  7 19:51 vm-100-disk-1.qcow2

root@kvm-host-02:/storage/local/# qemu-img info vm-100-disk-1.qcow2
    image: vm-100-disk-1.qcow2
    file format: qcow2
    virtual size: 300G (322122547200 bytes)
    disk size: 139G
    cluster_size: 65536

  • (Optional) For example, the NFS file system can be used in order to speed up the import procedure of virtual servers. The network file system enables to directly read data from the source server and write data to the target compute node. The transfer speed is affected by the speed of the network and IO performance of the source and target physical disk drives.

    [root@node01 ~] mount -F nfs -o vers=3,proto=tcp,retrans=3,timeo=10 \
    172.17.0.13:/storage/local/ /nfs

  • Determining the destination VM’s UUID.

    [root@node01 ~] vmadm list | grep demo.lan
    185da3d2-d7ed-467e-bbf5-f5ec7b8ce21c KVM 512 stopped demo.lan

  • Running the actual import process.

    [root@node01 ~] /opt/erigones/bin/qemu-img convert -p -f qcow2 \
    -O host_device /nfs/vm-100-disk-1.qcow2 \
    /dev/zvol/rdsk/zones/185da3d2-d7ed-467e-bbf5-f5ec7b8ce21c-disk0

    Warning

    Before starting the import process, the source and destination virtual machines must be turned off!

    Note

    The -p parameter displays the progress bar.

Importing Virtual Servers with MS Windows Server OS from VMware

Note

All preparatory tasks need to be performed on the VMware platform.

  • Uninstall VMware tools from the running virtual machine.

  • Download the latest VIRTIO drivers for Windows (https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso).

  • Install the VIRTIO drivers through the command line: pnputil -i -a D:\WIN8\AMD64\*.INF.

  • Turn off the virtual machine and copy the disk images onto the target compute node.

  • Running the actual import process.

    [root@node01 ~] /opt/erigones/bin/qemu-img convert -p -f vmdk \
    -O host_device /zone/migration/demo.vmdk \
    /dev/zvol/rdsk/zones/185da3d2-d7ed-467e-bbf5-f5ec7b8ce21c-disk0

    Warning

    Before starting the import process, the source and destination virtual machines must be turned off!

    Note

    The -p parameter displays the progress bar.