Skip to content

For Xen VPS

The following should be performed to manually migrate Xen VPS (PV or HVM) from one node to another:

  1. Stop the required VPS in SolusVM > Virtual Servers > VPS > Shutdown. Note VMID of VPS, for example, it is vm101.

  2. Connect to the source slave node over SSH.

  3. Find a logical volume of the VPS:

    # lvdisplay | grep "LV Path" | grep "vm101"
    LV Path /dev/solusvm/vm101_img

  4. Create a copy of the logical volume:
    # dd if=/dev/yourvg/vm101_img | gzip | dd of=/home/vm101_backup.gz bs=4096
    Note: to see the progress of the copying, tansfer the copy to the target slave node, for example using the following command on the source node:
    # scp -C /home/vm101_backup.gz root@targetserverip:/home/
  5. Connect to the target server over SSH.

  6. Create a logical volume with the same size and name:

    # lvcreate -n vm101_img --size 10G /dev/yourvg
    Additional step for Xen PV - create a logical volume for swap with the same size as it is set in SolusVM > Virtual Servers > VPS:
    # lvcreate -n vm101_swap --size 1G /dev/yourvg

  7. Restore the copy to the created logical volume:
    # dd if=/home/vm101_backup.gz | gzip -d | dd of=/dev/yourvg/vm101_img bs=4096
  8. Connect to your Master node over SSH.

  9. Update Master node database with the new location of VPS

    # /scripts/vm-migrate ID NEWNODEID
    where ID - ID of the migrated VPS, can be seen in column ID in SolusVM > Virtual Servers; NEWNODEID - ID of the target node, can be seen in SolusVM > Nodes.
    For example:
    # /scripts/vm-migrate 20 5

  10. Reboot VPS via SolusVM > Virtual Server > migrated VPS > Reboot for changes to take effect and verify that it is working.

  11. After verifying correct work of VPS - remove logical volume on the source server:

    # lvremove /dev/yourvg/vm101_img

    For Xen PV also remove logical volume for swap:

    # lvremove /dev/yourvg/vm101_swap

Back to top