How to manually migrate SolusVM Xen PV VPS to another node?

Question

How to manually migrate SolusVM Xen PV VPS to another node?

Answer

1. Connect to Source Xen node via SSH

2. Find path to logical volume of VPS as well as its size:

   # lvs | grep VMID
   VMID_img solusvm -wi-ao---- 20.00g
   VMID_swap solusvm -wi-ao---- 256.00m

   VMID of VPS can be found in SolusVM > Virtual Servers > VMID column.

   How to find VMID

   

   In this particular example path to logical volume is /dev/solusvm/VMID_img.

3. Create a copy of the logical volume of the VPS:

   # dd if=/dev/solusvm/VMID_img | gzip | dd of=/home/VMID_backup.gz bs=4096

4. Connect to destination node over SSH.

5. Create logical volumes for VPS and Swap with same sizes as on source node:

   The required volume group can be found with command vgs:

   # vgs
   VG #PV #LV #SN Attr VSize VFree
   solusvm 1 4 0 wz--n- <79.97g 53.84g

   # lvcreate -n VMID_img --size 20G solusvm
   # lvcreate -n VMID_swap --size 256M solusvm 

6. Transfer copy of LVM:

   # scp -r root@source_ip:/home/VMID_backup.gz /home/

7. Restore the copy:

   # dd if=/home/VMID_img of=/dev/solusvm/VMID_img

8. Connect to SolusVM Master node over SSH and update SolusVM Master with the new location:

   # /scripts/vm-migrate ID NODEID

   where
   ID - ID of the VPS in Virtual Servers> ID column.

   Where to find ID of VPS

   

   NODEID - ID of the node in Nodes > ID column.

   Where to find NODEID

   

9. Reboot VPS in Virtual Servers > VPS > Reboot.