Although the same command can be used to perform a backup for both KVM and LXC, there are two separate commands available to restore the KVM and LXC virtual machines:
- qm restore: To restore KVM-based VMs
- pct restore: To restore LXC containers
The following command format will restore KVM VMs through the command line:
#qmrestore <backup_file> <new/old_vmid> <options>
Based on the previous command, if we want to restore our example KVM #100 from a backup onto local storage, it will appear as follows:
#qmrestore /var/lib/vz/dump/vzdump-qemu-110-2017_08_13-20_24_26.vma.lzo 110 -storage local
The following options can be used with the qmrestore command:
|
Options |
Description |
|
-force <int> |
The Boolean value is 0 or 1. This option allows for overwriting the existing VM. Use this option with caution. |
|
-unique <int> |
The Boolean value is 0 or 1. This assigns a unique, random Ethernet address to the virtual network interface. |
|
-pool <string> |
This is the name of the pool to add the VM to. |
|
-storage <string> |
This is the storage ID of the destination storage where the VM disk image will be restored. |
The following command format will restore LXC containers through the command line:
#pct restore <ct_id> <backupfile> <options>
Based on the previous command, if we want to restore our example container #101 onto local storage, it will appear as follows:
#pct restore 101 /var/lib/vz/dump/vzdump-lxc-101-2017_08_25-18_49_04.tar.lzo -storage local
The following options can be used with the pct restore command:
|
Options |
Description |
|
-force <int> |
The default value is 0 or 1. This option allows overwriting the existing VM. Use this option with caution. |
|
-cpulimit <int> |
The value range is from 0 to 128 with the default value as 0. This defines the number of CPUs or CPU time. Value 0 defines no CPU limit. |
|
-cpuunits <int> |
The value range is from 0 to 500,000, with the default value as 1,024. This defines the CPU weight of the VM in relation to other VMs. |
|
-console <int> |
The default value is 1. This defines the number of consoles to be attached to the container. |
|
-force <int> |
The Boolean value is 0 or 1. This allows overwriting of the existing container with the restored one. |
|
-hostname <string> |
This sets the hostname of the container after a restore. |
|
-memory <int> |
The default value is 512. This defines the amount of memory allocated for the container. |
|
-swap <int> |
The default value is 512. This defines the amount of swap space for the container. |
|
-password <string> |
This sets the root password in the container after a restore. |
|
-storage <string> |
This defines the destination storage ID where the container will be restored. |