Updated at: 2022-12-09 03:49:50
To back up VM configuration version 8.0/9.0,
Step 1 The client on the Hyper-V node where the target VMs reside invokes the WMI interface to create a VM RCT snapshot (checkpoint).
Step 2 The client obtains the disk path and RCT information of the VM snapshot (checkpoint), and mounts the virtual disks corresponding to the VMs to the Hyper-V node.
Step 3 Query changed data block information based on the last backup RCT information, used to calculate the data blocks to be backed up for incremental backup. For full backup, this step is skipped.
Step 4 The client reads the data in the virtual disks mounted to the Hyper-V node, and backs up the RCT information of the virtual disk and the VM configuration file vm.xml or vvm.vmcx, vm.vmrs.
Step 5 Delete the snapshot (checkpoint) after the backup is completed.
Step 1 The client on the Hyper-V node where the target VMs reside invokes the WMI interface to create a VM RCT snapshot (checkpoint).
Step 2 The client obtains the disk path and RCT information of the VM snapshot (checkpoint), and mounts the virtual disks corresponding to the VMs to the Hyper-V node.
Step 3 Query changed data block information based on the last backup RCT information, used to calculate the data blocks to be backed up for incremental backup. For full backup, this step is skipped.
Step 4 The client reads the data in the virtual disks mounted to the Hyper-V node, and backs up the RCT information of the virtual disk and the VM configuration file vm.xml or vvm.vmcx, vm.vmrs.
Step 5 Delete the snapshot (checkpoint) after the backup is completed.
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