Xe vdi-import uuid=$RESTORE filename=full.vhd format=vhd -progress RESTORE=$(xe vdi-create name-label=restore virtual-size=.) Note the 'vhd parent' field within delta.vhd will not directly reference 'full.vhd'.įirst create a fresh VDI to hold the data:

This should be a lot quicker than a full export and the output file should be smaller. Xe vdi-export uuid=$VDI base=$SNAPSHOT filename=delta.vhd format=vhd -progress You can export only the changes between the VDI and the snapshot with: This should work on all current vhd-based storage types (EXT, NFS)Īssuming you have taken a VDI snapshot with a command like: The vhd format can be *sparse*, so if there are unallocated blocks within the VDI which xapi is aware of, they will be omitted from the vhd therefore making the vhd smaller. Xe vdi-export uuid=$VDI filename=full.vhd format=vhd -progress The following command will export a VDI with uuid $VDI in vhd format to the local file 'full.vhd': Using the 'xe' CLI Exporting a full disk image

TODO: either expose a capability or suggest a 'try it and see' approach.

These APIs are present in the following xapi versions:

These APIs allow clients to efficiently backup and restore VM disks where only changed blocks are processed, rather than full disk images. These APIs provide a safe and efficient method to import and export Virtual Disk image (VDI) data to and from a host running xapi. 3.2 Importing a disk image (full or deltas).3.1 Exporting a disk image (full or deltas).2.4 Importing only changed blocks/deltas.2.2 Exporting only block changes/deltas.

Xen server vdi copy