[libvirt] live migration copy-storage-all , inc

[Pankaj Rawat]

Hi all,
I am currently doing live migration task KVM/qemu based virtual machine

I want to know what is exact difference between following:
copy-storage-all option and copy-storage-inc option
what are necessary steps for doing both?

as per my knowledge 'copy-stoarage -all' migrates whole disk image to destination where 'copy-storage-inc' is when we use backing files for guest .
with copy-storage-inc we require backing image on both destination and source but I want to know how destination guest get its base image how they share base image?
Is there any link need to be created for this base image? or is there need for NFS ?

How to set up both options ? what are necessary steps need to follow before starting migration ?
Please help me!



Regards
Pankaj Rawat




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