On 05/16/2017 11:42 AM, Markus Armbruster wrote: >>> Well, to suggest something, I'd first have to figure out WTF incremental >>> block migration does. Your text helps me some, but not enough. What >>> exactly is being migrated, and what exactly is assumed to be shared >>> between source and destination? >>> >>> Block migration is scandalously underdocumented. >>
> Can you draft a documentation comment for @block-incremental? How about: @block-incremental: Affects how much storage is migrated when the block migration capability is enabled. When false, the entire storage backing chain is migrated into a flattened image at the destination; when true, only the active qcow2 layer is migrated and the destination must already have access to the same backing chain as was used on the source. (since 2.10) -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
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