Oooh, disk synchronization. Live migration but just for the block layer! Cool. I wonder what sorts of scenarios would benefit from using this instead of any of

Oooh, disk synchronization. Live migration but just for the block layer! Cool. I wonder what sorts of scenarios would benefit from using this instead of any of the dozen distributed database architectures it seems are out there. Incidentally while poking through https://www.qemu.org/docs/master/system/invocation.html https://www.qemu.org/docs/master/system/invocation.html I noticed that there are some COLO-related options in there, which is a bit exciting.