Hi,
Hmm you don't seem to have replaced this with anything.
I think that's a behavioural change; the trick COLO did (I'm not sure if this
is still the way it works) is that they initiate the first migration
with block migration enabled so that the two hosts (with non-shared storage)
get sync'd storage, and then at the completion of that first migration
they then switch into the checkpointing mode where they're only
doing updates - that's why it gets switched off at this point
prior to the 1st checkpoint.
Weird, really.
I did't catch that.
Will investigate.
Yes, Dave is right, for non-shared disk, we need to enable block
migration for first cycle,
to sync the disks of two sides. After that, qemu will go into COLO
state which we need to
disable block migration.