Anthony Liguori wrote:
Live migration happens in the background, but it is useful to make the monitor
command appear as if it's blocking. This allows a management tool to
immediately know when the live migration has completed without having to poll
the migration status.
This patch allows the monitor to be suspended from a monitor callback which
will prevent new monitor commands from being executed.
This means that migration is no longer transparent. While migration is
going on, you can't change the cdrom media, look at cpu registers, or do
anything that requires the monitor.
This both reduces the functionality and complicates management
applications. IMO migration should have asynchronous notification (and
no, I don't think multiple monitors is the correct solution).
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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