On 09/12/2010 05:37 AM, Avi Kivity wrote:
On 09/11/2010 05:04 PM, Anthony Liguori wrote:
Image files have two types of data: immutable data that describes
things like
image size, backing files, etc. and mutable data that includes offset
and
reference count tables.
Note: even the logical size is, in principle, mutable. If we
introduce external snapshots, then so are backing files?
Maybe it should be, "data the can be changed during a live migration".
Backing files and logical size shouldn't change during live migration.
But even so, I think the interface make sense. It's basically, drop
anything you have cached that may change during migration. What needs
to be read is dependent on features/format.
Regards,
Anthony Liguori
