On 2015-01-26 19:29:03, Paolo Bonzini wrote: > > On 26/01/2015 12:13, Zhang Haoyu wrote: > > Thanks, Paolo, > > but too many internal snapshots were saved by customers, >> switching to external snapshot mechanism has significant impaction > > on subsequent upgrade. > > In that case, patches are welcome. :) > > > Another problem: > > drive_backup just implement one time backup, > > but I want VMWare's VDP-like backup mechanism. > > The initial backup of a virtual machine takes comparatively more time, >> because all of the data for that virtual machine is being backed up. > > Subsequent backups of the same virtual machine take less time, because > > changed block tracking (log dirty) mechanism is used to only backup the > > dirty data. > > After inittial backup done, even the VM shutdown, but subsequent backup > > also only >> copy the changed data. > > As mentioned before, patches for this are on the list. > I see, thanks, Paolo. > Paolo
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