I''m learning to use checkpoint (xl -save) in xen-4.2.1 ,however, It''s difficult to understand the code of function xc_domain_save() and asynchronous operations "AO". May I have the details of asynchronous operations "AO" ? Meanwhile ,I can''t figure it out what the difference between "xm -save" and "xm snapshot-create" is. Need your help urgently! Sincerely waitting for your response! Thank you! _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel