Hi,guys! Nowadays with linux kernel 3.x''s coming the modules of blktap/blktap2 are excluded in the mainline kernel and have no xenpatches for me to patch.However I have been doing some research on paravirtualized guest os and usually take a image file as the virtual block device.Thus if I would like to change the process of reading image files(PVM''s VBDs, whose format is raw) in xen,Which source code file should I scan first? hxkhust _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel