* ???? (chenliang0...@icloud.com) wrote: > > > * ???? (chenliang0...@icloud.com) wrote: > >> > >> ?? 2014??4??8????????10:29??Dr. David Alan Gilbert (git) > >> <dgilb...@redhat.com> ?????? > >> > >>> From: "Dr. David Alan Gilbert" <dgilb...@redhat.com> > >>> > >>> Make qemu_peek_buffer repeatedly call fill_buffer until it gets > >>> all the data it requires, or until there is an error. > >>> > >>> At the moment, qemu_peek_buffer will try one qemu_fill_buffer if there > >>> isn't enough data waiting, however the kernel is entitled to return > >>> just a few bytes, and still leave qemu_peek_buffer with less bytes > >>> than it needed. I've seen this fail in a dev world, and I think it > >>> could theoretically fail in the peeking of the subsection headers in > >>> the current world. > >> hmm, I also have got some errors(infrequently). Maybe It is one point. > >> Could you show some messages about the error? > > > > I've only seen the errors in my visitor/ber world where I use the > > peek_buffer > > a lot more; but the one place it is used in the existing code is in > > the code to check if we have the start of a subsection; if that goes wrong > > I'm not sure what error would be produced. > > > > Dave > In my observation, error is more likely to happen if migration thread is > blocked too long. > BTW, xbzrle and auto convergence are disable.
What error do you see? Dave -- Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
