On Tue, Apr 23, 2013 at 2:31 PM, Wolfgang Richter <w...@cs.cmu.edu> wrote:
> On Tue, Apr 23, 2013 at 2:21 PM, Stefan Hajnoczi <stefa...@gmail.com>wrote: > >> Eric's suggestion to use NBD makes sense to me. The block-backup code >> can be extended fairly easier using sync mode=none (do not perform a >> background copy of the entire disk) and by disabling the bitmap >> (essentially "tap" mode). > > Also, as another thought, I think I can actually use the bitmap to implement an optimization. In my code, I already use a bitmap to determine which sectors I want to introspect (ignoring portions of the disk greatly reduces required bandwidth and overhead; swap space for example isn't generally interesting unless you can interpret memory as well). So I think I can adapt my code here as well.
