On May 13, 2013, at 5:46 PM, "Richard W.M. Jones" <rjo...@redhat.com> wrote:
> On Mon, May 13, 2013 at 01:50:00PM -0400, Wolfgang Richter wrote: >> Paolo/anyone who knows - >> >> Are drive-mirror sync points (NBD flush commands) reflecting guest write >> barriers? Are guest write barriers respected by drive-mirror? If so, that >> would make drive-mirror much more palatable for disk introspection work (a >> drop-in usable feature of QEMU!). > > I'm also interested in this question. Further extensions to this > (*not* drive-mirror on its own AIUI) which stefanha is working on > should allow libguestfs to perform point-in-time snapshots of images, > which will mean that we can do complex and long-running inspection > operations on live guests. And I'm trying to do complex, long-running inspection on live guests without needing point-in-time snapshots :-)
