Re: [Qemu-devel] [PATCH 0/3] block devices record/replay update

["Pavel Dovgalyuk" <dovgaluk@ispras.ru>]

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Pavel Dovgalyuk

> -----Original Message-----
> From: Pavel Dovgalyuk [mailto:dovgaluk@ispras.ru]
> Sent: Monday, February 13, 2017 8:05 AM
> To: 'Pavel Dovgalyuk'; qemu-devel@nongnu.org
> Cc: kwolf@redhat.com; pbonzini@redhat.com; qemu-block@nongnu.org; mreitz@redhat.com
> Subject: RE: [PATCH 0/3] block devices record/replay update
> 
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> Pavel Dovgalyuk
> 
> > -----Original Message-----
> > From: Pavel Dovgalyuk [mailto:pavel.dovgaluk@ispras.ru]
> > Sent: Tuesday, January 31, 2017 2:57 PM
> > To: qemu-devel@nongnu.org
> > Cc: kwolf@redhat.com; pbonzini@redhat.com; dovgaluk@ispras.ru; qemu-block@nongnu.org;
> > mreitz@redhat.com
> > Subject: [PATCH 0/3] block devices record/replay update
> >
> > This set of patches includes several fixes for preserving
> > the state of the block device images while recording and replaying
> > virtual machine execution.
> >
> > blkreplay driver now creates temporary overlay for underlaying devices
> > This patch implicitly enables '-snapshot' behavior in record/replay mode.
> > blkreplay layer creates temporary overlays on top of underlaying
> > disk images. It is needed, because creating an overlay over blkreplay
> > with explicit '-snapshot' option breaks the determinism.
> >
> > ---
> >
> > Pavel Dovgalyuk (3):
> >       block: implement bdrv_snapshot_goto for blkreplay
> >       blkreplay: create temporary overlay for underlaying devices
> >       replay: disable default snapshot for record/replay
> >
> >
> >  block/blkreplay.c |   84 +++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  stubs/replay.c    |    1 +
> >  vl.c              |   10 +++++-
> >  3 files changed, 93 insertions(+), 2 deletions(-)
> >
> > --
> > Pavel Dovgalyuk