On Fri, 19 Aug 2022 at 19:10, Alex Bennée <alex.ben...@linaro.org> wrote: > > Try to correct any confusion about QEMU's Byzantine disk options by > laying out the preferred "modern" options as-per: > > "<danpb> (best: -device + -blockdev, 2nd obsolete syntax: -device + > -drive, 3rd obsolete syntax: -drive, 4th obsolete syntax: -hdNN)" > > Signed-off-by: Alex Bennée <alex.ben...@linaro.org> > Cc: qemu-bl...@nongnu.org > Cc: Kevin Wolf <kw...@redhat.com> > Cc: Hanna Reitz <hre...@redhat.com> > Cc: Daniel P. Berrange <berra...@redhat.com> > Cc: Thomas Huth <th...@redhat.com> > --- > qemu-options.hx | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/qemu-options.hx b/qemu-options.hx > index 3f23a42fa8..d57239d364 100644 > --- a/qemu-options.hx > +++ b/qemu-options.hx > @@ -1105,6 +1105,19 @@ DEFHEADING() > > DEFHEADING(Block device options:) > > +SRST > +The QEMU block device handling options have a long history and > +have gone through several iterations as the feature set and complexity > +of the block layer have grown. Many online guides to QEMU often > +reference older and deprecated options which can lead to confusion.
"options, " > + > +The recommended modern way to describe disks is to use combination of "a combination" > +``-device`` to specify the hardware device and ``-blockdev`` to > +describe the backend. The device defines what the guest sees and the > +backend describes how QEMU handles the data. thanks -- PMM
