On Fri, Jul 11, 2014 at 08:06:36AM -0600, Eric Blake wrote: > On 07/10/2014 09:01 PM, Liu Yuan wrote: > > This patch adds single read pattern to quorum driver and quorum vote is > > default > > pattern. > > > > For now we do a quorum vote on all the reads, it is designed for unreliable > > underlying storage such as non-redundant NFS to make sure data integrity at > > the > > cost of the read performance. > > > > > E.g, Enable single read pattern on 2 children, > > > > -drive driver=quorum,children.0.file.filename=0.qcow2,\ > > children.1.file.filename=1.qcow2,read-pattern=single,vote-threshold=1 > > > > [1] http://en.wikipedia.org/wiki/Distributed_Replicated_Block_Device > > > > Cc: Benoit Canet <ben...@irqsave.net> > > Cc: Kevin Wolf <kw...@redhat.com> > > Cc: Stefan Hajnoczi <stefa...@redhat.com> > > Signed-off-by: Liu Yuan <namei.u...@gmail.com> > > --- > > block/quorum.c | 174 > > +++++++++++++++++++++++++++++++++++++++++---------------- > > 1 file changed, 125 insertions(+), 49 deletions(-) > > That covers the command line, but what about the *.json changes to allow > QMP to select this mode when hot-plugging?
Good catch, thanks for reminding. Yuan
