On Tue, 15 Jun 2010 10:13:48 pm Christoph Hellwig wrote:
> If we want to support barriers with the cache=writethrough mode in qemu
> we need to tell the block layer that we only need queue drains to
> implement a barrier. Follow the model set by SCSI and IDE and assume
> that there is no volatile
If we want to support barriers with the cache=writethrough mode in qemu
we need to tell the block layer that we only need queue drains to
implement a barrier. Follow the model set by SCSI and IDE and assume
that there is no volatile write cache if the host doesn't advertize it.
While this might im