[dm-devel] [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support

[Rusty Russell]

On Tue, 17 Aug 2010 10:53:27 pm Christoph Hellwig wrote:
> Given how little testing lguest gets compared to qemu I really don't
> want a protocol addition for it unless it really buys us something.
> Once we're done with this barrier conversion I plan into benchmarking
> FUA and a pre-flush tag on the command for virtio in real life setups,
> and see if it actually buys us anything.

Absolutely.  Lguest should follow, not lead!

Rusty.