At Wed, 16 Nov 2011 03:12:39 -0500, Christoph Hellwig wrote: > > On Wed, Nov 16, 2011 at 02:07:07PM +0900, MORITA Kazutaka wrote: > > At Tue, 15 Nov 2011 17:06:52 -0500, > > Christoph Hellwig wrote: > > > > > > This patch implement support for writeback-style cache in the sheepdog > > > protocol. The SD_OP_FLUSH_VDI command will flush all data for the > > > referenced VDI to stable storage. > > > > > > XXX: we'll need to figure out if the sheep server actually support this > > > command somehow. > > > > If we increment SD_PROTO_VER, the sheep daemon should return > > SD_RES_VER_MISMATCH error when opening the VDI. > > And then revert to trying the old protocol revision if it fails? Sounds > like that would be worth a try.
Or perhaps it might be better not to support the old protocol in the qemu block driver? It will make the code complicated. Thanks, Kazutaka -- sheepdog mailing list [email protected] http://lists.wpkg.org/mailman/listinfo/sheepdog
