On Wed, May 15, 2013 at 08:21:54PM +0000, Myklebust, Trond wrote: > On Wed, 2013-05-15 at 16:19 -0400, J. Bruce Fields wrote: > > On Tue, May 14, 2013 at 02:15:26PM -0700, Zach Brown wrote: > > > This crude patch illustrates the simplest plumbing involved in > > > supporting sys_call_range with the NFS COPY operation that's pending in > > > the 4.2 draft spec. > > > > > > The patch is based on a previous prototype that used the COPY op to > > > implement sys_copyfileat which created a new file (based on the ocfs2 > > > reflink ioctl). By contrast, this copies file contents between existing > > > files. > > > > > > There's still a lot of implementation and testing to do, but this can > > > get discussion going. > > > > I'm using: > > > > git://github.com/loghyr/NFSv4.2 > > > > as my reference for the draft protocol. > > > > On a quick skim, one thing this is missing before it complies is a > > client implementation of CB_OFFLOAD: "If a client desires an > > intra-server file copy, then it MUST support the COPY and CB_OFFLOAD > > operations." > > Note that Bryan is currently working on updating the NFS implementation > to match the draft protocol. OK, good.--b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
