Messages in this thread | | | Date | Fri, 13 Apr 2007 21:07:34 -0400 | From | Chuck Lever <> | Subject | Re: Merge plans for RPC/RDMA? (Was: Re: [NFS] [PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.) |
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Mike Snitzer wrote: > On 4/13/07, Chuck Lever <chuck.lever@oracle.com> wrote: >> Mike Snitzer wrote: >> > On 2/2/07, Chuck Lever <chuck.lever@oracle.com> wrote: >> >> Roland Dreier wrote: >> >> > > They are mostly from Chuck Level and make preparating for IPv6 >> >> support >> >> > > in the NFS server. >> >> > > They are *not* for 2.6.20, but should be ok for .21. >> >> > >> >> > Out of curiousity, does this patch series reduce the delta >> between the >> >> > NFS/RDMA tree and mainline Linux? In other words does this bring >> >> > NFS/RDMA closer to merging? >> >> >> >> Hi Roland- >> >> >> >> The client side support for an RPC/RDMA module is almost completely >> >> integrated into mainline. There is still a minimal set of patches >> >> required to support alternate transports in loadable kernel modules >> >> which Trond has indicated he will integrate when the RPC/RDMA >> transport >> >> is ready to be integrated. >> > >> > Hi Chuck, >> > >> > I must be missing something because I don't see _any_ trace of the >> > core RPC over RDMA support (xprtrdma et al), your RPC Transport >> > Switch, or any of the other supporting changes in mainline. Could >> > you, or others, please clarify the plan for merging RPC/RDMA? >> >> The RPC transport switch patches are almost fully integrated into >> mainline. The xprtrdma piece is what is not there yet. > > OK, has the xprtrdma piece been reviewed by the community? What, if > anything, is preventing the code from being included in -mm for wider > testing?
Some of the main NFS client developers (Trond, the CITI-UM developers, myself) have reviewed previous versions of this code, and have recommended a number of changes. I haven't heard anything recently from the NetApp engineers working on this. We are waiting for them to publish again, but I think they are waiting for the last of the transport switch patches to trickle into mainline (which should be ready with the release of 2.6.21). I know they have been working with a handful of test sites and have achieved good performance results.
> Has xprtrdma inclusion/progress been discussed on some other mailing > list?
Not yet, but the place that is likely to occur is nfs@lists.sourceforge.net. begin:vcard fn:Chuck Lever n:Lever;Chuck org:Oracle Corporation;Corporate Architecture: Linux Projects Group adr:;;1015 Granger Avenue;Ann Arbor;MI;48104;USA email;internet:chuck dot lever at nospam oracle dot com title:Principal Member of Staff tel;work:+1 248 614 5091 x-mozilla-html:FALSE version:2.1 end:vcard
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