Re: [PATCH 0/1] Enable inter server to server copies on a export

Bruce Fields
2021-11-01T19:26:08Z

On Mon, Nov 01, 2021 at 03:10:31PM -0400, Steve Dickson wrote:
>
>
> On 11/1/21 14:39, Bruce Fields wrote:
> >diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> >index 91ba391f9b32..14bc3f0b0149 100644
> >--- a/Documentation/admin-guide/kernel-parameters.txt
> >+++ b/Documentation/admin-guide/kernel-parameters.txt
> >@@ -3243,6 +3243,19 @@
> > driver. A non-zero value sets the minimum interval
> > in seconds between layoutstats transmissions.
> >+ nfsd.inter_copy_offload_enable =
> >+ [NFSv4.2] When set to 1, the server will support
> >+ server-to-server copies for which this server is
> >+ the destination of the copy.
> >+
> >+ nfsd.nfsd4_ssc_umount_timeout =
> >+ [NFSv4.2] When used as the destination of a
> >+ server-to-server copy, knfsd temporarily mounts
> >+ the source server. It caches the mount in case
> >+ it will be needed again, and discards it if not
> >+ used for the number of milliseconds specified by
> >+ this parameter.
> >+
> > nfsd.nfs4_disable_idmapping=
> > [NFSv4] When set to the default of '1', the NFSv4
> > server will return only numeric uids and gids to
> >@@ -3250,6 +3263,7 @@
> > and gids from such clients. This is intended to ease
> > migration from NFSv2/v3.
> >+
> > nmi_backtrace.backtrace_idle [KNL]
> > Dump stacks even of idle CPUs in response to an
> > NMI stack-backtrace request.
> >
> Interesting... I don't see these in the Linus tree I'm looking at [1]
> find Documentation/ -type f | xargs grep -i inter_copy_offload_enable

I was suggesting that as a patch. It's queued up for 5.16 now.

--b.