netdev - Re: [PATCH v2 0/5] nfsd/sunrpc: allow starting/stopping pooled NFS server via netlink

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Date: Thu, 13 Jun 2024 12:01:03 -0400
From: Chuck Lever <chuck.lever@...cle.com>
To: Jeff Layton <jlayton@...nel.org>
Cc: Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>,
        Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Lorenzo Bianconi <lorenzo@...nel.org>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna@...nel.org>, linux-nfs@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2 0/5] nfsd/sunrpc: allow starting/stopping pooled NFS
 server via netlink

On Thu, Jun 13, 2024 at 08:16:37AM -0400, Jeff Layton wrote:
> This is a resend of the patchset I sent a little over a week ago, with
> a couple of new patches that allow setting the pool-mode via netlink.
> 
> This patchset first attempts to detangle the pooled/non-pooled service
> handling in the sunrpc layer, unifies the codepaths that start the
> pooled vs. non-pooled nfsd, and then wires up the new netlink threads
> interface to allow you to start a pooled server by specifying an
> array of thread counts.
> 
> Signed-off-by: Jeff Layton <jlayton@...nel.org>
> ---
> Changes in v2:
> - add new pool-mode set/get netlink calls

Applying this series to nfsd-next for broader exposure. Review
comments and test results are still welcome.

There are a couple of nits to be addressed in 2/5 and 4/5, and
we already discussed adding a disclaimer about changes to the
behavior of the /proc interface. So, can you fix these up and send
me a refresh?


> ---
> Jeff Layton (5):
>       sunrpc: fix up the special handling of sv_nrpools == 1
>       nfsd: make nfsd_svc call nfsd_set_nrthreads
>       nfsd: allow passing in array of thread counts via netlink
>       sunrpc: refactor pool_mode setting code
>       nfsd: new netlink ops to get/set server pool_mode
> 
>  Documentation/netlink/specs/nfsd.yaml |  27 +++++++++
>  fs/nfsd/netlink.c                     |  17 ++++++
>  fs/nfsd/netlink.h                     |   2 +
>  fs/nfsd/nfsctl.c                      | 102 +++++++++++++++++++++++++++++-----
>  fs/nfsd/nfsd.h                        |   3 +-
>  fs/nfsd/nfssvc.c                      |  30 +++++-----
>  include/linux/sunrpc/svc.h            |   3 +
>  include/uapi/linux/nfsd_netlink.h     |  10 ++++
>  net/sunrpc/svc.c                      | 102 +++++++++++++++++++++-------------
>  9 files changed, 225 insertions(+), 71 deletions(-)
> ---
> base-commit: fec4124bac55ad92c47585fe537e646fe108b8fa
> change-id: 20240604-nfsd-next-b04c0d2d89a9
> 
> Best regards,
> -- 
> Jeff Layton <jlayton@...nel.org>
> 

-- 
Chuck Lever