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Message-ID: <942eec9d7fa91c52ed99d1202c660f7b3182b707.camel@kernel.org>
Subject: Re: [PATCH v2 00/13] Make nfs and nfsd stats visible in network ns
From: Jeff Layton <jlayton@kernel.org>
To: Josef Bacik <josef@toxicpanda.com>, linux-nfs@vger.kernel.org, 
	kernel-team@fb.com
Date: Fri, 26 Jan 2024 08:12:18 -0500
In-Reply-To: <cover.1706212207.git.josef@toxicpanda.com>
References: <cover.1706212207.git.josef@toxicpanda.com>
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On Thu, 2024-01-25 at 14:53 -0500, Josef Bacik wrote:
> v1: https://lore.kernel.org/linux-nfs/cover.1706124811.git.josef@toxicpan=
da.com/
>=20
> v1->v2:
> - rework the sunprc service creation to take a pointer to the sv_stats.
> - dropped ->pg_stats from the svc_program.
> - converted all of the nfsd global stats to per-network namespace.
> - added the ability to point at a specific rpc_stat for rpc program creat=
ion.
> - converted the rpc stats for nfs to per-network namespace.
>
> -- Original email --
> Hello,
>=20
> We're currently deploying NFS internally and have run into some oddities =
with
> our usage of containers.  All of the services that mount and export NFS v=
olumes
> run inside of containers, specifically all the namespaces including netwo=
rk
> namespaces.  Our monitoring is done on a per-container basis, so we need =
access
> to the nfs and nfsd stats that are under /proc/net/sunrpc.  However these=
 are
> only tied to the init_net, which makes them invisible to containers in a
> different network namespace.
>=20
> Fix this so that these files are tied to the network namespace.  This all=
ows us
> to avoid the hack of bind mounting the hosts /proc into the container in =
order
> to do proper monitoring.  Thanks,
>=20
> Josef
>=20
> Josef Bacik (13):
>   sunrpc: don't change ->sv_stats if it doesn't exist
>   nfs: stop setting ->pg_stats for unused stats
>   sunrpc: pass in the sv_stats struct through svc_create*
>   sunrpc: remove ->pg_stats from svc_program
>   sunrpc: add a struct rpc_stats arg to rpc_create_args
>   sunrpc: use the struct net as the svc proc private
>   nfsd: rename NFSD_NET_* to NFSD_STATS_*
>   nfsd: expose /proc/net/sunrpc/nfsd in net namespaces
>   nfsd: make all of the nfsd stats per-network namespace
>   nfsd: move th_cnt into nfsd_net
>   nfsd: make svc_stat per-network namespace instead of global
>   nfs: expose /proc/net/sunrpc/nfs in net namespaces
>   nfs: make the rpc_stat per net namespace
>=20
>  fs/lockd/svc.c              |  5 +--
>  fs/nfs/callback.c           |  5 +--
>  fs/nfs/client.c             |  5 ++-
>  fs/nfs/inode.c              |  8 ++---
>  fs/nfs/internal.h           |  2 --
>  fs/nfs/netns.h              |  2 ++
>  fs/nfsd/cache.h             |  2 --
>  fs/nfsd/netns.h             | 28 ++++++++++++---
>  fs/nfsd/nfs4proc.c          |  6 ++--
>  fs/nfsd/nfs4state.c         |  3 +-
>  fs/nfsd/nfscache.c          | 40 +++++----------------
>  fs/nfsd/nfsctl.c            | 16 ++++-----
>  fs/nfsd/nfsfh.c             |  3 +-
>  fs/nfsd/nfssvc.c            | 13 +++----
>  fs/nfsd/stats.c             | 53 ++++++++++++----------------
>  fs/nfsd/stats.h             | 70 +++++++++++++------------------------
>  fs/nfsd/vfs.c               |  5 +--
>  include/linux/sunrpc/clnt.h |  1 +
>  include/linux/sunrpc/svc.h  |  9 +++--
>  net/sunrpc/clnt.c           |  2 +-
>  net/sunrpc/stats.c          |  2 +-
>  net/sunrpc/svc.c            | 44 ++++++++++++++---------
>  22 files changed, 147 insertions(+), 177 deletions(-)
>=20

Nice work!

I took a look and this all looks good to me, modulo the nits that Chuck
pointed out yesterday.=A0I'd also plan to split this into client and
server sets since they'll probably go in separately. Otherwise though,
this looks good to me and you can add:

Reviewed-by: Jeff Layton <jlayton@kernel.org>