From: Chuck Lever <chuck.lever@oracle.com>
To: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: "Trond.Myklebust@netapp.com" <Trond.Myklebust@netapp.com>,
"bfields@fieldses.org" <bfields@fieldses.org>,
"linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
"devel@openvz.org" <devel@openvz.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"jlayton@redhat.com" <jlayton@redhat.com>
Subject: Re: [PATCH 0/3] lockd: use per-net refrence-counted NSM clients
Date: Fri, 14 Sep 2012 13:01:21 -0400 [thread overview]
Message-ID: <4030B8F9-5C67-4AE7-826E-B4B6AD4FAD01@oracle.com> (raw)
In-Reply-To: <20120914140811.10835.81465.stgit@localhost.localdomain>
What happens if statd is restarted?
Sent from my iPhone
On Sep 14, 2012, at 10:25 AM, Stanislav Kinsbursky <skinsbursky@parallels.com> wrote:
> This is a bug fix for https://bugzilla.redhat.com/show_bug.cgi?id=830862.
>
> The problem is that with NFSv4 mount in container (with separated mount
> namesapce) and active lock on it, dying child reaped of this container will
> try to umount NFS and doing this will try to create RPC client to send
> unmonitor request to statd.
> But creation of RCP client requires valid current->nsproxy (for operation with
> utsname()) and during umount on child reaper exit it's equal to zero.
>
> Proposed solution is to introduce refrence-counter per-net NSM client, which
> is created on fist monitor call and destroyed after the lst monitor call.
>
> The following series implements...
>
> ---
>
> Stanislav Kinsbursky (3):
> lockd: use rpc client's cl_nodename for id encoding
> lockd: per-net NSM client creation and destruction helpers introduced
> lockd: create and use per-net NSM RPC clients on MON/UNMON requests
>
>
> fs/lockd/mon.c | 91 +++++++++++++++++++++++++++++++++++++++++++-----------
> fs/lockd/netns.h | 4 ++
> fs/lockd/svc.c | 1 +
> 3 files changed, 77 insertions(+), 19 deletions(-)
>
>
> --
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next prev parent reply other threads:[~2012-09-14 17:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-14 14:25 [PATCH 0/3] lockd: use per-net refrence-counted NSM clients Stanislav Kinsbursky
2012-09-14 14:25 ` [PATCH 1/3] lockd: use rpc client's cl_nodename for id encoding Stanislav Kinsbursky
2012-09-14 19:08 ` Chuck Lever
2012-09-17 10:48 ` Stanislav Kinsbursky
2012-09-14 14:26 ` [PATCH 2/3] lockd: per-net NSM client creation and destruction helpers introduced Stanislav Kinsbursky
2012-09-14 14:26 ` [PATCH 3/3] lockd: create and use per-net NSM RPC clients on MON/UNMON requests Stanislav Kinsbursky
2012-09-14 17:01 ` Chuck Lever [this message]
2012-09-14 17:38 ` [PATCH 0/3] lockd: use per-net refrence-counted NSM clients Myklebust, Trond
2012-09-14 19:10 ` Chuck Lever
2012-09-17 10:49 ` Stanislav Kinsbursky
2012-09-17 15:10 ` Chuck Lever
2012-09-17 15:23 ` Stanislav Kinsbursky
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