Received-SPF: pass (google.com: domain of linux-nfs+bounces-2206-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161;
Precedence: bulk
MIME-Version: 1.0
References: <1709504582-8311-1-git-send-email-dai.ngo@oracle.com>
In-Reply-To: <1709504582-8311-1-git-send-email-dai.ngo@oracle.com>
From: Cedric Blancher <cedric.blancher@gmail.com>
Date: Tue, 5 Mar 2024 09:49:08 +0100
Message-ID: <CALXu0UeJ-s4hOmjOa=SndBx15a1VmEXmGcdhhbouMrSPTMni9A@mail.gmail.com>
Subject: Re: [PATCH v2 1/1] NFSD: send OP_CB_RECALL_ANY to clients when number
 of delegations reaches its limit
To: linux-nfs@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"

On Sun, 3 Mar 2024 at 23:23, Dai Ngo <dai.ngo@oracle.com> wrote:
>
> The NFS server should ask clients to voluntarily return unused
> delegations when the number of granted delegations reaches the
> max_delegations. This is so that the server can continue to
> grant delegations for new requests.

What is this limit max_delegations? Where is it set, and where can an
admin alter it at runtime?

Are you aware that for example the msnfs41client Windows NFSv4.1
driver easily uses a few hundred delegations, as required by the
highly multithreaded nature (i.e. every Win32 syscall is async) of the
Windows kernel?

Ced
-- 
Cedric Blancher <cedric.blancher@gmail.com>
[https://plus.google.com/u/0/+CedricBlancher/]
Institute Pasteur