1:39 p.m.
Yea, the notify lock callback is not supported, that would take some effort to implement
non-blocking locks for NFS v4.1 which is complicated in that I'm not sure if the
callback is a guaranteed deal, that the client will send some kind of cancellation if it
gives up waiting for a blocked lock, If not, then we need to time out 4.x blocked locks.
We also have to make them provisional until the client actually comes back with a new lock
request, which means they COULD be handed out to another client in the meantime. This
provisional (or courtesy) behavior may be hard to assure in a cluster or even a single
node where there are other processes using locking on the same file system (since the
courtesy lock would be a normal held lock on the backend - Ganesha can only give a
conflicting lock out and cancel the courtesy lock for locks that come through that Ganesha
instance).
Frank
-----Original Message-----
From: Daniel Gryniewicz [mailto:dang@redhat.com]
Sent: Wednesday, July 1, 2020 7:21 AM
To: devel(a)lists.nfs-ganesha.org
Subject: [NFS-Ganesha-Devel] Re: Callbacks supported with 4.1
It appears the implemented callbacks are layout recall, device notify, delegation
recall, and getattr. You can check the callpoints of
nfs_rpc_cb_single() to see which callbacks are sent.
Daniel
On 7/1/20 9:13 AM, Trishali Nayar wrote:
> Hi all,
>
> Recently while doing some testing we observed that CB_NOTIFY_LOCK
> callback does not seem to supported by Ganesha. Is that understanding
correct?
>
> Also, any insights on the 4.1 callbacks that we do support, would be
> good to know. The RFC mentions quite a few of them.
>
> Thanks and regards,
> Trishali.
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Trishali Nayar
> IBM Systems
> ETZ, Pune.
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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