From: Richard Weinberger <richard@nod.at>
To: bfields <bfields@fieldses.org>
Cc: linux-nfs <linux-nfs@vger.kernel.org>,
david <david@sigma-star.at>,
luis turcitu <luis.turcitu@appsbroker.com>,
david young <david.young@appsbroker.com>,
david oberhollenzer <david.oberhollenzer@sigma-star.at>,
trond myklebust <trond.myklebust@hammerspace.com>,
anna schumaker <anna.schumaker@netapp.com>,
chris chilvers <chris.chilvers@appsbroker.com>
Subject: Re: [RFC PATCH 0/6] nfs-utils: Improving NFS re-exports
Date: Thu, 17 Feb 2022 21:29:39 +0100 (CET) [thread overview]
Message-ID: <2117074981.60920.1645129779132.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <20220217201805.GC16497@fieldses.org>
----- Ursprüngliche Mail -----
> Von: "bfields" <bfields@fieldses.org>
>> The reason why setting the timeout to 0 is still needed is because
>> when mountd uncovers a subvolume but no client uses it a filehandle,
>> it is not locked and can be unmounted later.
>> Only when nfsd sees a matching filehandle the reference counter will
>> be increased and umounting is no longer possible.
>
> I understand that. But, then if a client comes in with a matching
> filehandle, mountd should be able to look up the filesystem and trigger
> a new mount, right?
This does not match what I saw in my experiments. The handle machted only
when the subvolume was mounted before.
But I understand now your point, in theory it should work.
I'll investigate into this.
Thanks,
//richard
next prev parent reply other threads:[~2022-02-17 20:29 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 13:15 [RFC PATCH 0/6] nfs-utils: Improving NFS re-exports Richard Weinberger
2022-02-17 13:15 ` [RFC PATCH 1/6] Implement reexport helper library Richard Weinberger
2022-03-08 21:44 ` J. Bruce Fields
2022-03-09 9:43 ` Richard Weinberger
2022-03-09 14:19 ` bfields
2022-03-09 15:02 ` Richard Weinberger
2022-03-09 15:28 ` bfields
2022-02-17 13:15 ` [RFC PATCH 2/6] exports: Implement new export option reexport= Richard Weinberger
2022-03-08 22:10 ` J. Bruce Fields
2022-03-09 9:43 ` Richard Weinberger
2022-02-17 13:15 ` [RFC PATCH 3/6] export: Implement logic behind reexport= Richard Weinberger
2022-02-17 13:15 ` [RFC PATCH 4/6] export: Record mounted volumes Richard Weinberger
2022-02-17 13:15 ` [RFC PATCH 5/6] nfsd: statfs() every known subvolume upon start Richard Weinberger
2022-02-17 13:15 ` [RFC PATCH 6/6] export: Garbage collect orphaned subvolumes " Richard Weinberger
2022-02-17 16:33 ` [RFC PATCH 0/6] nfs-utils: Improving NFS re-exports J. Bruce Fields
2022-02-17 17:27 ` Richard Weinberger
2022-02-17 19:27 ` bfields
2022-02-17 20:15 ` Richard Weinberger
2022-02-17 20:18 ` bfields
2022-02-17 20:29 ` Richard Weinberger [this message]
2022-03-07 9:25 ` Richard Weinberger
2022-03-07 22:29 ` bfields
2022-04-19 20:20 ` Steve Dickson
2022-04-19 20:31 ` Richard Weinberger
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