From: "bfields@fieldses.org" <bfields@fieldses.org>
To: Trond Myklebust <trondmy@hammerspace.com>
Cc: "bfields@redhat.com" <bfields@redhat.com>,
"linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
"chuck.lever@oracle.com" <chuck.lever@oracle.com>
Subject: Re: [PATCH 1/6] nfsd: add a new EXPORT_OP_NOWCC flag to struct export_operations
Date: Mon, 30 Nov 2020 22:11:30 -0500 [thread overview]
Message-ID: <20201201031130.GD22446@fieldses.org> (raw)
In-Reply-To: <66f93208c6edf2dad70ee41c349c5130b30b8ed4.camel@hammerspace.com>
On Tue, Dec 01, 2020 at 03:06:46AM +0000, Trond Myklebust wrote:
> A local filesystem might choose to set the 'non-atomic' flag without
> wanting to turn off NFSv3 WCC attributes. Yes, the latter are assumed
> to be atomic, but a number of commercial servers do abuse that
> assumption in practice.
What do you mean by abusing that assumption?
I thought that leaving off the post-op attrs was the v3 protocol's way
of saying that it couldn't give you atomic wcc information.
--b.
next prev parent reply other threads:[~2020-12-01 3:12 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-30 21:24 [PATCH 0/6] Patches to support NFS re-exporting trondmy
2020-11-30 21:24 ` [PATCH 1/6] nfsd: add a new EXPORT_OP_NOWCC flag to struct export_operations trondmy
2020-11-30 21:24 ` [PATCH 2/6] nfsd: allow filesystems to opt out of subtree checking trondmy
2020-11-30 21:24 ` [PATCH 3/6] nfsd: close cached files prior to a REMOVE or RENAME that would replace target trondmy
2020-11-30 21:24 ` [PATCH 4/6] exportfs: Add a function to return the raw output from fh_to_dentry() trondmy
2020-11-30 21:24 ` [PATCH 5/6] nfsd: Fix up nfsd to ensure that timeout errors don't result in ESTALE trondmy
2020-11-30 21:24 ` [PATCH 6/6] nfsd: Set PF_LOCAL_THROTTLE on local filesystems only trondmy
2020-11-30 23:05 ` [PATCH 5/6] nfsd: Fix up nfsd to ensure that timeout errors don't result in ESTALE J. Bruce Fields
2020-12-01 0:39 ` Trond Myklebust
2020-12-01 2:30 ` J. Bruce Fields
2020-11-30 22:59 ` [PATCH 2/6] nfsd: allow filesystems to opt out of subtree checking J. Bruce Fields
2020-11-30 22:58 ` [PATCH 1/6] nfsd: add a new EXPORT_OP_NOWCC flag to struct export_operations J. Bruce Fields
2020-12-01 0:33 ` Trond Myklebust
2020-12-01 0:45 ` Trond Myklebust
2020-12-01 2:28 ` J. Bruce Fields
2020-12-01 3:06 ` Trond Myklebust
2020-12-01 3:11 ` bfields [this message]
2020-12-01 3:16 ` Trond Myklebust
2020-12-01 3:23 ` Trond Myklebust
2020-12-01 15:19 ` bfields
2020-12-01 15:50 ` Trond Myklebust
2020-12-01 15:06 ` J. Bruce Fields
2020-12-01 19:46 ` J. Bruce Fields
2020-11-30 23:11 ` Chuck Lever
2020-12-01 0:49 ` Trond Myklebust
2020-12-01 0:14 ` Jeff Layton
2020-11-30 21:40 ` [PATCH 0/6] Patches to support NFS re-exporting Chuck Lever
2020-11-30 21:51 ` Trond Myklebust
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